波動系バイフィジカルクロークのトポロジー最適化

抄録

Biphysical cloaks that can manipulate both electromagnetic and acoustic waves are optimally designed by a topology optimization based on covariance matrix adaptation evolution strategy. The presented method explores optimum sets of level set functions which express the structures of biphysical cloaks for minimizing three objective functions on the scattering of E and H polarized electromagnetic and acoustic waves. We solve two Helmholtz equations derived from Maxwell’s equations evaluating the performances of electromagnetic cloaks and solve an acoustic-elastic coupled problem for evaluating the performance of acoustic cloak.