采用数值试验方法,研究了二维气膜冷却燃烧室火焰筒的壁温分布,预估了来流速度、温度和吹风比对壁温及辐射对换热规律的影响。分析中,采用二元热流通量模型模拟辐射换热.用“K—ε”两方程模型描述紊流特性,用壁面函数法修正处于流场内部的固壁。 The numerical simulation is used to study the wall temperature distribution in a two-dimensional gas-fired combustion chamber, and the effect of flow velocity, temperature and blowing ratio on wall temperature and radiation heat transfer is estimated. In the analysis, a dual heat flux model was used to simulate the radiative heat transfer, and the turbulence characteristics were described by the “K-ε” two-equation model, and the wall function was used to correct the solid wall inside the flow field.