[blockMesh] OpenFOAM 7 buoyantCavity tutorial-ERCOFTAC test case 79

kerim · February 3, 2020, 11:11

Dear All,
After spending a lot of time with modelling of the ercoftac test case 79 by using openfoam7 buoyantCavity tutorial I have found wrong definition of frontAndBack and topAndBottom patches in the blockMeshDict file. May be because of this mistake we have non converging iterations – residuals remaining almost constant during 1000 iterations.
Why kepsilonSST model of turbulence was used in this tutorial? It seems to me that for modelling of buoyant induced flows it is necessary to use buoyantKEpsilon model of turbulence.
Please correct me if I am wrong.

Kerim

p { margin-bottom: 0.1in; line-height: 115% }

kerim · February 10, 2020, 16:29

any ideas, corrections?

HPE · February 11, 2020, 07:58

Best way is to create a ticket in GitLab here: https://develop.openfoam.com/Develop...penfoam/issues

February 3, 2020, 11:11	OpenFOAM 7 buoyantCavity tutorial-ERCOFTAC test case 79	#1
kerim Senior Member abdikerim kurbanaliev Join Date: Jun 2010 Location: Kyrgyzstan, Osh Posts: 120 Rep Power: 15	Dear All, After spending a lot of time with modelling of the ercoftac test case 79 by using openfoam7 buoyantCavity tutorial I have found wrong definition of frontAndBack and topAndBottom patches in the blockMeshDict file. May be because of this mistake we have non converging iterations – residuals remaining almost constant during 1000 iterations. Why kepsilonSST model of turbulence was used in this tutorial? It seems to me that for modelling of buoyant induced flows it is necessary to use buoyantKEpsilon model of turbulence. Please correct me if I am wrong. Kerim p { margin-bottom: 0.1in; line-height: 115% }

February 11, 2020, 07:58		#3
HPE Senior Member Herpes Free Engineer Join Date: Sep 2019 Location: The Home Under The Ground with the Lost Boys Posts: 932 Rep Power: 12	Best way is to create a ticket in GitLab here: https://develop.openfoam.com/Develop...penfoam/issues __________________ The OpenFOAM community is the biggest contributor to OpenFOAM: User guide/Wiki-1/Wiki-2/Code guide/Code Wiki/Journal Nilsson/Guerrero/Holzinger/Holzmann/Nagy/Santos/Nozaki/Jasak/Primer Governance Bugs/Features: OpenFOAM (ESI-OpenCFD-Trademark) Bugs/Features: FOAM-Extend (Wikki-FSB) Bugs: OpenFOAM.org How to create a MWE New: Forkable OpenFOAM mirror

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February 10, 2020, 16:29		#2
kerim Senior Member abdikerim kurbanaliev Join Date: Jun 2010 Location: Kyrgyzstan, Osh Posts: 120 Rep Power: 15	any ideas, corrections?