Transformation method and wave control |
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Authors: | Zheng Chang Jin Hu Geng-Kai Hu |
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Institution: | Zheng Chang·Jin Hu·Geng-Kai Hu School of Aerospace Engineering,Beijing Institute of Technology,100081 Beijing,China School of Information and Electronics,China |
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Abstract: | Transformation method provides an efficient way to control wave propagation by materials.The transformed relations for field and material during a transformation are essential to fulfill this method.We propose a systematic method to derive the transformed relations for a general physic process,the constraint conditions are obtained by considering geometrical and physical constraint during a mapping. The proposed method is applied to Navier's equation for elastodynamics,Helmholtz's equation for acoustic wave... |
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Keywords: | Wave control Elastic wave Acoustic wave Electromagnetic wave Local affine transformation |
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