A Parallel Computing Solution of the Simulation of Waste Disposal Problems and Contaminant Transport in the Ground for Use in an Expert System for Safety Monitoring


Keywords: parallel processing, waste disposal, contaminants transport, expert systems, simulation

Start Date: 1 February 95 / Duration: 36 months

[ participants / contact]

Objectivies and Approach

This project is directed towards the development of a parallel computing solution for the simulation of waste disposal and contaminant transport in the ground.

The main technical component of the work is the migration of existing finite element based and distinct element based codes to operation in a parallel environment. The finite element based codes relate to the behaviour of unsaturated clay when used to backfill and seal waste repositories. The codes deal with the hydraulic, mechanical and thermal behaviour of the material. The software produced is computationally very demanding and therefore a parallel mode operation is seen as an attractive option. The finite element codes are to be incorporated in an expert system for safety monitoring.

European links: CP93-4007 "The Performance of Clay Materials as Engineered Barriers for the Storage and Disposal of Waste Products". The three EU partners currently collaborate in three EU projects on the modelling of the thermal / hydraulic / mechanical behaviour of clay barriers, for which the finite element codes have been developed.

Progress and Results

The results achieved so far include: a parallel finite element program for non-linera elastic and elastoplastic models of saturated soils; a parallel version of UDEC for uncoupled mechanical problems; a parallel version of UDEC for uncoupled hydraulic problems; a parallel expert system for use in safety evaluation; a parallel mesh generator; a specification, in terms of features and performance, for the software modules that will be developed.

Information Dissemination Activities and/or Exploitation

The first workshop for the dissemination of the results was organised in Prague in March 1996. The next one is planned to take place in Poland.

A database will be created that will contain information about industrial enterprises that are active in the environmental geotechnics field in the countries of all the partners. This will enable all these organisations to be informed about the objectives and progress of the work.


University of Wales, Cardiff
P. O. Box 917
Cardiff CF2 1XH, UK

EU Partners

University of Wales, Cardiff, UK
Universitat Politecnica de Catalunya, E

Non-EU Partners

Technical University of Poznan, PL
Academy of Sciences of the Czech Republic, CZ
Czech Technical University, CZ
Geoteko, PL
Technical University of Budapest, HU
Reat, CZ


Dr. Hywel Thomas
Tel: +44 1222 874 279
Fax: +44 1222 874 292

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PARCOMPWASTE - CP94-9, May 1997

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html version of synopsis by Nick Cook