Three-dimensional(3D)unsteady compressible flow over an open cavity and the relevant aeroacoustics are studied using a hybrid LES-acoustic analogy method.
使用拟-声学比拟结合的方法,研究三开式空腔的非定常可压缩过流及的气动声学问题。
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In general, metal foams are useful for high-tech shock and impact absorbers, the gas inside makes them extremely compressible, so they can absorb a lot of mechanical energy, while still retaining some of the strength and durability of a metal.
,属泡沫对高科技震动和压力吸收的帮助很大,内部气体让物质极度压缩,可吸收很机械能,而且依然保留属的强度和耐用性。