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January 7, 2008, 02:15 |
TVD scheme
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#1 |
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In the upwind TVD scheme(Yee 87) there's an expression that reads
gamma = 0.5*Psi(a_(i+1/2, j))*(g_(i+1, j) - g_(i, j))/alpha_(i+1/2, j) a is the eigenvalues of the Jacobian matrix A g , alpha and gamma(?) are both column vectors i.e. g = transpose(g00, g10, g20, g30) So if you break it down to column matrix elements does it become: gamma00 = 0.5*Psi(a00_(i+1/2, j))*(g00_(i+1, j) - g00_(i, j))/alpha00_(i+1/2, j)gamma00 gamma10 = 0.5*Psi(a11_(i+1/2, j))*(g10_(i+1, j) - g10_(i, j))/alpha10_(i+1/2, j) etc... Is this correct? Thanks SHuo |
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