Explicit Grid Boundary Conditions - Revision history

Nairnj at 18:40, 20 September 2017

2017-09-20T18:40:26Z

← Older revision		Revision as of 18:40, 20 September 2017
Line 14:		Line 14:
	* <tt>dof</tt> determines if the x direction ((dir)=1), the y direction ((dir)=2), the z direction ((dir)=3), the R direction when axisymetric ((dir)=1), or the Z direction when axisymmetric ((dir)=2) will have the specified velocity. You can also set velocity in a direction that is not along an axis. For details see help on [[Setting Velocity and Transport Values#Skewed Velocity Conditions\|skewed velocity conditions]], which modifies the <tt>dof</tt> attribute and adds <tt>angle</tt> and <tt>angle2</tt> attibutes to define the [[Setting Velocity and Transport Values#Skewed Velocity Conditions\|skew angle]].		* <tt>dof</tt> determines if the x direction ((dir)=1), the y direction ((dir)=2), the z direction ((dir)=3), the R direction when axisymetric ((dir)=1), or the Z direction when axisymmetric ((dir)=2) will have the specified velocity. You can also set velocity in a direction that is not along an axis. For details see help on [[Setting Velocity and Transport Values#Skewed Velocity Conditions\|skewed velocity conditions]], which modifies the <tt>dof</tt> attribute and adds <tt>angle</tt> and <tt>angle2</tt> attibutes to define the [[Setting Velocity and Transport Values#Skewed Velocity Conditions\|skew angle]].
	* <tt>(style)</tt> specifies the [[Boundary Condition Styles\|style of the applied velocity]]. Each velocity depends on two parameters specified by arguments (velocity) and (time). If either argument is not supplied, they are set to zero. The standard units are [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]] for (velocity) and [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]] for (time) (but the units may change depending on the [[Boundary Condition Styles\|<tt>(style)</tt> setting]]). When using an arbitrary function (see [[Boundary Condition Styles\|<tt>(style)</tt>=6]]) the<tt>(velocity)</tt> text should be the a user-defined function of t (in [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]]) that evaluates to velocity in [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. If this attribute is omitted, it is assumed to be 1 (or a constant velocity).		* <tt>(style)</tt> specifies the [[Boundary Condition Styles\|style of the applied velocity]]. Each velocity depends on two parameters specified by arguments (velocity) and (time). If either argument is not supplied, they are set to zero. The standard units are [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]] for (velocity) and [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]] for (time) (but the units may change depending on the [[Boundary Condition Styles\|<tt>(style)</tt> setting]]). When using an arbitrary function (see [[Boundary Condition Styles\|<tt>(style)</tt>=6]]) the<tt>(velocity)</tt> text should be the a user-defined function of t (in [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]]) that evaluates to velocity in [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. If this attribute is omitted, it is assumed to be 1 (or a constant velocity).
	* (id) - this attribute specifies and ID for the boundary condition.		* <tt>(id)</tt> - this attribute specifies and ID for the boundary condition.

Nairnj at 18:40, 20 September 2017

2017-09-20T18:40:03Z

← Older revision		Revision as of 18:40, 20 September 2017
Line 12:		Line 12:
	where the text of the <tt><fix></tt> tag (i.e., <tt>(velocity)</tt>) is the value of the fixed velocity in [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. The attributes of the <tt><fix></tt> element are:		where the text of the <tt><fix></tt> tag (i.e., <tt>(velocity)</tt>) is the value of the fixed velocity in [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. The attributes of the <tt><fix></tt> element are:

