CAJ | 학술논문

为了研究壁面温度对来流脉冲扰动下高超音速流动的影响，采用高阶有限差分格式数值模拟了绝热壁和3种等温壁条件下高超音速来流扰动非定常流场，并应用Fourier频谱分析讨论了不同壁温条件下扰动波在边界层的发展过程。结果表明，壁温对脉冲波作用下流场的影响主要集中在边界层，而对远离壁面的流场影响较小，壁温不同表面密度和摩擦系数分布有明显的差异。同时，壁温条件对脉冲波作用下的高超音速边界层扰动波的发展有着显著地影响。
위료연구벽면온도대래류맥충우동하고초음속류동적영향，채용고계유한차분격식수치모의료절열벽화3충등온벽조건하고초음속래류우동비정상류장，병응용Fourier빈보분석토론료불동벽온조건하우동파재변계층적발전과정。결과표명，벽온대맥충파작용하류장적영향주요집중재변계층，이대원리벽면적류장영향교소，벽온불동표면밀도화마찰계수분포유명현적차이。동시，벽온조건대맥충파작용하적고초음속변계층우동파적발전유착현저지영향。
In order to research the effects of wall temperature on the hypersonic flow under the action of pulse dis-turbance, the unsteady flow field on hypersonic stream disturbance under three isothermal walls and adiabatic wall was simulated by the high-order finite difference format value. In addition, Fourier frequency spectral analysis ( FF-SA) was applied for discussing the development process of disturbance waves in the boundary layer under different wall temperature conditions. The results show that, the effects of wall temperature on the flow field under the action of pulse wave are mainly concentrated in the boundary layer, while it has a little effect on the flow field far away from the wall. The surface friction factor and density have apparent differences at different wall temperatures. Fur-thermore, wall temperature conditions have a significant influence on the development of disturbance waves in the hypersonic boundary layer under the action of pulse wave.