超声速气流中氢气燃料喷流的数值模拟研究

从可压缩流动的多组分湍流Ｒｅｙｎｏｌｄｓ 平均ＮａｖｉｅｒＳｔｏｋｅｓ 方程出发，结合ＢａｌｄｗｉｎＬｏｍａｘ 的代数湍流模型，采用高精度的差分方法进行数值求解．数值研究了燃烧室（矩形管道和矩形扩张管道）内氢气燃料喷流（下壁面横向喷流和流向顺流喷射）和超声速空气主流相互作用的三维流场结构，以及燃气的对流、扩散输运过程在燃烧室内的浓度空间分布特性．

Numerical Study on Hydrogen Injection in Supersonic Flow

A study on hydrogen injection in supersonic flow is performed by solving the three dimensional compressible Navier Stokes equations and the species transport equation with an algebraic eddy viscosity turbulent model developed by Baldwin and Lomax. A high resolution scheme is employed to discretize the governing equations. In the present study, the complicated flow structure of the hydrogen jet along streamwise and transverse directions in supersonic flow in the combustion chamber is investigated. The effect of convection and diffusion on the hydrogen species distribution is also studied.