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October 21, 2014, 12:18
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CrankNicholson
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#1 |
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New Member
Jim KIT
Join Date: Aug 2012
Location: Germany
Posts: 25
Rep Power: 14  |
hello,
can anybody help me to finde out, what is the formel of "CrankNicholson schemes" that OpenFoam uses? src/finiteVolume/finiteVolume/ddtSchemes/CrankNicholsonDdtScheme best, Jim |
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October 23, 2014, 10:32
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#2 |
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Senior Member
Join Date: Oct 2013
Posts: 397
Rep Power: 19 |
I haven't looked into the code, but did you check the scheme in general? Do you believe it uses a different formula?
http://en.wikipedia.org/wiki/Crank%E...icolson_method |
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October 23, 2014, 10:58
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#3 |
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Senior Member
Philipp
Join Date: Jun 2011
Location: Germany
Posts: 1,297
Rep Power: 27 |
The only difference is that OpenFOAM has a blending to Euler scheme in the code. But if you set "CrankNicolson 1" in fvSchemes, you get the regular Crank-Nicolson scheme.
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