How to mapfields

Friendly · December 4, 2017, 03:06

Hi,

I have two meshes (case 1 and case 2) of the same geometry, but case 2 has a refinement box in it. So now I want to map all fields (p,u,k,epsilon,nut) from case 1 to case 2 to decrease calculation time.

How do I execute the command? OpenFOAM Wiki says:

Code:

 mapFields <source root> <source case> <target root> <target case> [-consistent] [-parallelSource] [-parallelTarget]

So basicly it is:

Code:

mapFields Desktop/case1 Dekstop/case2 -???

But which of the following commands? It is the same geometry, but with different meshes.

Glad for any advice.

Greetings

Friendly

RobertHB · December 4, 2017, 05:56

Step 1: If you want to map your data from e.g. time 50 than you have to create a "50" folder in the target case.
Step 2: In the controlDict of the target case set "startTime" to whatever time you want to map (here: 50)
Step 3: From your target case folder run "mapFields /home/user/OpenFOAM/version/run/source". You can get the correct path by using "pwd" in the command line or "Ctrl+L" if you are in a Ubuntu desktop environment.

/edit: If i remember correctly the -consistent flag can be used if both cases (target and source) have the same dimensions and boundary conditions. Mesh refinement does not matter.

Friendly · December 4, 2017, 14:21

Thank you! It worked exactly as you said.

qutadah.r · August 31, 2021, 19:41

i think we can just use following command:

mapFields -consistent -sourceTime "xx" /$Path_target_file

am I wrong?

December 4, 2017, 03:06	How to mapfields	#1
Friendly Member Join Date: Jun 2017 Posts: 73 Rep Power: 8	Hi, I have two meshes (case 1 and case 2) of the same geometry, but case 2 has a refinement box in it. So now I want to map all fields (p,u,k,epsilon,nut) from case 1 to case 2 to decrease calculation time. How do I execute the command? OpenFOAM Wiki says: Code: mapFields <source root> <source case> <target root> <target case> [-consistent] [-parallelSource] [-parallelTarget] So basicly it is: Code: mapFields Desktop/case1 Dekstop/case2 -??? But which of the following commands? It is the same geometry, but with different meshes. Glad for any advice. Greetings Friendly arun1994, Sai Krishna, ghora2 and 1 others like this.

December 4, 2017, 05:56		#2
RobertHB Senior Member Robert Join Date: May 2015 Location: Bremen, GER Posts: 292 Rep Power: 11	Step 1: If you want to map your data from e.g. time 50 than you have to create a "50" folder in the target case. Step 2: In the controlDict of the target case set "startTime" to whatever time you want to map (here: 50) Step 3: From your target case folder run "mapFields /home/user/OpenFOAM/version/run/source". You can get the correct path by using "pwd" in the command line or "Ctrl+L" if you are in a Ubuntu desktop environment. /edit: If i remember correctly the -consistent flag can be used if both cases (target and source) have the same dimensions and boundary conditions. Mesh refinement does not matter. peyman.havaej, Pepanson, arun1994 and 6 others like this.

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December 4, 2017, 14:21		#3
Friendly Member Join Date: Jun 2017 Posts: 73 Rep Power: 8	Thank you! It worked exactly as you said.

August 31, 2021, 19:41		#4
qutadah.r Senior Member qutadah Join Date: Jun 2021 Location: USA Posts: 101 Rep Power: 4	i think we can just use following command: mapFields -consistent -sourceTime "xx" /$Path_target_file am I wrong?