Many thanks for the prompt response. It is encouraging to know that you linked phreeqC with a fortran solute transport model, and the computational efficiency was good. Some of the possibilities I can think are (1) link the fortran solute model 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? There are a few software that can convert a C program into a Fortan but it is a little risky with complex programs. I very much appreciate your help in this matter. Ashok 540-953-1555 ----- Original Message ----- From: "David L Parkhurst" <dlpark@xxxxxxxx> To: "Ashok Katyal" <ashok@xxxxxxxxxx> Sent: Wednesday, October 08, 2003 2:45 PM Subject: Re: Phreeqe > > phreeqC is definitely the superior model relative to phreeqE. The types of > chemistry include surface complexation, solid solutions, and general > kinetics, which are not available with phreeqE. Input for phreeqC is much > simpler. There are many other improvements and features that are present in > phreeqC. > > We have linked phreeqC with a Fortran solute transport model and have not > had any problems with computational inefficiency related to mixing the > languages. > > David > > > David Parkhurst (dlpark@xxxxxxxx) > U.S. Geological Survey > Box 25046, MS 413 > Denver Federal Center > Denver, CO 80225 > > Project web page: https://wwwbrr.cr.usgs.gov/projects/GWC_coupled > > > > > "Ashok Katyal" > <ashok@xxxxxxxxxx To: <dlpark@xxxxxxxx> > > cc: > Subject: Re: Phreeqe > 10/08/2003 11:30 > AM > > > > > > > Dear Dr. Parkhurst: > > We are planning to link a variably saturated 3D flow, and fate and > transport model with Phreeqe/Phreeqc that you have developed. After > reading USGS website I found that "PHREEQE is now obsolete and has been > replaced with the program PHREEQC". Our fate and transport model is in > FORTRAN, and linking with PHREEQC (written in C) may not be computationally > as efficient as linking with PHREEQE (fortran version) -- although creating > a DLL may be an option worth investigation. We will appreciate any advise > you may have for us in this matter. > > Many thanks. > > Ashok Katyal, Ph.D. > Principal Enginner > RASI Inc. > > 540-953-1555 > > > >
Please note that some U.S. Geological Survey (USGS) information accessed through this page may be preliminary in nature and presented prior to final review and approval by the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the sole responsibility of the user.
Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government.
The URL of this page is:
Last modified: $Date: 2005-09-13 21:04:21 -0600 (Tue, 13 Sep 2005) $
Visitor number 2274 since Jan 22, 1998.