Applied fluid dynamics with high - performance supercomputing

The development of increasingly more powerful computers and supercomputers in coupled computer systems as well as the growing requirements to be met by the results computed for specific problems continuously add to the importance of numerical simulations of flow mechanics. Special applications exist, for instance, in weather forecasting and in turbulent combustion processes within the framework of safety analyses. Numerical simulation on parallel computers, and the distribution of problems over several computers in a computer complex with the resultant high computer capacity, allow multidimensional, transient, compressible, turbulent, and chemically reactive flows to be computed. With this type of computer system it is possible, for instance, to handle the hydrogen problem in reactor containments in the course of accidents exceeding the design basis and, in this way, develop engineered safeguards measures against such occurrences. (orig.)