2次元 直角空洞의 壁壓力 및 剝離 剪斷層의 特性 = Characteristics of Wall Pressure and Separated Shear Layer in the Two Dimensional Rectangular Cavity

다국어 초록 (Multilingual Abstract)

The pressure distribution on the 2-dimentional rectangular cavity wall and the velocity of the separated turbulent shear layer are measureed by varying the cavity depth and Raynols number based on cavity width and freestream velocity. The behavior of the pressure distribution on the wall is characterized by the lower pressure near the center of walls and bottom and the high pressures at the corner, as well as the hightest pressure at the reattachment corner. Based upoon the experimentally measured velocity profile the intergral constants of the analytical jet flow are determined, and found that the upstream free shear layer may be assumed as plane jet and its velocity can be predicted by Prandtl's mixing length theory. The autospectrum in the separated shear layer follows the-5/3 power law generally not depending upon the cavity depth and Reynolds number(Re).