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A Domain Decomposition /Nash equilibrium Methodology for the Solution of Direct and Inverse Problems in Fluid Dynamics

Speaker: Jacques Periaux

Abstract

The main goal of this lecture is to present the application of a decentralization optimization principle from Game Theory to the solution of direct and inverse problems in Fluid Dynamics. It will be shown in particular that multicriteria optimization methods "a la Nash" combine ideally with domain decomposition methods, with or without overlapping in order to solve complex problems. The resulting methodology is flexible and in the case of design problems has shown to perform well when using adjoint based techniques or evolutionary algorithms for the optimization.

The above methodology will be applied to the simulation and shape and position optimization for flows in nozzles and around aerodynamical shapes.The results of various numerical experiments will show the efficiency of the methods presented here.


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