	* <tt>dof</tt> determines if the x direction ((dir)=1), the y direction ((dir)=2), the z direction ((dir)=3), the R direction when axisymetric ((dir)=1), or the Z direction when axisymmetric ((dir)=2) will have the specified velocity. You can also set velocity in a direction that is not along an axis. For details see help on [[Setting Velocity~~, Temperature,~~ and ~~Concentration~~#Skewed Velocity Conditions\|skewed velocity conditions]], which modifies the <tt>dof</tt> attribute and adds <tt>angle</tt> and <tt>angle2</tt> attibutes to define the [[Setting Velocity~~, Temperature,~~ and ~~Concentration~~#Skewed Velocity Conditions\|skew angle]].		* <tt>dof</tt> determines if the x direction ((dir)=1), the y direction ((dir)=2), the z direction ((dir)=3), the R direction when axisymetric ((dir)=1), or the Z direction when axisymmetric ((dir)=2) will have the specified velocity. You can also set velocity in a direction that is not along an axis. For details see help on [[Setting Velocity and Transport Values#Skewed Velocity Conditions\|skewed velocity conditions]], which modifies the <tt>dof</tt> attribute and adds <tt>angle</tt> and <tt>angle2</tt> attibutes to define the [[Setting Velocity and Transport Values#Skewed Velocity Conditions\|skew angle]].
	* <tt>(style)</tt> specifies the [[Boundary Condition Styles\|style of the applied velocity]]. Each velocity depends on two parameters specified by arguments (velocity) and (time). If either argument is not supplied, they are set to zero. The standard units are [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]] for (velocity) and [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]] for (time) (but the units may change depending on the [[Boundary Condition Styles\|<tt>(style)</tt> setting]]). When using an arbitrary function (see [[Boundary Condition Styles\|<tt>(style)</tt>=6]]) the<tt>(velocity)</tt> text should be the a user-defined function of t (in [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]]) that evaluates to velocity in [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. If this attribute is omitted, it is assumed to be 1 (or a constant velocity).		* <tt>(style)</tt> specifies the [[Boundary Condition Styles\|style of the applied velocity]]. Each velocity depends on two parameters specified by arguments (velocity) and (time). If either argument is not supplied, they are set to zero. The standard units are [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]] for (velocity) and [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]] for (time) (but the units may change depending on the [[Boundary Condition Styles\|<tt>(style)</tt> setting]]). When using an arbitrary function (see [[Boundary Condition Styles\|<tt>(style)</tt>=6]]) the<tt>(velocity)</tt> text should be the a user-defined function of t (in [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]]) that evaluates to velocity in [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. If this attribute is omitted, it is assumed to be 1 (or a constant velocity).
	* (id) - this attribute specifies and ID for the boundary condition.		* (id) - this attribute specifies and ID for the boundary condition.

Nairnj: /* Explicit Velocity Conditions */

2017-04-08T18:46:38Z

Explicit Velocity Conditions

← Older revision		Revision as of 18:46, 8 April 2017
Line 13:		Line 13:

	* <tt>dof</tt> determines if the x direction ((dir)=1), the y direction ((dir)=2), the z direction ((dir)=3), the R direction when axisymetric ((dir)=1), or the Z direction when axisymmetric ((dir)=2) will have the specified velocity. You can also set velocity in a direction that is not along an axis. For details see help on [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skewed velocity conditions]], which modifies the <tt>dof</tt> attribute and adds <tt>angle</tt> and <tt>angle2</tt> attibutes to define the [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skew angle]].		* <tt>dof</tt> determines if the x direction ((dir)=1), the y direction ((dir)=2), the z direction ((dir)=3), the R direction when axisymetric ((dir)=1), or the Z direction when axisymmetric ((dir)=2) will have the specified velocity. You can also set velocity in a direction that is not along an axis. For details see help on [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skewed velocity conditions]], which modifies the <tt>dof</tt> attribute and adds <tt>angle</tt> and <tt>angle2</tt> attibutes to define the [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skew angle]].
	* <tt>(style)</tt> specifies the [[Boundary Condition Styles\|style of the applied velocity]]. Each velocity depends on two parameters specified by arguments (velocity) and (time). If either argument is not supplied, they are set to zero. The standard units are [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]] for (velocity) and [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]] for (time) (but the units may change depending on the [[Boundary Condition Styles\|<tt>(style)</tt> setting]]). When using an arbitrary function (see [[~~Setting Velocity, Temperature, and Concentration#~~Boundary Condition Styles\|<tt>(style)</tt>=6]]) the<tt>(velocity)</tt> text should be the a user-defined function of t (in [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]]) that evaluates to velocity in [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. If this attribute is omitted, it is assumed to be 1 (or a constant velocity).		* <tt>(style)</tt> specifies the [[Boundary Condition Styles\|style of the applied velocity]]. Each velocity depends on two parameters specified by arguments (velocity) and (time). If either argument is not supplied, they are set to zero. The standard units are [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]] for (velocity) and [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]] for (time) (but the units may change depending on the [[Boundary Condition Styles\|<tt>(style)</tt> setting]]). When using an arbitrary function (see [[Boundary Condition Styles\|<tt>(style)</tt>=6]]) the<tt>(velocity)</tt> text should be the a user-defined function of t (in [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]]) that evaluates to velocity in [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. If this attribute is omitted, it is assumed to be 1 (or a constant velocity).
	* (id) - this attribute specifies and ID for the boundary condition.		* (id) - this attribute specifies and ID for the boundary condition.

