| 摘 要： | In this paper, we obtain a third-order approximate solution for the laminar boundarylayer between two plans perpendicular to each other.In boundary layer equations, the viscous and the inertial terms have the same quantitystep.In this paper, at first, supposing that the inertial terms are bigger than the viscousterms, we solve the boundary layer equations, and then we suppose that the viscous termsare bigger than the inertial terms. At last. we take the mean value as the valid solution of theboundary layer equations.The first-and the second-order approximate solutions obtained in this paper coincdewith the results in ref1],while the third-order solution obtained in this paper is better thanthat in ref 1].
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