Getting Started - Revision history

Argonon: /* Constant Directory */

2025-06-14T11:20:53Z

Constant Directory

← Older revision		Revision as of 11:20, 14 June 2025
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	* '''"constant"'''		* '''"constant"'''
	** '''''transportProperties'''''		** '''''[https://www.openfoam.com/documentation/user-guide/5-models-and-physical-properties/5.2-thermophysical-models transportProperties]'''''
	** '''''turbulenceProperties'''''		** '''''[https://www.openfoam.com/documentation/guides/latest/doc/guide-turbulence.html turbulenceProperties]'''''
	** '''''ObjectFile - "polyMesh"'''''		** '''''ObjectFile - "polyMesh"'''''

	The last element in the list simply represent a 3D object or an already meshed object for OpenFOAM, underling that we need a specific mesh file/files for this software.		The last element in the list simply represent a 3D object or an already meshed object for OpenFOAM, underling that we need a specific mesh file/files for this software.

	The other two file, '''''transportProperties''''' and '''''turbulenceProperties''''' , contains respectively the fluid physic properties, such dynamic viscosity or in general transport constant, and the turbulence model. On the left are showed images for both files.		The other two file, '''''[https://www.openfoam.com/documentation/user-guide/5-models-and-physical-properties/5.2-thermophysical-models transportProperties]''''' and '''''[https://www.openfoam.com/documentation/guides/latest/doc/guide-turbulence.html turbulenceProperties]''''' , contains respectively the fluid physic properties, such dynamic viscosity or in general transport constant, and the turbulence model. On the left are showed images for both files.

	In this example the '''''turbulenceProperties''''' file is set with a '''RAS''' (''Reynolds Averaged Simulation'') and the model selected is kOmegaSST. Values of k and omega are setted in the 0 directory, in the same name files.		In this example the '''''turbulenceProperties''''' file is set with a '''RAS''' (''Reynolds Averaged Simulation'') and the model selected is kOmegaSST. Values of k and omega are setted in the 0 directory, in the same name files.

Argonon: /* Constant Directory */

2025-06-14T11:16:23Z

Constant Directory

← Older revision		Revision as of 11:16, 14 June 2025
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	The boundary field key contains all the boundary conditions defined in the mesh. Each of them need a type and the relative options. Here is linked the [https://www.openfoam.com/documentation/user-guide/a-reference/a.4-standard-boundary-conditions standard boundary conditions] list for OpenFOAM.		The boundary field key contains all the boundary conditions defined in the mesh. Each of them need a type and the relative options. Here is linked the [https://www.openfoam.com/documentation/user-guide/a-reference/a.4-standard-boundary-conditions standard boundary conditions] list for OpenFOAM.

	The # include command simply copy and past the given file's content. So in the "Include/initialConditions", for example, we wrote all initial conditions for the case, like velocity, pressure ecc... and then import it into U file. ~~In particular we have "flowVelocity: xxxx" and~~ the $~~flowVelocity command~~ get the value ~~xxxx~~.		The '''''# include''''' command simply copy and past the given file's content. So in the "Include/initialConditions", for example, we wrote all initial conditions for the case, like velocity, pressure ecc... and then import it into U file. The '''''internalField''''' key set the field value, the '''''$''''' symbol get the associated value.

	=== Constant Directory ===		=== Constant Directory ===

Argonon: /* Run your case : */

2025-06-14T11:07:04Z

Run your case :

← Older revision		Revision as of 11:07, 14 June 2025
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	=== Run your case : ===		=== Run your case : ===
	We are finally ready to start the simulation. In the case directory, you will find two files named '''''Allrun''''' and '''''Allclean'''''. These are bash scripts that enable the user to clean up the case and initiate the simulation. However, it's beneficial to learn how to perform these actions manually. <syntaxhighlight lang="bash" line="1">		We are finally ready to start the simulation. In the case directory, you will find two files named '''''Allrun''''' and '''''Allclean'''''. These are bash scripts that enable the user to clean up the case and initiate the simulation by typing: <syntaxhighlight lang="bash">
			/Allclean
			/Allrun
			</syntaxhighlight>
			If these file are not executable, run the following command: <syntaxhighlight lang="bash">
			/chmod +x /All*
			</syntaxhighlight>
			However, it's beneficial to learn how to perform these actions manually: <syntaxhighlight lang="bash" line="1">
	cp ./0.orig ./0		cp ./0.orig ./0
	decomposePar		decomposePar

