The HydroGrid project aims at the modelling and simulation of fluid and solute transport in subsurface geological media. Recent applications area are the contamination of aquifers by chemical pollutants, seawter intrusion in aquifers and deep storage of nuclear waste. They showed the importance of complexe physical and chemical processes.
Each process is simulated by a specific code. To simulate numerically a coupled physical problem, it is advisable to leave these codes untouched. Indeed, the models are discretized by different methods according to their physical properties,s o as to conserve invariants, to respect maximum principles, ... Last, some codes may need numerical libraries that are only available in some computing centres.
In order to be able to couple these codes in a simple an efficient way, we have opted for a coupling strategy : each code becomes a software component of the overall application, and only intercats with other components through its well-defined interface.
Resorting to Grid Computing will let us aggregate computing resources such as CPU and memory needed to couple the physical models. The various parallel codes run on parallel computers or PC clusters. These machine sare in turn interconnected via Wide Area Networks, possibly with a high bandwidth, so as to create a Computational Grid.
A detailed description of the project is available (in French): pdf format, or doc Word format.
HydroGrid is a multidisciplinary project, part of the "Globalization of computer resources and data" (GRID) ACI ("Incentive Concerted Action"), sponsored by the French Ministry of Research.
Project coordinator : Michel Kern