气液多面体泡沫中声传播与衰减的传热
Heat transfer in sound propagation and attenuation through gas-liquid polyhedral foams
摘要：
一个细胞的方法，它考虑到泡沫的多面体的几何形状，并提供了广义Rayleigh-Plesset方程，包含非本地的时间项对应的热松弛。Rayleigh-Plesset方程与有效单相无粘流体的质量和动量平衡方程一起产生泡沫声学模型。目前的计算调和观察到的声速和衰减与预测使用的假设，热耗散是主要的阻尼机制，在一个范围内的泡沫膨胀和声激励频率。
英文摘要：
A cell method is developed, which takes into account the bubble geometry of polyhedral foams, and provides for the generalized Rayleigh-Plesset equation that contains the non-local in time term corresponding to heat relaxation. The Rayleigh-Plesset equation together with the equations of mass and momentum balances for an effective single-phase inviscid fluid yield a model for foam acoustics. The present calculations reconcile observed sound velocity and attenuation with those predicted using the assumption that thermal dissipation is the dominant damping mechanism in a range of foam expansions and sound excitation frequencies.
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