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本文假设简单流场和一步化学反应机理,采用渐进分析法计算了三种特定的拉伸或曲面预混火焰(平面火焰、管式火焰和球面火焰)的火焰速度和火焰温度。火焰速度和火焰温度可以通过两个耦合的非线性代数方程用简单的数值方法求解。基于火焰曲面效果的物理分析,将得到的分析结果拓展到一般曲面火焰,给出了曲面拉伸火焰的火焰速度和火焰温度的曲率效果关联式。通过关联式对平面拉伸火焰的参数进行修正,可以得到任意曲面拉伸火焰的火焰速度和火焰温度。
In this paper, simple flow field and one-step chemical reaction mechanism are assumed. The flame velocities and flame temperatures of three specific pre-mixed flames (flat flame, tube flame and spherical flame) are calculated by the method of progressive analysis. Flame velocity and flame temperature can be solved by simple numerical methods using two coupled nonlinear algebraic equations. Based on the physical analysis of the flame surface effect, the analysis results are extended to the general surface flame, and the correlation between the flame velocity and the curvature effect of the flame temperature is given. By correlating the parameters of the planar drawing flame, the flame speed and the flame temperature of the drawing flame with arbitrary curved surface can be obtained.