EXPERIMENTAL STUDY OF EVOLUTION OF CONTROLLED PERTURBATIONS IN A LONGITUDINAL VORTEX GENERATED IN A BOUNDARY LAYER ON A FLAT PLATE AT A MACH NUMBER M=2

被引：3
作者：
Kosinov, A. D. [1 ]
Piterimova, M. V. [1 ]
Shmakova, A. V. [1 ]
Semionov, N. V. [1 ]
Ermolaev, Yu. G. [1 ]
机构：
[1] Russian Acad Sci, Khristianovich Inst Theoret & Appl Mech, Siberian Branch, Novosibirsk, Russia
来源：
JOURNAL OF APPLIED MECHANICS AND TECHNICAL PHYSICS | 2023年 / 64卷 / 04期
基金：
俄罗斯科学基金会;
关键词：
supersonic flow; flat plate; boundary layer; weak shock waves; controlled perturbations; LAMINAR-TURBULENT TRANSITION; FLOW; WAVE;
D O I：
10.1134/S0021894423040119
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Results of experimental studies are applied to compare the spatiotemporal amplitude distributions of controlled fluctuations in a linear and a weakly nonlinear phase of the development of a wave train in a homogeneous and an inhomogeneous boundary layer on a flat plate at a Mach number M = 2. (The flow is inhomogeneous due to a longitudinal steady perturbation generated by a pair of weak shock waves. Controlled perturbations are generated locally from the surface at a fixed power of a high-frequency glow discharge inside the model.) It is revealed that the inhomogeneity of the flow changes the mechanism of interaction of subharmonic perturbations. It is shown that the spatial synchronism of fluctuations of subharmonic frequency is violated in the center of the wave train.
引用
收藏
页码：656 / 666
页数：11
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