Abstract
In this work, we investigate a combination of classical optimization techniques from optimal control and a rounding strategy based on shape optimization for interface identification for problems constrained by partial differential equations. The goal is to identify the location of pollution sources in a fluid flow represented by a control that is either active or inactive. We use a relaxation of the binary problem on a coarse grid as initial guess for the shape optimization with higher resolution. The result is a computationally cheap method, where large shape deformations do not have to be performed. We demonstrate that our algorithm is, moreover, able to change the topology of the initial guess.
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Acknowledgements
This work has been partly supported by the German Research Foundation (DFG) within the priority program SPP 1648 “Software for Exascale Computing” under Contract No. Schu804/12-1 and the research training group 2126 “Algorithmic Optimization.”
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Communicated by Zenon Mróz.
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Siebenborn, M. A Shape Optimization Algorithm for Interface Identification Allowing Topological Changes. J Optim Theory Appl 177, 306–328 (2018). https://doi.org/10.1007/s10957-018-1279-4
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DOI: https://doi.org/10.1007/s10957-018-1279-4