Use of Large-Eddy Simulation to Characterize Roughness Effect of Turbulent Flow Over a Wavy Wall
Use of Large-Eddy Simulation to Characterize Roughness Effect of Turbulent Flow Over a Wavy Wall
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使用大涡模拟来表征波状壁上湍流的粗糙度效应
DOI：
10.1115/1.1624424
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发表时间：
2003
影响因子：
2
通讯作者：
V. C. Patel
中科院分区：
文献类型：
--
作者：
J. Cui;Ching;V. C. Patel
采用大涡模拟方法，从表面粗糙度的角度研究了正弦波形壁面湍流流动。模拟结果在时间和空间上进行平均，得到所谓的粗糙度函数（对数律中的偏移）、等效砂粒粗糙度和虚拟原点，以及这些量对振幅波长比的依赖关系
Large-eddy simulation is used to study turbulent flow over a sinusoidal wavy wall from the perspective of surface roughness effects. Simulation results are averaged in time and space to obtain the so-called roughness function (shift in the logarithmic law), the equivalent sand-grain roughness and the virtual origin, and the dependence of these quantities on the amplitude-to-wavelength ratio