Nairnj: /* Explicit Velocity Conditions */

2017-04-08T18:46:20Z

Explicit Velocity Conditions

← Older revision		Revision as of 18:46, 8 April 2017
Line 13:		Line 13:

	* <tt>dof</tt> determines if the x direction ((dir)=1), the y direction ((dir)=2), the z direction ((dir)=3), the R direction when axisymetric ((dir)=1), or the Z direction when axisymmetric ((dir)=2) will have the specified velocity. You can also set velocity in a direction that is not along an axis. For details see help on [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skewed velocity conditions]], which modifies the <tt>dof</tt> attribute and adds <tt>angle</tt> and <tt>angle2</tt> attibutes to define the [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skew angle]].		* <tt>dof</tt> determines if the x direction ((dir)=1), the y direction ((dir)=2), the z direction ((dir)=3), the R direction when axisymetric ((dir)=1), or the Z direction when axisymmetric ((dir)=2) will have the specified velocity. You can also set velocity in a direction that is not along an axis. For details see help on [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skewed velocity conditions]], which modifies the <tt>dof</tt> attribute and adds <tt>angle</tt> and <tt>angle2</tt> attibutes to define the [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skew angle]].
	* <tt>(style)</tt> specifies the [[Boundary Condition Styles\|style of the applied velocity]]. Each velocity depends on two parameters specified by arguments (velocity) and (time). If either argument is not supplied, they are set to zero. The standard units are [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]] for (velocity) and [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]] for (time) (but the units may change depending on the [[~~Setting Velocity, Temperature, and Concentration#~~Boundary Condition Styles\|<tt>(style)</tt> setting]]). When using an arbitrary function (see [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt>=6]]) the<tt>(velocity)</tt> text should be the a user-defined function of t (in [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]]) that evaluates to velocity in [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. If this attribute is omitted, it is assumed to be 1 (or a constant velocity).		* <tt>(style)</tt> specifies the [[Boundary Condition Styles\|style of the applied velocity]]. Each velocity depends on two parameters specified by arguments (velocity) and (time). If either argument is not supplied, they are set to zero. The standard units are [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]] for (velocity) and [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]] for (time) (but the units may change depending on the [[Boundary Condition Styles\|<tt>(style)</tt> setting]]). When using an arbitrary function (see [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt>=6]]) the<tt>(velocity)</tt> text should be the a user-defined function of t (in [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]]) that evaluates to velocity in [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. If this attribute is omitted, it is assumed to be 1 (or a constant velocity).
	* (id) - this attribute specifies and ID for the boundary condition.		* (id) - this attribute specifies and ID for the boundary condition.

Nairnj: /* Explicit Velocity Conditions */

2017-04-08T18:45:57Z

Explicit Velocity Conditions

← Older revision		Revision as of 18:45, 8 April 2017
Line 13:		Line 13:

	* <tt>dof</tt> determines if the x direction ((dir)=1), the y direction ((dir)=2), the z direction ((dir)=3), the R direction when axisymetric ((dir)=1), or the Z direction when axisymmetric ((dir)=2) will have the specified velocity. You can also set velocity in a direction that is not along an axis. For details see help on [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skewed velocity conditions]], which modifies the <tt>dof</tt> attribute and adds <tt>angle</tt> and <tt>angle2</tt> attibutes to define the [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skew angle]].		* <tt>dof</tt> determines if the x direction ((dir)=1), the y direction ((dir)=2), the z direction ((dir)=3), the R direction when axisymetric ((dir)=1), or the Z direction when axisymmetric ((dir)=2) will have the specified velocity. You can also set velocity in a direction that is not along an axis. For details see help on [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skewed velocity conditions]], which modifies the <tt>dof</tt> attribute and adds <tt>angle</tt> and <tt>angle2</tt> attibutes to define the [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skew angle]].
	* <tt>(style)</tt> specifies the [[~~Setting Velocity, Temperature, and Concentration#~~Boundary Condition Styles\|style of the applied velocity]]. Each velocity depends on two parameters specified by arguments (velocity) and (time). If either argument is not supplied, they are set to zero. The standard units are [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]] for (velocity) and [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]] for (time) (but the units may change depending on the [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt> setting]]). When using an arbitrary function (see [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt>=6]]) the<tt>(velocity)</tt> text should be the a user-defined function of t (in [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]]) that evaluates to velocity in [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. If this attribute is omitted, it is assumed to be 1 (or a constant velocity).		* <tt>(style)</tt> specifies the [[Boundary Condition Styles\|style of the applied velocity]]. Each velocity depends on two parameters specified by arguments (velocity) and (time). If either argument is not supplied, they are set to zero. The standard units are [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]] for (velocity) and [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]] for (time) (but the units may change depending on the [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt> setting]]). When using an arbitrary function (see [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt>=6]]) the<tt>(velocity)</tt> text should be the a user-defined function of t (in [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]]) that evaluates to velocity in [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. If this attribute is omitted, it is assumed to be 1 (or a constant velocity).
	* (id) - this attribute specifies and ID for the boundary condition.		* (id) - this attribute specifies and ID for the boundary condition.

