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Re: PhreeqC -- thanks

> Some of the possibilities I can think are (1) link the fortran solute
to Phreeqc through a DLL, (2) write results of phreeqC, and the fate and
transport model at each iteration/time step to a disk and read (for each
module) -- this could slow things if we simulate a large 3D problem for a
lengthy duration!. Did you use a different approach?

We passed arrays from Fortran to C, did the geochemical calculation in C
and then passed arrays back to Fortran.

> There are a few
software that can convert a C program into a Fortan but it is a little
with complex programs.

I don't see any need to do this. We have successfully linked C and Fortran
routines on Windows, Linux, Sun, and Dec Alphas. You can convert Fortran to
C, but I doubt you can convert C to Fortran anyway.


David Parkhurst (dlpark@xxxxxxxx)
U.S. Geological Survey
Box 25046, MS 413
Denver Federal Center
Denver, CO 80225

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