problem getting interFoam to behave

alfa_8C · April 21, 2011, 05:22

@santiagomarquezd - yea sure, of course I do attatch an "outlet box", in order to get a physically realisic profile instead of an artificial one caused by my bc.

@alberto - so as I understand you; the p_rgh is always uniform, but the value must not be 0. It's only 0 if the "sea level" outside my domain is at z=0, because the codes refenence is at z=0. In case "sea level" should NOT be at z=0, p_rgh varies. Is the sea level at z > 0, p_rgh is > 0 as well, is the sea level at z < 0, p_rgh is < 0.

Is this the way how hydrostatic pressure is taken into account?

alberto · April 21, 2011, 06:01

Take a look at how rho*g*h is defined in the code (createFields.H, line 109).

phuchuynh · September 14, 2011, 08:30

Quote:

Originally Posted by Terp

I am more than happy to share the files. I really appreciate your help with this. I have turned on the momentum predictor and it is currently running.

Terp

Hi Terp !

I have a question. Domain (mesh) which you are using is new in this solver or repaired of old domain. You can tell me how to creat new application (mesh) , it must to match with attributed in 0 directory.....? and did you choose a mesh of solver ??
I repaired the file blockMeshDict of backward facing (scalarTransportFoam) to have the new mesh. however, it rdidn't run similarly with solution your.
they attached the following image in the link: http://www.cfd-online.com/Forums/ope...tml#post323465

thanks ! cheers

Phuc

April 21, 2011, 06:01		#22
alberto Senior Member Alberto Passalacqua Join Date: Mar 2009 Location: Ames, Iowa, United States Posts: 1,912 Rep Power: 36	Take a look at how rhogh is defined in the code (createFields.H, line 109). __________________ Alberto Passalacqua GeekoCFD - A free distribution based on openSUSE 64 bit with CFD tools, including OpenFOAM. Available as in both physical and virtual formats (current status: http://albertopassalacqua.com/?p=1541) OpenQBMM - An open-source implementation of quadrature-based moment methods. To obtain more accurate answers, please specify the version of OpenFOAM you are using.

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April 21, 2011, 05:22		#21
alfa_8C Member Antonio Liggieri Join Date: Aug 2010 Posts: 76 Rep Power: 15	@santiagomarquezd - yea sure, of course I do attatch an "outlet box", in order to get a physically realisic profile instead of an artificial one caused by my bc. @alberto - so as I understand you; the p_rgh is always uniform, but the value must not be 0. It's only 0 if the "sea level" outside my domain is at z=0, because the codes refenence is at z=0. In case "sea level" should NOT be at z=0, p_rgh varies. Is the sea level at z > 0, p_rgh is > 0 as well, is the sea level at z < 0, p_rgh is < 0. Is this the way how hydrostatic pressure is taken into account?