Acoustic boundary layer
Acoustic boundary layer
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声学边界层
DOI：
10.1007/bf00894973
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发表时间：
1979
期刊：
影响因子：
--
通讯作者：
K. Chernyshev
中科院分区：
文献类型：
--
作者：
A. Egorichev;P. Kravchun;K. Chernyshev
本文根据边界层的概念，提出了一种计算任意形状的、由刚性壁围成的、充满粘性导热流体的体积内的振动速度场和温度场的方法。结果表明，声场的势波部分可以确定为理想非导热流体中的势波部分，而靠近壁面处不仅有势波，而且有从壁面向外运动的涡流速度波和温度波。本文讨论了一种求解一类广泛的问题的方法，在这种方法中，变形表面的边界条件可以用平面边界的条件代替，而不会产生明显的误差。
On the basis of the boundary-layer concept, a method is proposed for calculating the oscillation-velocity and temperature fields in a volume of arbitrary form, bounded by rigid walls and filled by a viscous heat-conducting fluid. It is shown that the potential part of the sound field may be determined as in an ideal non-heat-conducting fluid, while close to the wall there are not only potential waves but also eddy velocity waves and temperature waves moving out from the wall. A method of solving a broad class of problems is discussed in which the boundary conditions at a distorted surface may be replaced, without significant error, by conditions at a plane boundary.