SOLUTION OF COUPLED SYSTEMS BY DISTINCT OPERATORS

Addresses problems in mechanics and physics involving two or more coup led variables of different nature, or a number of distinct domains whi ch interact. For these kinds of problems, considers numerical solution by the coupling of operators appertaining to the individual participa ting phenomena, or defined in the domains. Reviews the cooperation of distinct discretized operators in connection with the integration of t emporal evolution processes, and the iterative treatment of stationary equations of state. The specification of subtasks complies with the d emand for an independent treatment on different processing units arisi ng in parallel computation. Physical subtasks refer to problems of dif ferent field variables interacting on the continuum level; their numbe r is usually small. Fine granularity may be achieved by separating the problem region into subdomains which communicate via the boundaries. In multiphysics simulations operators are preferably combined such tha t subdomains are processed in parallel on different units, while physi cal phenomena are processed sequentially in the subdomain.