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Variational approach to shape derivatives

Published online by Cambridge University Press:  07 February 2008

Kazufumi Ito
Affiliation:
Department of Mathematics, North Carolina State University, Raleigh, North Carolina, USA; kito@unity.ncsu.edu
Karl Kunisch
Affiliation:
Institute for Mathematics and Scientific Computing, Karl-Franzens-University Graz, 8010 Graz, Austria; karl.kunisch@uni-graz.at; gunther.peichl@uni-graz.at
Gunther H. Peichl
Affiliation:
Institute for Mathematics and Scientific Computing, Karl-Franzens-University Graz, 8010 Graz, Austria; karl.kunisch@uni-graz.at; gunther.peichl@uni-graz.at
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Abstract

A general framework for calculating shape derivatives for optimization problems with partial differential equations as constraints is presented. The proposed technique allows to obtain the shape derivative of the cost without the necessity to involve the shape derivative of the state variable. In fact, the state variable is only required to be Lipschitz continuous with respect to the geometry perturbations. Applications to inverse interface problems, and shape optimization for elliptic systems and the Navier-Stokes equations are given.

Type
Research Article
Copyright
© EDP Sciences, SMAI, 2008

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