典型文献
Generalized boundary dilatation flux on a flexible wall
文献摘要：
In this paper, by applying theoretical method to the governing equations of compressible viscous flow, we derive the theoretical formula of the boundary dilatation flux (BDF) on a flexible wall, which general-izes the most recent work of Mao et al. (Acta Mechanica Sinica 38 (2022) 321583) for a stationary wall. Different boundary sources of dilatation are explicitly identified, revealing not only the boundary genera-tion mechanisms of vortex sound and entropy sound, but also some additional sources due to the surface vorticity, surface angular velocity, surface acceleration and surface curvature. In particular, the generation mechanism of dilatation at boundary due to the coupled divergence terms is highlighted, namely, theproduct of the surface velocity divergence (??B · U) and the vorticity-induced skin friction divergence (??B ·τω). The former is attributed to the surface flexibility while the latter characterizes the footprints of near-wall coherent structures. Therefore, by properly designing the surface velocity distribution, the dilatation generation at the boundary could be controlled for practical purpose in near-wall compressible viscous flows.
文献关键词：
中图分类号：
作者姓名：
Tao Chen;Tianshu Liu
作者机构：
Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen 518055,China;Department of Mechanical and Aerospace Engineering,Western Michigan University,Kalamazoo,Michigan,49008,USA
文献出处：
引用格式：
[1]Tao Chen;Tianshu Liu-.Generalized boundary dilatation flux on a flexible wall)[J].力学快报（英文）,2022(06):445-450
A类：
Mechanica,theproduct
B类：
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AB值：
0.553911
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