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Frequency Analysis of Sound Propagation Based on Direct Simulation

Hong-yu JI, Xin-hai XU, Chao LI, Shuai YE, Li-yang XU, Juan CHEN
2017 DEStech Transactions on Computer Science and Engineering  
The time domain direct simulation to the sound propagation has multiple advantages on adapting to complicated boundary conditions or applying on high performance computers, but it does not provide frequency information explicitly. However in the studies of ocean acoustics, underwater military applications and their numerical simulations, the frequency analysis of sound waves plays a much more significant role than the direct time domain results. For these reason we present a frequency analysis
more » ... frequency analysis technique embedded to the direct finite volume method (FVM) simulation of the sound propagation using OpenFOAM. In this paper we also test the accuracy and efficiency of the embedded technique by solving the sound propagation in an ideal wedge-shaped wave guide. The results of the experiments validated the embedded technique and the improvements comparing with the post-processing frequency analysis.
doi:10.12783/dtcse/mcsse2016/10981 fatcat:4hkv36csnrauni63zvnoawb7ga