Abstract
We explore the use of large-scale volumetric diffusors to reduce the power of a blast wave observed far away from a point source in a given direction. The blast wave propagation is approximated as being linear and modeled using a three-dimensional finite difference time domain method. The volumetric diffusor under consideration consists of many rigid scatterers and is intended to allow energy to propagate through while decreasing the maximum impulsive pressure. The optimization of rigid scatterer positions is used to achieve our goal of 5–7 dB within an arc of at least 30 deg. An overview of the model and methods will be presented along with preliminary results showing the effectiveness of our approach.
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