Argonon at 11:04, 14 June 2025

2025-06-14T11:04:43Z

← Older revision		Revision as of 11:04, 14 June 2025
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	The boundary field key contains all the boundary conditions defined in the mesh. Each of them need a type and the relative options. Here is linked the [https://www.openfoam.com/documentation/user-guide/a-reference/a.4-standard-boundary-conditions standard boundary conditions] list for OpenFOAM.		The boundary field key contains all the boundary conditions defined in the mesh. Each of them need a type and the relative options. Here is linked the [https://www.openfoam.com/documentation/user-guide/a-reference/a.4-standard-boundary-conditions standard boundary conditions] list for OpenFOAM.

	The # include command simply copy and past the given file's content. So in the "Include/~~InitialConditions~~", for example, we wrote all initial conditions for the case, like velocity, pressure ecc... and then import it into U file. In particular we have "~~FlowVelocity~~: xxxx" and the $~~FlowVelocity~~ command get the value xxxx.		The # include command simply copy and past the given file's content. So in the "Include/initialConditions", for example, we wrote all initial conditions for the case, like velocity, pressure ecc... and then import it into U file. In particular we have "flowVelocity: xxxx" and the $flowVelocity command get the value xxxx.

	=== Constant Directory ===		=== Constant Directory ===

Argonon at 11:04, 14 June 2025

2025-06-14T11:04:21Z

← Older revision		Revision as of 11:04, 14 June 2025
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	The boundary field key contains all the boundary conditions defined in the mesh. Each of them need a type and the relative options. Here is linked the [https://www.openfoam.com/documentation/user-guide/a-reference/a.4-standard-boundary-conditions standard boundary conditions] list for OpenFOAM.		The boundary field key contains all the boundary conditions defined in the mesh. Each of them need a type and the relative options. Here is linked the [https://www.openfoam.com/documentation/user-guide/a-reference/a.4-standard-boundary-conditions standard boundary conditions] list for OpenFOAM.

	The # include command simply copy and past the given file's content. So in the "Include/~~InitialConditions2~~, for example, we wrote all initial conditions for the case, like velocity, pressure ecc... . ~~This~~		The # include command simply copy and past the given file's content. So in the "Include/InitialConditions", for example, we wrote all initial conditions for the case, like velocity, pressure ecc... and then import it into U file. In particular we have "FlowVelocity: xxxx" and the $FlowVelocity command get the value xxxx.

	=== Constant Directory ===		=== Constant Directory ===

Argonon at 11:02, 14 June 2025

2025-06-14T11:02:57Z

← Older revision		Revision as of 11:02, 14 June 2025
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	The boundary field key contains all the boundary conditions defined in the mesh. Each of them need a type and the relative options. Here is linked the [https://www.openfoam.com/documentation/user-guide/a-reference/a.4-standard-boundary-conditions standard boundary conditions] list for OpenFOAM.		The boundary field key contains all the boundary conditions defined in the mesh. Each of them need a type and the relative options. Here is linked the [https://www.openfoam.com/documentation/user-guide/a-reference/a.4-standard-boundary-conditions standard boundary conditions] list for OpenFOAM.

			The # include command simply copy and past the given file's content. So in the "Include/InitialConditions2, for example, we wrote all initial conditions for the case, like velocity, pressure ecc... . This

	=== Constant Directory ===		=== Constant Directory ===

Argonon at 20:53, 29 April 2025

2025-04-29T20:53:36Z

← Older revision		Revision as of 20:53, 29 April 2025
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	'''decomposePa'''r start the decomposition of the case, splitting the mesh and apply boundaries, in order to parallelize the process.		'''decomposePa'''r start the decomposition of the case, splitting the mesh and apply boundaries, in order to parallelize the process.

