[Other] mesh scaling on openfoam

reza1980 · May 14, 2013, 06:04

Hi Foamers,
I simulate a ship propeller by using OpenFoam .I have case files for the propeller in real size and initially approach to the results .Now, I need to scale the propeller in model size with specified scale.
Would you please let me know how to scale the files to obtain case file for the model.
/Reza

sasanghomi · May 14, 2013, 07:22

Hi Reza,
If you have a mesh file and you want to scale the geometry you can use (-scale)
for example if you have a (.msh) file you can use :

Code:

fluentMeshToFoam filename.msh -scale 0.001

Actually this code scales the geometry.

hope this helps,
Sasan.

reza1980 · May 14, 2013, 07:37

Hi Sasan,
The mesh generated by pointwise and the exported file into Openfoam are as polymesh in constant .

colinB · May 14, 2013, 07:42

Hi
the utility you are looking for is called:

transformPoints

type in the terminal

transformPoints -help

to get the correct usage and available options.

regards

May 14, 2013, 06:04	mesh scaling on openfoam	#1
reza1980 Member reza Join Date: Jan 2013 Location: Goteborg-Sweden Posts: 79 Rep Power: 13	Hi Foamers, I simulate a ship propeller by using OpenFoam .I have case files for the propeller in real size and initially approach to the results .Now, I need to scale the propeller in model size with specified scale. Would you please let me know how to scale the files to obtain case file for the model. /Reza sourav90 likes this.

May 14, 2013, 07:22		#2
sasanghomi Senior Member Sasan Ghomi Join Date: Sep 2012 Location: Denmark Posts: 292 Rep Power: 14	Hi Reza, If you have a mesh file and you want to scale the geometry you can use (-scale) for example if you have a (.msh) file you can use : Code: fluentMeshToFoam filename.msh -scale 0.001 Actually this code scales the geometry. hope this helps, Sasan. lth and Divyajit like this.

May 14, 2013, 07:42		#4
colinB Senior Member Join Date: Aug 2010 Location: Groningen, The Netherlands Posts: 216 Rep Power: 18	Hi the utility you are looking for is called: transformPoints type in the terminal transformPoints -help to get the correct usage and available options. regards sourav90 likes this.

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May 14, 2013, 07:37		#3
reza1980 Member reza Join Date: Jan 2013 Location: Goteborg-Sweden Posts: 79 Rep Power: 13	Hi Sasan, The mesh generated by pointwise and the exported file into Openfoam are as polymesh in constant .