摘要
本文基于水中孤立气泡多阶谐振理论，在考虑了气泡内气体的导热损失、水的粘滞性和水的表面张力影响的同时，对气泡各阶谐振引起的声散射和声吸收机理作了分析。结果表明：气泡的声散射和声吸收随谐振阶数的增高而迅速减少；气泡处于谐振时，气体的导热损失在气泡对声波的耗散作用中起决定作用；与不考虑各种影响时相比，气泡的谐振频率发生频移。
Based on the theory of the multipole resonances in sound scattering from an isolated gas bubble in water, the mechanisms of the scattering and absorption of sound waves by a gas bubble in water are analyzed, with the effects of the thermal conduction in the gas, the viscosity and surface tension of water considered. It is shown that the scattering and absorption of sound waves by a gas bubble reduce quickly with the series of resonances increasing; at resonancesl the thermal conduction in the gas is decisive in the dissipative effects of a gas bubble; compared with the case in which the effects of the thermal conduction in the gas; the viscosity and surface tension of water are ignored; the resonance frequnces of a gas bubble are changed.
出处
《声学学报》
EI
CSCD
北大核心
1996年第4期475-482,共8页
Acta Acustica
