冲压发动机燃烧室三维流场数值模拟

采用有限体积法和S IM PLE算法对带V型火焰稳定器的冲压发动机燃烧室流场进行了数值模拟。目的是通过数值模拟得到燃烧室的流场,加以研究,指导实验。计算是在笛卡尔坐标系下进行的,计算中采用标准二方程湍流模型、EDM(Eddy-D issipation-M odal)燃烧模型和P-1辐射模型。得到了燃烧室流场的特征,并讨论了多种因素变化对流场的影响。结果表明,各种因素变化对燃烧室流场有较大的影响。

Numerical Simulation of Three-Dimensional Flows in a Ramjet Combustor

The incompressible flow in a ramjet combustion chamber with a V flame stabilizer was numerically simulated.It was aimed at determining the flow field in the combustor through numerical simulation and give help to experiments.The calculation was performed in Cartesian co-ordinates.The finite volume method was employed to solve the N-S equations.The SIMPLE algorithm was used for the pressure-velocity coupling.The standard two equations model,the EDM model,and the P-1 model were employed as the computational models.The feature of the field was discussed;especially the effects on the flow field by the variation of different factors were discussed.The results show that the variation of different factors has important influence on flow field.