# coordinate transformation and flux splitting

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 December 22, 2006, 07:56 coordinate transformation and flux splitting #1 Beginner Guest   Posts: n/a Sponsored Links Hi, I am relatively new to CFD. Till now, I have been working on cartesian grids. But, now I am extending it to generalized coordinates. Though the flux calculations are striaght forward with the transformations, I am a bit confused with the identification of wavespeeds and relevant information required for flux splitting. In short, when I transform a equation dU/dT + dF/dX + dG/dY = Q to dU*/dT + dF*/dEps + dG*/dGamma = Q how do I calculate wave speeds for F* and G*? Should I calculate the eigen values for the transformed equation? Thanks in advance for your help.

 December 22, 2006, 14:33 Re: coordinate transformation and flux splitting #2 ag Guest   Posts: n/a Compute the eigenvalues of the flux Jacobians.

 December 22, 2006, 23:33 Re: coordinate transformation and flux splitting #3 beginner Guest   Posts: n/a So, it is the eigen value of the transformed flux jacobian. The corresponding wavespeeds will be used to formulate the scheme in the computational space. Please correct me if I am wrong.

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