[Commercial meshers] How To Use OpenFOAM Software To Calculate Pump?

renyun0511 · August 27, 2009, 05:34

hi all,
i am a new OpenFOAM user, several days ago ,i installed the OpenFOAM software(1.5 version) .now,i try to simulate internal flow filed of a pump by OpenFOAM,the problem puzzled me is that : i don't know how to use the sofeware?
first,i built the geometry in PRO/E.
then, i meshed it in Gambit,and exported the mesh to an .msh file.
the first problem is that i don't know which solver do i choose? and then how to operate it?
could someone help me? thanks a lot!

linnemann · August 28, 2009, 02:51

Hi
First thing to do would be to read the manual.

When that is done look at some of the tutorials (there are a lot).

If that doesn't help you look at www.openfoamwiki.net

The solver choice depends solely on what kind of physical problem you are solving. For steady flow in a pump I would look at simpleFoam or MRFsimpleFoam, use the search function to find info.

If you are new to CFD I suggest you buy and read:

http://www.ercoftac.org/index.php?id=77

The following which is free, although aimed at marine it has some very good guidelines when using CFD.

https://pronet.wsatkins.co.uk/marnet...ations/bpg.pdf

Best Regards
Linnemann

renyun0511 · August 28, 2009, 03:59

I did the .msh file in fluent,now,i'm try to do it in OpenFOAM.I don't know how to do in it?for example,how to set the parameter of inlet velocity and rotatioan rate?which values will be setted and which elements can be ingnored? which puzzled me a lot!
thanks all the same!

yingfeng · August 28, 2009, 14:13

Hi,

It is good idea to through the tutorial case first. In general you probably need to do the following:

1. import mesh into OpenFOAM. If the boundary conditions are lost, use autoPatch to find the patches. After that, paraFoam can show you which patch is where. checkMesh is a good tool to evaluate your mesh.

2. look at the case folder, 0/ folder is where you set boundary condition for each field, for example, U and p. The best way currently is to manually edit boundary condition for each patch; system/ folder is where you choose the schemes and solver parameters. constant/ folder is where you set physical properties.

3. run your solver. You can always monitor your result with paraFoam

Good luck!
Yingfeng

renyun0511 · August 30, 2009, 22:50

Thank you very much! now,i try to use MRFSimpleFoam solver,when i open the mixerVessel2D/ foders,i just see the rotor,the stator,the back and the front,i know they are not what i want ,but i don't know how to modify them.I'm not understand the information in these folder

August 27, 2009, 05:34	How To Use OpenFOAM Software To Calculate Pump?	#1
renyun0511 Member 任芸 Join Date: Jun 2009 Posts: 75 Rep Power: 16	hi all, i am a new OpenFOAM user, several days ago ,i installed the OpenFOAM software(1.5 version) .now,i try to simulate internal flow filed of a pump by OpenFOAM,the problem puzzled me is that : i don't know how to use the sofeware? first,i built the geometry in PRO/E. then, i meshed it in Gambit,and exported the mesh to an .msh file. the first problem is that i don't know which solver do i choose? and then how to operate it? could someone help me? thanks a lot!

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August 28, 2009, 02:51		#2
linnemann Senior Member Niels Nielsen Join Date: Mar 2009 Location: NJ - Denmark Posts: 555 Rep Power: 27	Hi First thing to do would be to read the manual. When that is done look at some of the tutorials (there are a lot). If that doesn't help you look at www.openfoamwiki.net The solver choice depends solely on what kind of physical problem you are solving. For steady flow in a pump I would look at simpleFoam or MRFsimpleFoam, use the search function to find info. If you are new to CFD I suggest you buy and read: http://www.ercoftac.org/index.php?id=77 The following which is free, although aimed at marine it has some very good guidelines when using CFD. https://pronet.wsatkins.co.uk/marnet...ations/bpg.pdf Best Regards Linnemann

August 28, 2009, 03:59		#3
renyun0511 Member 任芸 Join Date: Jun 2009 Posts: 75 Rep Power: 16	I did the .msh file in fluent,now,i'm try to do it in OpenFOAM.I don't know how to do in it?for example,how to set the parameter of inlet velocity and rotatioan rate?which values will be setted and which elements can be ingnored? which puzzled me a lot! thanks all the same!

August 28, 2009, 14:13		#4
yingfeng New Member Yingfeng Shen Join Date: Mar 2009 Location: Finland Posts: 8 Rep Power: 17	Hi, It is good idea to through the tutorial case first. In general you probably need to do the following: 1. import mesh into OpenFOAM. If the boundary conditions are lost, use autoPatch to find the patches. After that, paraFoam can show you which patch is where. checkMesh is a good tool to evaluate your mesh. 2. look at the case folder, 0/ folder is where you set boundary condition for each field, for example, U and p. The best way currently is to manually edit boundary condition for each patch; system/ folder is where you choose the schemes and solver parameters. constant/ folder is where you set physical properties. 3. run your solver. You can always monitor your result with paraFoam Good luck! Yingfeng

August 30, 2009, 22:50		#5
renyun0511 Member 任芸 Join Date: Jun 2009 Posts: 75 Rep Power: 16	Thank you very much! now,i try to use MRFSimpleFoam solver,when i open the mixerVessel2D/ foders,i just see the rotor,the stator,the back and the front,i know they are not what i want ,but i don't know how to modify them.I'm not understand the information in these folder