Creating geom.spj - Revision history

Jrwrigh at 23:07, 13 July 2020

2020-07-13T23:07:15Z

Nmati at 20:42, 24 July 2013

2013-07-24T20:42:34Z

Jema6380 at 17:47, 15 July 2013

2013-07-15T17:47:54Z

Jema6380 at 17:44, 15 July 2013

2013-07-15T17:44:36Z

Jema6380 at 17:41, 15 July 2013

2013-07-15T17:41:22Z

Jema6380 at 17:31, 15 July 2013

2013-07-15T17:31:18Z

Jema6380 at 17:27, 15 July 2013

2013-07-15T17:27:11Z

Jema6380 at 17:26, 15 July 2013

2013-07-15T17:26:30Z

Jema6380 at 17:25, 15 July 2013

2013-07-15T17:25:31Z

Jema6380 at 17:24, 15 July 2013

2013-07-15T17:24:59Z

← Older revision		Revision as of 23:07, 13 July 2020
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	=== Creating geom.spj ===		=== Creating geom.spj ===
	*When all the attributes are completed, save the smf file one last time. At the top menu, to the right of "Meshing Process", click on Attributes -> Export Attributes. Save it in the same place as geom.smf and save it as geom.spj.		*When all the attributes are completed, save the smf file one last time. At the top menu, to the right of "Meshing Process", click on Attributes -> Export Attributes. Save it in the same place as geom.smf and save it as geom.spj.
		+
		+	[[Category:Chef]]

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-*create a directory for the smf and spj files (mkdir SMF_and_SPJ_files). cd to that directory and start SimulationMaker:
+*create a directory for the .smf and .spj files (mkdir SMF_and_SPJ_files), cd to that directory and start SimulationMaker. There are a number of versions of simulation maker available. One of the oldest is 090321 which can be run with
    vglrun /usr/local/simapps/sdk-090321/simapps  SimulationMaker
-*Default Solver: Phasta
+At the time of writing, this version is commonly used, but very deprecated. Instead, try to use just about any other version we have, e.g.
-*Browse to the appropriate geometry file and select it (make sure it is not the SpaceClaim parasolid file; it should be the file you saved from ThreeDViewer - geom.xmt_txt)
+  soft add +simappssdk-7.2-120125
-*Turn OFF sliver feature supression
+  simapps SimulationMaker
-*Click Define Simulation Model Instance
+*In the GUI which comes up
 *The attribute list and model will appear in split windows. At the top of the list, double click on the name "problem definition" and set the name to "geom".
 *To set attributes, make sure the field with "geom", which you just changed, is selected. Using the model to the right, click on whichever faces you want to give attributes, and go to "Create" at the upper left hand corner to select the appropriate attribute.
@@ Line 16: / Line 20: @@
 comp3: The name is arbitrary but should be set to something meaningful (i.e. Inflow). Click on the inflow face (which is the face which makes up the front of the wind tunnel) and go to Create -> comp3. Set vector magnitude to the free-stream velocity you want. Set the vector direction to the direction (i.e. if the free-stream velocity moves strictly along the x-axis, the direction would be [1 0 0]). Even if the vector magnitude is 0, '''the direction CANNOT be [0 0 0]'''. This will cause Phasta to crash. It must have at least one non-zero component. In this case, just set it to [1 0 0].
-scalar_1: Click on the inflow face and go to Create -> scalar_1. Set the field "Type: scalar_1" to 1.8e-7. This is the eddy viscosity at the inlet.
+scalar_1: Click on the inflow face and go to Create -> scalar_1. Set the field "Type: scalar_1" to 1.8e-7. This is the eddy viscosity at the inlet. (Debated: Spalart Almaras EV BCs typically use a value on the order of molecular viscosity which, in turn, is typically approximately 1.8e-5 for air at room temperature)
 === Outflow ===
 natural pressure: Set "Type: natural pressure" to 0.

