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August 1, 2011, 19:27
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[solved]how to discretize fourth order term
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#1 |
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Senior Member
Mieszko Młody
Join Date: Mar 2009
Location: POLAND, USA
Posts: 145
Rep Power: 17  |
Dear Foamers,
Does anyone of you know what is the best way to make 4 order term discretization: I mean: U(x,y) U_xxxx + U_yyyy Thanks ZM Last edited by ziemowitzima; August 4, 2011 at 13:27. Reason: solved |
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August 2, 2011, 18:54
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#2 |
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Senior Member
Mieszko Młody
Join Date: Mar 2009
Location: POLAND, USA
Posts: 145
Rep Power: 17 |
so far I found such explicit solution (U == T):
volVectorField gradT=fvc::grad(T); // (T_x, T_y) volScalarField Txxxx = gradT.component(0); // T_x gradT = fvc::grad(Txxxx); // (T_xx, T_xy) Txxxx = gradT.component(0); // T_xx gradT = fvc::grad(Txxxx); // (T_xxx, T_xxy) Txxxx = gradT.component(0); // T_xxx gradT = fvc::grad(Txxxx); // (T_xxxx, T_xxxy) Txxxx = gradT.component(0); // T_xxxx Maybe someone have some better idea ? Is it possible to descritize T_xxxx implicitly ? -ZM |
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August 4, 2011, 13:26
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#3 |
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Senior Member
Mieszko Młody
Join Date: Mar 2009
Location: POLAND, USA
Posts: 145
Rep Power: 17 |
seems to be solved:
http://www.cfd-online.com/Forums/ope...direction.html |
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| fourth order term |
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