平面波斜入射时水中液体柱形粒子的声辐射力

Acoustic radiation force of a fluid cylindrical particle in obliquely incident plane wave

利用声散射理论,推导了平面波斜入射时水中液体柱形粒子的声辐射力,研究了入射角变化对柱形粒子声辐射力的影响,并对水中不同液体柱形粒子的声辐射力进行了仿真。结果表明:在声波以小角度入射情况下,当ka值较小时,声辐射力几乎不随入射角变化;当ka>2时,声辐射力随入射角的增加而减小。在入射角趋于纵波临界角情况下,不同材料粒子的声辐射力随ka的变化规律基本相同。

Based on sound scattering theory,the expression of acoustic radiation force for a fluid cylindrical particle immersed in water with obliquely incident plane wave was derived.The effects of incidence angle on acoustic radiation force of the particle with different materials were studied by numercal simulation.Simulation results show that the angle of incidence has no influence on acoustic radiation force for small values of ka when the angle of incidence is small.However,the values of acoustic radiation force decrease with the increase of the angle of incident as ka〉2.When the angle of incidence tends to the critical angle of longitudinal wave,the changing law of the acoustic radiation force function for different particle is almost same with each other.