Validation of an approximate model for the thermal behavior in acoustically driven bubbles.
Validation of an approximate model for the thermal behavior in acoustically driven bubbles.
复制标题
验证声驱动气泡中热行为的近似模型。
DOI：
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发表时间：
2011
影响因子：
2.4
通讯作者：
D. Lohse
中科院分区：
文献类型：
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作者：
L. Stricker;A. Prosperetti;D. Lohse
声学驱动气泡内自由基的化学产生由气泡内的局部温度决定。因此，模拟气泡中的化学反应速率需要准确评估温度场和与液体的热交换。本工作的目的是比较一个详细的偏微分方程模型，其中的温度场是空间分辨与常微分方程模型，其中的气泡内容被假定为具有均匀的平均温度和热交换建模的边界层近似的装置。这两个模型显示出良好的协议，在压力振幅的范围内，气泡是球形稳定的。
The chemical production of radicals inside acoustically driven bubbles is determined by the local temperature inside the bubbles. Therefore, modeling of chemical reaction rates in bubbles requires an accurate evaluation of the temperature field and the heat exchange with the liquid. The aim of the present work is to compare a detailed partial differential equation model in which the temperature field is spatially resolved with an ordinary differential equation model in which the bubble contents are assumed to have a uniform average temperature and the heat exchanges are modeled by means of a boundary layer approximation. The two models show good agreement in the range of pressure amplitudes in which the bubble is spherically stable.