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背向台阶流动的大尺度涡旋结构

Release Time:2019-03-11  Hits:

Indexed by: Conference Paper

Date of Publication: 2013-08-19

Page Number: 142-142

Key Words: 射流控制器;涡旋结构;脉动特性;面压;涡量;剪切层;外部激励;其在;

Abstract: 通过实验的方法对背向台阶流场的脉动特性进行全面分析,尤其是其在零质量射流控制器的不同频率扰动下的发展状态。在低频外部激励下,流动出现较大摆动,该摆动在壁面附近造成较大涡量变换区域,带来非常大的壁面压强变化。而在高频扰动下,剪切层旋涡强度增强了,但旋涡距离壁面较远,故对壁面压强变化影响不大。

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