An Experimental Investigation of the Supersonic Planar Mixing Layer with Finite Thickness

Abstract

Nanoparticle-based Planar Laser Scattering (NPLS) experiments were launched to get the fine structure of the supersonic planar mixing layer with finite thickness in the present study. Different from the turbulent development of supersonic planar mixing layer with thin thickness, the development of supersonic planar mixing layer with finite thickness is rapidly. The large-scale structures of mixing layer that possess the characters of quick movement and slow changes transmit to downriver at invariable speed. The transverse results show that the mixing layer is strip of right and dim and possess 3D characteristics. Results indicate that the higher the pressure of the high speed side, the thicker the mixing layer is. The development of mixing layer is restrained when the pressure of lower speed side is higher. The present study can make a contribution to the mixing enhancement.