@@ Line 48: / Line 48: @@
 === No-Slip Walls ===
-comp3: Set the no-slip walls with comp3. The name should be something meaningful (i.e. NoSlip_comp3). For Boeing, the the only walls that do not get no-slip are the tunnel walls. Therefore, what you should do is go to Selection -> "Select All Model Faces" and then create a comp3. The vector magnitude is 0, and the '''direction must be non-zero''' (i.e. [1 0 0]). Click Apply and Close. Re-open that attribute, find each of the 6 tunnel walls and click on "Model Associations" at the top of the Attribute Editor and delete them. The faces should be in numerical order in the list. Apply and Close.
+comp3: Set the no-slip walls with comp3. The name should be something meaningful (i.e. NoSlip_comp3). For Boeing, the the only walls that do not get no-slip are the tunnel walls. Therefore, what you should do is go to Selection -> "Select All Model Faces" and then create a comp3. The vector magnitude is 0, and the '''direction must be non-zero''' (i.e. [1 0 0] is fine but [0 0 0] is not). Click Apply and Close. Re-open that attribute, find each of the 6 tunnel walls and click on "Model Associations" at the top of the Attribute Editor and delete them. The faces should be in numerical order in the list. Apply and Close.
 === Setting Eddy Viscosity on the Wall ===

← Older revision		Revision as of 17:44, 15 July 2013
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	*This also must be done in order for phasta to compute the aerodynamic force for sets of surfaces. If you want to know C_L for the rudder and stabilizer for example, give all the stabilizer surfaces an ID of 13, and all the rudder surfaces an ID of 14. The value of the ID is arbitrary, but must be different from other surf ID's.		*This also must be done in order for phasta to compute the aerodynamic force for sets of surfaces. If you want to know C_L for the rudder and stabilizer for example, give all the stabilizer surfaces an ID of 13, and all the rudder surfaces an ID of 14. The value of the ID is arbitrary, but must be different from other surf ID's.
		+
		+	=== Creating geom.spj ===
		+	*When all the attributes are completed, save the smf file one last time. At the top menu, to the right of "Meshing Process", click on Attributes -> Export Attributes. Save it in the same place as geom.smf and save it as geom.spj.

← Older revision		Revision as of 17:41, 15 July 2013
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	comp3: Set the no-slip walls with comp3. The name should be something meaningful (i.e. NoSlip_comp3). For Boeing, the the only walls that do not get no-slip are the tunnel walls. Therefore, what you should do is go to Selection -> "Select All Model Faces" and then create a comp3. The vector magnitude is 0, and the '''direction must be non-zero''' (i.e. [1 0 0]). Click Apply and Close. Re-open that attribute, find each of the 6 tunnel walls and click on "Model Associations" at the top of the Attribute Editor and delete them. The faces should be in numerical order in the list. Apply and Close.		comp3: Set the no-slip walls with comp3. The name should be something meaningful (i.e. NoSlip_comp3). For Boeing, the the only walls that do not get no-slip are the tunnel walls. Therefore, what you should do is go to Selection -> "Select All Model Faces" and then create a comp3. The vector magnitude is 0, and the '''direction must be non-zero''' (i.e. [1 0 0]). Click Apply and Close. Re-open that attribute, find each of the 6 tunnel walls and click on "Model Associations" at the top of the Attribute Editor and delete them. The faces should be in numerical order in the list. Apply and Close.

		+	=== Setting Eddy Viscosity on the Wall ===
	scalar_1: For the Boeing model, the only walls that don't get this attribute are the tunnel walls. Set this attribute to 0.		scalar_1: For the Boeing model, the only walls that don't get this attribute are the tunnel walls. Set this attribute to 0.
		+
		+	=== Computing Distance to the Wall for the Turbulence Model ===
		+	turbulence wall: For the Boeing model, the only faces that do not receive this attribute are the tunnel walls '''and the jet diaphragms'''.
		+
		+	=== Identifying Specific Surfaces with an ID Number===
		+	*This must be done for the jet diaphragms in order to turn them on and off. The jets are traditionally ordered from tip to root. So if there are 12 jets, label the jet closest to the tip 1, and the jet closest to the root 12. Click on the surface, go to Create -> Surf ID. Set the value of the ID in Type: Surf ID.
		+
		+	*This also must be done in order for phasta to compute the aerodynamic force for sets of surfaces. If you want to know C_L for the rudder and stabilizer for example, give all the stabilizer surfaces an ID of 13, and all the rudder surfaces an ID of 14. The value of the ID is arbitrary, but must be different from other surf ID's.