Nairnj: /* Introduction */

2017-04-08T17:59:43Z

Introduction

← Older revision		Revision as of 17:59, 8 April 2017
Line 2:		Line 2:
	== Introduction ==		== Introduction ==

	If needed, velocity boundary conditions can be explicitly assigned to numbered nodes by using <tt><fix></tt> elements within the single <tt><DisplacementBCs></tt> element. This approach can only be used in <tt>XML</tt> input files and is rarely used, except perhaps in separate software or scripts that create an <tt>XML</tt> input file automatically. The more common way to ~~create~~ [[Grid-Based Boundary Conditions\|boundary conditions on nodes]] ~~is to use [[Grid BC Shape Commands\|shape commands]]~~.		If needed, velocity boundary conditions can be explicitly assigned to numbered nodes by using <tt><fix></tt> elements within the single <tt><DisplacementBCs></tt> element. This approach can only be used in <tt>XML</tt> input files and is rarely used, except perhaps in separate software or scripts that create an <tt>XML</tt> input file automatically. The more common way it to assign [[Grid-Based Boundary Conditions\|boundary conditions to block of nodes]] suing shapes.

	== Explicit Velocity Conditions ==		== Explicit Velocity Conditions ==

Nairnj at 23:52, 2 June 2015

2015-06-02T23:52:39Z

← Older revision		Revision as of 23:52, 2 June 2015
Line 10:		Line 10:
	<fix node='(node)' dof='(dir)' style='(style)' time='(time)' id='(id)'>(velocity)</fix>		<fix node='(node)' dof='(dir)' style='(style)' time='(time)' id='(id)'>(velocity)</fix>

	where the text of the <tt><fix></tt> tag (i.e., <tt>(velocity)</tt>) is the value of the fixed velocity ~~with standard units of~~ [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. The attributes of the <tt><fix></tt> element are:		where the text of the <tt><fix></tt> tag (i.e., <tt>(velocity)</tt>) is the value of the fixed velocity in [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. The attributes of the <tt><fix></tt> element are:

	* <tt>dof</tt> determines if the x direction ((dir)=1), the y direction ((dir)=2), the z direction ((dir)=3), the R direction when axisymetric ((dir)=1), or the Z direction when axisymmetric ((dir)=2) will have the specified velocity. You can also set velocity in a direction that is not along an axis. For details see help on [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skewed velocity conditions]], which modifies the <tt>dof</tt> attribute and adds <tt>angle</tt> and <tt>angle2</tt> attibutes to define the [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skew angle]].		* <tt>dof</tt> determines if the x direction ((dir)=1), the y direction ((dir)=2), the z direction ((dir)=3), the R direction when axisymetric ((dir)=1), or the Z direction when axisymmetric ((dir)=2) will have the specified velocity. You can also set velocity in a direction that is not along an axis. For details see help on [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skewed velocity conditions]], which modifies the <tt>dof</tt> attribute and adds <tt>angle</tt> and <tt>angle2</tt> attibutes to define the [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skew angle]].
	* <tt>(style)</tt> specifies the [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|style of the applied velocity]]. Each velocity depends on two parameters specified by arguments (velocity) and (time). If either argument is not supplied, they are set to zero. The standard units are [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]] for (velocity) and [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]] for (time) (but the units may change depending on the [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt> setting]]). When using an arbitrary function (see [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt>=6]]) the<tt>(velocity)</tt> text should be the a user-defined function of t (in [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]]) that evaluates to velocity in [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. If this attribute is omitted, it is assumed to be 1 (or a constant velocity).		* <tt>(style)</tt> specifies the [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|style of the applied velocity]]. Each velocity depends on two parameters specified by arguments (velocity) and (time). If either argument is not supplied, they are set to zero. The standard units are [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]] for (velocity) and [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]] for (time) (but the units may change depending on the [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt> setting]]). When using an arbitrary function (see [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt>=6]]) the<tt>(velocity)</tt> text should be the a user-defined function of t (in [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]]) that evaluates to velocity in [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. If this attribute is omitted, it is assumed to be 1 (or a constant velocity).
	* (id) - this attribute specifies and ID for the boundary condition.		* (id) - this attribute specifies and ID for the boundary condition.

