Numerical Simulation of Acoustic Wave Propagation in Cylindrical Fluid-Saturated Poroelastic Shell Immersed in Fluids
Acoustic wave propagation in fluid-saturated porous cylindrical shell is investigated in this paper by using the Biots theory. The Expressions for acoustic pressure and radical displacement in and out fluid, the expressions for components of solid and filtration displacement and pore fluid pressure and stress tensor are given. The numerical simulation is operated on acoustic field in fluid of poroelastic cylindrical shell, and the full-waveform is obtained by Fourier transform, and acoustic pressure field in frequency-wavenumber domain is analyzed, as well as the influence of inner and outer radii on wave amplitude is discussed. It shows that if the thickness of shell remains constant, the amplitude of longitudinal mode increases and that of Stoneley wave decreases when inner and outer radii increasing. In the fast formation the influence of inner and outer radii on the amplitude of longitudinal mode is notable. In the slow formation the amplitude of Stoneley wave will decrease with inner and outer radii increasing.
Cylindrical shell Poroelastic Acoustic wave
Wenyang Gao Qian Wu Zhiwen Cui Kexie Wang Hefeng Dong
Department of Acoustics and Microwave Physics, College of Physics, Jilin University,Changchun, 13001 Department of Electronics and Telecommunications, Norwegian University of Science and Technology, NO
国际会议
上海
英文
127-131
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）