分层介质中的绕楔边界层混合对流研究

he steady mixed convection boundary-layer flow adjacent to a symmetrical wedge in a stablestratified medium is investigated. An similarity solution if found to be in existence with the assumptions that the surface and the ambient temperature are proportional to x 2m-1 from the leading edge of the surface. A further analysis shows that the similarity method is only valid for m=1/2. Besides, analytical approximationswith high accuracy are given and then match by the numerical techniques. Further, it is found that the homotopy-pade approximations are independent on the auxiliary parameters in HAM theory. Besides, the effects of important physical parameters such as λ, Pr and S on the flow are investigated. It is foundthat the thermal stratification delays the fluid motion in the boundary-layer.