Nairnj at 22:13, 2 June 2015

2015-06-02T22:13:01Z

← Older revision		Revision as of 22:13, 2 June 2015
Line 13:		Line 13:

	* <tt>dof</tt> determines if the x direction ((dir)=1), the y direction ((dir)=2), the z direction ((dir)=3), the R direction when axisymetric ((dir)=1), or the Z direction when axisymmetric ((dir)=2) will have the specified velocity. You can also set velocity in a direction that is not along an axis. For details see help on [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skewed velocity conditions]], which modifies the <tt>dof</tt> attribute and adds <tt>angle</tt> and <tt>angle2</tt> attibutes to define the [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skew angle]].		* <tt>dof</tt> determines if the x direction ((dir)=1), the y direction ((dir)=2), the z direction ((dir)=3), the R direction when axisymetric ((dir)=1), or the Z direction when axisymmetric ((dir)=2) will have the specified velocity. You can also set velocity in a direction that is not along an axis. For details see help on [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skewed velocity conditions]], which modifies the <tt>dof</tt> attribute and adds <tt>angle</tt> and <tt>angle2</tt> attibutes to define the [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skew angle]].
	* <tt>(style)</tt> specifies the [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|style of the applied velocity]]. Each velocity depends on two parameters specified by arguments (velocity) and (time). If either argument is not supplied, they are set to zero. The standard units are [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]] for (velocity) and [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]] for (time) (but the units may change depending on the [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt> setting]]). When using an arbitrary function (see [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt>=6]]) the<tt>(velocity)</tt> text should be the a user-defined function of t (in ms) that evaluates to velocity in [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. If this attribute is omitted, it is assumed to be 1 (or a constant velocity).		* <tt>(style)</tt> specifies the [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|style of the applied velocity]]. Each velocity depends on two parameters specified by arguments (velocity) and (time). If either argument is not supplied, they are set to zero. The standard units are [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]] for (velocity) and [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]] for (time) (but the units may change depending on the [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt> setting]]). When using an arbitrary function (see [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt>=6]]) the<tt>(velocity)</tt> text should be the a user-defined function of t (in [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]]) that evaluates to velocity in [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. If this attribute is omitted, it is assumed to be 1 (or a constant velocity).
	* (id) - this attribute specifies and ID for the boundary condition.		* (id) - this attribute specifies and ID for the boundary condition.

Nairnj at 21:42, 2 June 2015

2015-06-02T21:42:09Z

← Older revision		Revision as of 21:42, 2 June 2015
Line 10:		Line 10:
	<fix node='(node)' dof='(dir)' style='(style)' time='(time)' id='(id)'>(velocity)</fix>		<fix node='(node)' dof='(dir)' style='(style)' time='(time)' id='(id)'>(velocity)</fix>

	where the text of the <tt><fix></tt> tag (i.e., <tt>(velocity)</tt>) is the value of the fixed velocity with standard units of ~~mm/sec~~. The attributes of the <tt><fix></tt> element are:		where the text of the <tt><fix></tt> tag (i.e., <tt>(velocity)</tt>) is the value of the fixed velocity with standard units of [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. The attributes of the <tt><fix></tt> element are:

