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January 9, 2008, 07:48 |
Hi,
my Professor asked me t
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#1 |
New Member
Oliver Krüger
Join Date: Mar 2009
Posts: 3
Rep Power: 17 |
Hi,
my Professor asked me to take a look at OpenFOAM to see if it could be an alternative to CFX. Therefore I installed it and set up some testcases. I compared a simple cavitation testcase with about 154998 elements on both programs and got almost the same calculation times, but on different pc's with almost comparable hardware. As far as I could see, OF is able to produce equivalent results to commercial programms. Now I would like to know if somebody else compared calculation times between OpenFOAM and CFX or Fluent. Thanks in advance, Olli |
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January 14, 2008, 04:23 |
Hi Oliver,
I think, if I re
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#2 |
Senior Member
Cedric DUPRAT
Join Date: Mar 2009
Location: Nantes, France
Posts: 195
Rep Power: 17 |
Hi Oliver,
I think, if I remember well, that you can find thread on what you are looking for here (OF vs Fluent). but, If you want, I know an other comparaison between OF and CFX of turbulent flow in water turbines. Hakan NILSSON 23rd IAHR Symposium - Yokohama October 2006 "Evaluation of OpenFOAM for CFD of turbulent flow in water turbines" Hope it will help you. Regard, Cedric |
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January 17, 2008, 04:30 |
Hi Cedric,
thanks for your he
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#3 |
New Member
Oliver Krüger
Join Date: Mar 2009
Posts: 3
Rep Power: 17 |
Hi Cedric,
thanks for your help. I took a look at the threads you have mentioned and they are quite interesting altough they are not touching any calcultion times. Thanks Olli |
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January 17, 2008, 05:11 |
Hi Olli,
It seems that OF i
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#4 |
Senior Member
Jens Klostermann
Join Date: Mar 2009
Posts: 117
Rep Power: 17 |
Hi Olli,
It seems that OF is slower compared to Fluent but this depends a lot on the solver parameters (AMG parameters differ little in both codes), also the residual definition is quite different in both codes. So that the number of iterations (to get "convergence") can be quite different although the same residuals are set. Jens PS Es ist schwer nicht Äpfel mit Birnen zu vergleichen. |
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