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Fortran 90 code for bicgstab algorithm

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Old   June 14, 2011, 11:50
Arrow URGENT: Please Help! Fortran 90 code for bicgstab algorithm
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CuriousBoy
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Hello Everybody,

I am solving a set of linear equations arising from the FVM discretisation of the 1D Poisson Equation which is part of a larger problem. In my case, the pressure is dependent on the density, which in turn is dependent on the temperature.

The matrix is not symmteric due to the boundary conditions imposed on the temperature field. As it also turns out, the matrix is not diagonal domnant but has the property ap(i) = ae(i) + aw(i), where ap is the main diagonal element, ae is the superdiagonal element and aw is the subdiagonal element in the i-th row. As a result, TDMA, Gauss-Seidel, Jacobi, SOR are not working.

My entire program is in Fortran 90. I am searching for a Fortran 90 BiCGSTAB code to solve the same problem. I tried with the commonly available F77 codes but apparently, they are not interfacing well with F90.

I tried to obtain SMLIB, but the website appears to be out of order.

I will be very greatful or your help in this matter. Thank you in advance.

Last edited by CuriousBoy; June 16, 2011 at 08:18.
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