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calculate quantities at boundary grids in FVM method

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Old   April 22, 2010, 11:54
Default calculate quantities at boundary grids in FVM method
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Mohammad Haddadi
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hi everybody
I'm writing a code for solving diffusion, could I solve grids at faces at the time or its better that I wouldn't Solve those grids at boundaries and after solving whole domain,calculate quantities at domain? which is better and why? I am confusing to select a way for calculating temperature at boundaries for boundary condition type II
please someone say what is the advantages and disatvantages of each procedure.
thanks before
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