T. A. Gimon, D. A. Elistratov, A. D. Zhelonkin, S. V. Lukashevich, S. O. Morozov, A. N. Shiplyuk
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引用次数: 0
摘要
研究了气体介质受控谐波非稳态扰动源附近的流动情况，该扰动源适用于在可压缩边界层中产生哥特勒涡旋。扰动源有一个平面，上面有线性排列的圆柱形通道，交替通向两个体积可变的空腔。考虑了源的各种配置：单独的通道出口开口和在其上方的狭缝开口。数值模拟在 Solid Works Flow Simulation 软件包中进行，气体速度的实验测量通过 PIV 方法实现。实验结果表明，所开发的气源可在表面附近以 1 kHz 的频率产生振幅高达 2 m/s 的周期性速度波动。沿源表面法线方向的速度剖面在时间和空间上都接近正弦曲线。
A source of controlled nonstationary harmonic flow disturbances
The flow in the vicinity of the source of controlled harmonic non-stationary perturbations of a gas medium, applicable for generating Görtler vortices in a compressible boundary layer, is studied. The source has a flat surface with linearly arranged cylindrical channels, leading alternately to two cavities of variable volume. Various configurations of the source are considered: with separate channel outlet openings and with a slit opening above them. Numerical simulation is performed in the Solid Works Flow Simulation package, and experimental measurement of gas velocity is realized by the PIV method. The developed source is shown to create periodic velocity fluctuations with an amplitude of up to 2 m/s at a frequency of 1 kHz near the surface. The shapes of the profiles of velocity normal to the surface along the source are close to sinusoidal in both time and space.
期刊介绍：
The journal Thermophysics and Aeromechanics publishes original reports, reviews, and discussions on the following topics: hydrogasdynamics, heat and mass transfer, turbulence, means and methods of aero- and thermophysical experiment, physics of low-temperature plasma, and physical and technical problems of energetics. These topics are the prior fields of investigation at the Institute of Thermophysics and the Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences (SB RAS), which are the founders of the journal along with SB RAS. This publication promotes an exchange of information between the researchers of Russia and the international scientific community.
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