关键词: 喷管气流;三维流;偏转;数值模拟

Abstract: A numerical simulation of forced deflection nozzle has been accomplished successfully. The vector flux splitting method developed by Van Leer is used to spatial discretization of convective and pressure terms, the viscous terms are handled using finite volume equivalent of 2nd order accurate central differences. A special treatment is made in outlet boundary in which the subsonic and supersonic flow exist commonly.Block-Line-Gauss-Siedel method is used to solve thd differencing equations. The conputational results proved that the forced deflection nozzle has the ability to compensate the variation of environmental pressure automatically and are correlated well the experimental results.

Key words: Nozzle gas flow;Three dimensional flow;Deflection;Numerical simulation