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Steadystate incompressible laminar Newtonianfluids solver |
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#1 |
Member
Anja Stretz
Join Date: Mar 2009
Posts: 92
Rep Power: 17 ![]() |
Hi,
does someone know, whether there is a solver for: steady-state, incompressible, laminar, Newtonian-fluids Thanks a lot, Anja |
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#2 |
Senior Member
Eugene de Villiers
Join Date: Mar 2009
Posts: 725
Rep Power: 21 ![]() |
Sure, just run simpleFoam and switch the turbulence model to laminar.
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#3 |
Member
Anja Stretz
Join Date: Mar 2009
Posts: 92
Rep Power: 17 ![]() |
And how do I have to do that? (I really can need the advice)
Thanks again |
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#4 |
Member
Anja Stretz
Join Date: Mar 2009
Posts: 92
Rep Power: 17 ![]() |
And what about the change from non-Newtonian fluids of simpleFoam to Newtonian fluids?
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#5 |
Senior Member
Eugene de Villiers
Join Date: Mar 2009
Posts: 725
Rep Power: 21 ![]() |
simpleFoam uses Newtonian fluid by default.
Open the "turbulenceProperties" file in the "constant" sub-directory and change the turbulence model from "RNGkEpsilon" to "laminar". |
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#6 |
Member
Anja Stretz
Join Date: Mar 2009
Posts: 92
Rep Power: 17 ![]() |
And afterwards turbulence off?
And what about all the other files in which parameters for the turbulent calculation are used? |
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#7 |
Senior Member
Eugene de Villiers
Join Date: Mar 2009
Posts: 725
Rep Power: 21 ![]() |
Sure switch turbulence off if you like. The rest should just work.
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#8 |
Guest
Posts: n/a
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As an alternate solution, I ended up writing a small variant of simpleFoam for my own work that does exactly what you want -- incompressible, Newtonian, steady-state, laminar flow -- without any additional "features" like turbulence or viscosity models.
It's a pretty trivial combination of parts from the existing OpenFOAM applications, so I can't really claim any ingenuity in creating it, but to save you the trouble of recreating it I've put a copy online here: http://dpdx.net/software/openfoam/st...w_1.0.0.tar.gz . There's a README.txt file in the .tar.gz file that covers what bits go where to install it. |
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#9 |
Member
Anja Stretz
Join Date: Mar 2009
Posts: 92
Rep Power: 17 ![]() |
Okay, one more question on that topic.
Why do I need a time-step for a steady-state solver? |
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#10 |
Senior Member
Hrvoje Jasak
Join Date: Mar 2009
Location: London, England
Posts: 1,907
Rep Power: 33 ![]() |
It's not a time step, just an iteration counter - you can set the deltaT to whatever you like. I usually use 1.
Enjoy, Hrv
__________________
Hrvoje Jasak Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk |
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#11 |
Member
Anja Stretz
Join Date: Mar 2009
Posts: 92
Rep Power: 17 ![]() |
Hi,
I'm still using simpleFoam as laminar solver. The problem is that the calculation takes that long. I've already changed the solver for p to AMG. Is there any suggestion for the endtime in the controldict? |
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#12 |
New Member
rameshkumar m bhoraniya
Join Date: Dec 2009
Posts: 22
Rep Power: 17 ![]() |
Hello,
This file is not available here. can you email on rameshbhoraniya@gmail.com |
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