Differencing Scheme MARS

michael · August 10, 2006, 05:09

Hello,

which Differencing Scheme in OpenFOAM is equal to the MARS (second order) Diff Scheme in Star-CD?

thanks for your help!

regards

Michael

hjasak · August 10, 2006, 11:51

Not implemented in OpenFOAM - basically because (in my opinion) it's rubbish.

There is a whole bunch of second-order schemes but no limited gradient-extrapolated one like Mars. If you want to do it yourself, take something like SFCD and instead of using cell centre values in the limiter, do a one-sided extrapolation to the face using the cell gradient.

Hrv

August 10, 2006, 05:09	Hello, which Differencing S	#1
michael New Member Michael R. Join Date: Mar 2009 Posts: 12 Rep Power: 18	Hello, which Differencing Scheme in OpenFOAM is equal to the MARS (second order) Diff Scheme in Star-CD? thanks for your help! regards Michael

August 10, 2006, 11:51	Not implemented in OpenFOAM -	#2
hjasak Senior Member Hrvoje Jasak Join Date: Mar 2009 Location: London, England Posts: 1,908 Rep Power: 34	Not implemented in OpenFOAM - basically because (in my opinion) it's rubbish. There is a whole bunch of second-order schemes but no limited gradient-extrapolated one like Mars. If you want to do it yourself, take something like SFCD and instead of using cell centre values in the limiter, do a one-sided extrapolation to the face using the cell gradient. Hrv sushant and Amit Mathur like this. __________________ Hrvoje Jasak Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk

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