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Dear Colleague: It is our pleasure to inform you that we have released, free to the public, Version 1.0 of a hydrobiogeochemistry code, HydroBioGeoChem123D (HBGC123D). HBGC123D is a Lagrangian-Eulerian finite element code that models the coupled hydrogeological, geochemical, and microbiological processes in non-isothermal subsurface environments. It is designed to assist scientists and engineers to study the coupled processes at various scales from laboratory soil columns to large field sites. It is also a high performance computer code that utilizes the multiprocessor power of today's parallel computers. In the early design phase, we realized that there was a need for a fast and efficient multiprocessor code such as HBGC123D. HBGC123D 1.0 has been rigorously tested on SGI shared-memory multiprocessor workstations, Linux PC's, other UNIX workstations, and Windows 95/NT PC's. Work is currently under way to include distributed-memory platforms such as the IBM SP and workstation clusters. These improvements will be available in subsequent releases. We will be very honored if you could take time to visit our web site at http://hbgc.esd.ornl.gov/ Documentation, FAQ's, source code and libraries, binary executables for selected platforms, and a suite of test examples are accessible through the web site. You are also highly encouraged to run through the test examples that may help you discern the capabilities of HBGC123D. The web site also provides a forum for discussion of HBGC123D and question-and-answer sessions. We would especially welcome and appreciate your feedback concerning this code and our related work at Oak Ridge National Laboratory. Thank you very much for your attention. Yours sincerely, J. P. (Jack) Gwo, Ph.D., ------------------------------------------------------------- Jin-Ping (Jack) Gwo Oak Ridge National Laboratory email: gwojp@ornl.gov Center for Computational Sciences phone: 865-576-1620 P.O. Box 2008, MS 6203 fax: 865-241-2850 Oak Ridge, TN 37831 ------------------------------------------------------------- |