	~~'''~~mpirun -np "N" "methodName" -parallel~~'''~~ run the case in parallel. ''N'' are your core numbers, ''methodName'' is the method selected in the '''''controlDict''''' file. In this example we are using '''''simpleFoam'''''.		<syntaxhighlight lang="bash">
			mpirun -np "N" "methodName" -parallel
			</syntaxhighlight>The above command run the case in parallel. ''N'' are your core numbers, ''methodName'' is the method selected in the '''''controlDict''''' file. In this example we are using '''''simpleFoam'''''.

	if mpi is not installed it is possible to get it with the following commands<syntaxhighlight lang="bash" line="1">		if mpi is not installed it is possible to get it with the following commands<syntaxhighlight lang="bash" line="1">

Argonon: /* Run your case : */

2025-04-14T19:45:32Z

Run your case :

← Older revision		Revision as of 19:45, 14 April 2025
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	'''mpirun -np "N" "methodName" -parallel''' run the case in parallel. ''N'' are your core numbers, ''methodName'' is the method selected in the '''''controlDict''''' file. In this example we are using '''''simpleFoam'''''.		'''mpirun -np "N" "methodName" -parallel''' run the case in parallel. ''N'' are your core numbers, ''methodName'' is the method selected in the '''''controlDict''''' file. In this example we are using '''''simpleFoam'''''.

			if mpi is not installed it is possible to get it with the following commands<syntaxhighlight lang="bash" line="1">
			sudo update
			sudo apt-get install openmpi
			</syntaxhighlight>

	Now you are finally running your first simulation in OpenFOAM!		Now you are finally running your first simulation in OpenFOAM!
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	</syntaxhighlight>This recompose your last iteration from processor directories.		</syntaxhighlight>This recompose your last iteration from processor directories.

	Last command needed it <syntaxhighlight line="1">		Last command needed it <syntaxhighlight line="1" lang="bash">
	paraFoam		paraFoam
	</syntaxhighlight>This will load mesh and result in [https://www.paraview.org/ paraview]. If it is not installed on your device, it is possible to obtain with <syntaxhighlight lang="bash" line="1">		</syntaxhighlight>This will load mesh and result in [https://www.paraview.org/ paraview]. If it is not installed on your device, it is possible to obtain with <syntaxhighlight lang="bash" line="1">
	sudo ~~upgrade~~		sudo update
	sudo apt install paraview		sudo apt install paraview
	</syntaxhighlight>		</syntaxhighlight>

Argonon: /* Run your case : */

2025-04-14T19:39:49Z

Run your case :

← Older revision		Revision as of 19:39, 14 April 2025
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	Now you are finally running your first simulation in OpenFOAM!		Now you are finally running your first simulation in OpenFOAM!

			=== Post processing ===
			When the simulation end, we are ready to give a look. On the console run this command: <syntaxhighlight lang="bash" line="1">
			reconstrucPar -latestTime
			</syntaxhighlight>This recompose your last iteration from processor directories.

			Last command needed it <syntaxhighlight line="1">
			paraFoam
			</syntaxhighlight>This will load mesh and result in [https://www.paraview.org/ paraview]. If it is not installed on your device, it is possible to obtain with <syntaxhighlight lang="bash" line="1">
			sudo upgrade
			sudo apt install paraview
			</syntaxhighlight>

Argonon: /* Run your case : */

2025-04-14T19:26:26Z

Run your case :

← Older revision		Revision as of 19:26, 14 April 2025
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	=== Run your case : ===		=== Run your case : ===
	~~Finally we~~ are ready to ~~run~~ the simulation. in the case directory ~~there are~~ two files named "Allrun" and "Allclean". ~~Both~~ are bash ~~executives~~ that ~~allow~~ the user to clean-up the case and ~~start it~~, ~~but for now~~ it's ~~better understand which commands must be used~~. <syntaxhighlight lang="bash" line="1">		We are finally ready to start the simulation. In the case directory, you will find two files named '''''Allrun''''' and '''''Allclean'''''. These are bash scripts that enable the user to clean up the case and initiate the simulation. However, it's beneficial to learn how to perform these actions manually. <syntaxhighlight lang="bash" line="1">
	cp ./0.orig ./0		cp ./0.orig ./0
	decomposePar		decomposePar