← Older revision		Revision as of 17:31, 15 July 2013
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	=== No-Slip Walls ===		=== No-Slip Walls ===
−	comp3: Set the no-slip walls with comp3. For Boeing, the the only walls that do not get no-slip are the tunnel walls. Therefore, what you should do is go to Selection -> "Select All Model Faces" and then create a comp3. The vector magnitude is 0, and the '''direction must be non-zero''' (i.e. [1 0 0]). Click Apply and Close. Re-open that attribute, find each of the 6 tunnel walls and click on "Model Associations" at the top and delete them. The faces should be in numerical order in the list. Apply and Close.	+	comp3: Set the no-slip walls with comp3. The name should be something meaningful (i.e. NoSlip_comp3). For Boeing, the the only walls that do not get no-slip are the tunnel walls. Therefore, what you should do is go to Selection -> "Select All Model Faces" and then create a comp3. The vector magnitude is 0, and the '''direction must be non-zero''' (i.e. [1 0 0]). Click Apply and Close. Re-open that attribute, find each of the 6 tunnel walls and click on "Model Associations" at the top of the Attribute Editor and delete them. The faces should be in numerical order in the list. Apply and Close.
		+
		+	scalar_1: For the Boeing model, the only walls that don't get this attribute are the tunnel walls. Set this attribute to 0.

@@ Line 9: / Line 9: @@
 *To set attributes, make sure the field with "geom", which you just changed, is selected. Using the model to the right, click on whichever faces you want to give attributes, and go to "Create" at the upper left hand corner to select the appropriate attribute.
 *The names of the attributes are arbitrary, but should be something meaningful to the user and whoever else is involved in the project.
-*'''Make sure you save the smf file very frequently so that you don't lose your work'''
+*'''Make sure you save the smf file very frequently so that you don't lose your work'''. Do File -> Save.
 ==For Incompressible Flow==

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 Initial Scalar_1: Set to 1.8e-7
-=== NoSlip Walls ===
+=== No-Slip Walls ===
 comp3: Set the no-slip walls with comp3. For Boeing, the the only walls that do not get no-slip are the tunnel walls. Therefore, what you should do is go to Selection -> "Select All Model Faces" and then create a comp3. The vector magnitude is 0, and the '''direction must be non-zero''' (i.e. [1 0 0]). Click Apply and Close. Re-open that attribute, find each of the 6 tunnel walls and click on "Model Associations" at the top and delete them. The faces should be in numerical order in the list. Apply and Close.

← Older revision		Revision as of 17:24, 15 July 2013
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	=== NoSlip Walls ===		=== NoSlip Walls ===
−	comp3: Set the no-slip walls with comp3. For Boeing, the the only walls that do not get no-slip are the tunnel walls. Therefore, what you should do is go to Selection -> "Select All Model Faces" and then create a comp3. The vector magnitude is 0, and the ~~direction~~ '''must be non-zero''' (i.e. [1 0 0]).	+	comp3: Set the no-slip walls with comp3. For Boeing, the the only walls that do not get no-slip are the tunnel walls. Therefore, what you should do is go to Selection -> "Select All Model Faces" and then create a comp3. The vector magnitude is 0, and the '''direction must be non-zero''' (i.e. [1 0 0]). Click Apply and Close. Re-open that attribute, find each of the 6 tunnel walls and click on "Model Associations" at the top and delete them. The faces should be in numerical order in the list. Apply and Close.