The Influence of Incompressible Shear Layer Inflow Conditions on Mixing Layer Development

Mean velocity profiles with different stations of incompressible shear-layer flow experiments are used to analyze the effects of different inflow velocity profiles on the shear layer development. Mean velocity profiles with different stations vary from flow states and inflow velocity profiles, the results show that: inflow conditions dominate the development of shear layer. When shear layer have similar inflow velocity profiles, velocity profiles at the same station are similar before it fully developed. Inflow velocity profiles also influence the mixing layer development, velocity ratio or velocity differences between two streams change the minimum velocity of mixing layer and the flow direction position of full-developed region of shear layer.