Menghui Liang1, Changjun Zheng1,*, Yongbin Zhang1, Chuanxing Bi1
The International Conference on Computational & Experimental Engineering and Sciences, Vol.27, No.1, pp. 1-1, 2023, DOI:10.32604/icces.2023.09605
Abstract This paper presents an accurate and efficient indirect boundary element method (IBEM) accelerated by the
fast multipole algorithm (FMA)for the design sensitivity analysis of large-scale thin-body acoustic problems
above an infinite impedance plane. The non-uniqueness issue of the IBEM in solving exterior acoustic
problems is avoided by applying a hybrid combination of single- and double-layer potentials. The half-space
impedance Green’s function which involves an image complex line source and is valid for both mass-like and
spring-like impedance plane is employed to involve the sound-absorbing effect of the ground surface.
Explicit evaluation formulations of the singular More >
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