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-   -   on dealing with mixed derivatives in ADI (http://www.cfd-online.com/Forums/main/3030-dealing-mixed-derivatives-adi.html)

yf yap January 18, 2001 22:17

on dealing with mixed derivatives in ADI
 
dear sirs, i use the parabolized NV equations to solve a channel flow problem. after applying the coodinate transformation, i obtained one mixed derivative term in the difussion part of each equation. in order to use ADI to solved the transformed NV equations, how do i deal with the mixed derivatives? please advise. thanks.

yf yap January 19, 2001 00:19

Re: on dealing with mixed derivatives in ADI
 
typing mistake==> NV is NS(navier stokes)

Abhijit Tilak January 19, 2001 01:48

Re: on dealing with mixed derivatives in ADI
 
hi,

club the cross derivative terms with source terms. so u get (Ap+Sp)*Phi_p =Sigma A_i * Phi_i + Su where Su=dp/dx+cross_derivative terms. u can now implement adi by repetitively calling TDMA. routine hope this helps

abhijit tilak.


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