关键词: 边界层, 分离点, 表面压力分布, 微型压力传感器阵列, 柔性衬底, 实时在线测量

Abstract: In order to detect the point of boundary layer separation, a measuring method based on the change of surface pressure distribution is discussed, and a design of flexible substrate based micro pressure sensor array is also proposed. This array can achieve real-time online measuring while meeting the measuring requirement of non-planar surface. The paper studies a determination method used to detect separation point and proves its validity through a flow simulation of 2D column. The introduction of micro pressure sensor array expands ways detecting boundary layer separation point.

Key words: boundary layer, separation point, surface pressure distribution, micro pressure sensor array, flexible substrate, real-time online measuring