	* <tt>dof</tt> determines if the x direction ((dir)=1), the y direction ((dir)=2), the z direction ((dir)=3), the R direction when axisymetric ((dir)=1), or the Z direction when axisymmetric ((dir)=2) will have the specified velocity. You can also set velocity in a direction that is not along an axis. For details see help on [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skewed velocity conditions]], which modifies the <tt>dof</tt> attribute and adds <tt>angle</tt> and <tt>angle2</tt> attibutes to define the [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skew angle]].		* <tt>dof</tt> determines if the x direction ((dir)=1), the y direction ((dir)=2), the z direction ((dir)=3), the R direction when axisymetric ((dir)=1), or the Z direction when axisymmetric ((dir)=2) will have the specified velocity. You can also set velocity in a direction that is not along an axis. For details see help on [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skewed velocity conditions]], which modifies the <tt>dof</tt> attribute and adds <tt>angle</tt> and <tt>angle2</tt> attibutes to define the [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skew angle]].
	* <tt>(style)</tt> specifies the [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|style of the applied velocity]]. Each velocity depends on two parameters specified by arguments (velocity) and (time). If either argument is not supplied, they are set to zero. The standard units are ~~mm/s~~ for (velocity) and ms for (time) (but the units may change depending on the [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt> setting]]). When using an arbitrary function (see [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt>=6]]) the<tt>(velocity)</tt> text should be the a user-defined function of t (in ms) that evaluates to velocity in ~~mm/s~~. If this attribute is omitted, it is assumed to be 1 (or a constant velocity).		* <tt>(style)</tt> specifies the [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|style of the applied velocity]]. Each velocity depends on two parameters specified by arguments (velocity) and (time). If either argument is not supplied, they are set to zero. The standard units are [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]] for (velocity) and [[ConsistentUnits Command#Legacy and Consistent Units\|alt time units]] for (time) (but the units may change depending on the [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt> setting]]). When using an arbitrary function (see [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt>=6]]) the<tt>(velocity)</tt> text should be the a user-defined function of t (in ms) that evaluates to velocity in [[ConsistentUnits Command#Legacy and Consistent Units\|velocity units]]. If this attribute is omitted, it is assumed to be 1 (or a constant velocity).
	* (id) - this attribute specifies and ID for the boundary condition.		* (id) - this attribute specifies and ID for the boundary condition.

Nairnj: /* Explicit Velocity Conditions */

2013-12-24T20:58:06Z

Explicit Velocity Conditions

← Older revision		Revision as of 20:58, 24 December 2013
Line 13:		Line 13:

	* <tt>dof</tt> determines if the x direction ((dir)=1), the y direction ((dir)=2), the z direction ((dir)=3), the R direction when axisymetric ((dir)=1), or the Z direction when axisymmetric ((dir)=2) will have the specified velocity. You can also set velocity in a direction that is not along an axis. For details see help on [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skewed velocity conditions]], which modifies the <tt>dof</tt> attribute and adds <tt>angle</tt> and <tt>angle2</tt> attibutes to define the [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skew angle]].		* <tt>dof</tt> determines if the x direction ((dir)=1), the y direction ((dir)=2), the z direction ((dir)=3), the R direction when axisymetric ((dir)=1), or the Z direction when axisymmetric ((dir)=2) will have the specified velocity. You can also set velocity in a direction that is not along an axis. For details see help on [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skewed velocity conditions]], which modifies the <tt>dof</tt> attribute and adds <tt>angle</tt> and <tt>angle2</tt> attibutes to define the [[Setting Velocity, Temperature, and Concentration#Skewed Velocity Conditions\|skew angle]].
	* <tt>(style)</tt> specifies the [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|style of the applied velocity]]. Each velocity depends on two parameters specified by arguments (velocity) and (time). If either argument is not supplied, they are set to zero~~. The styles are described below~~. The standard units are mm/s for (velocity) and ms for (time) (but the units may change depending on the (style) setting). When using an arbitrary function (see (style)=6) the<tt>(velocity)</tt> text should be the a user-defined function of t (in ms) that evaluates to velocity in mm/s. If this attribute is omitted, it is assumed to be 1.		* <tt>(style)</tt> specifies the [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|style of the applied velocity]]. Each velocity depends on two parameters specified by arguments (velocity) and (time). If either argument is not supplied, they are set to zero. The standard units are mm/s for (velocity) and ms for (time) (but the units may change depending on the [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt> setting]]). When using an arbitrary function (see [[Setting Velocity, Temperature, and Concentration#Boundary Condition Styles\|<tt>(style)</tt>=6]]) the<tt>(velocity)</tt> text should be the a user-defined function of t (in ms) that evaluates to velocity in mm/s. If this attribute is omitted, it is assumed to be 1 (or a constant velocity).
	* (id) - this attribute specifies and ID for the boundary condition.		* (id) - this attribute specifies and ID for the boundary condition.