【摘要】 本文利用“涡量”-“流函数”法求解流场,用R-ε双方程模拟湍流,用Monte-Carlo法模拟辐射传热,燃料燃烧采用简单的燃料和氧气不能共存的单步无限快反应模型.其结果与直径为φ2.29m的常压原油加热炉的标定数据比较,烟气温度场的平均误差为8.89%,流场和另文用射流模型计算的结果相似.更多还原

【Abstract】 In this paper, a complex turbulent flow with reaction in the combustion chamber of a cylindrical furnace is studied by "vorticity-stream function" method, together with the popular k-ε two-equation turbulent model. The Monte Carlo method is used to model the radiative heat transfer. The combustion model postulates a physically controlled, one step reaction with fuel and oxygen not coexisting at the same location. Calculated results are compared with the measured data of a petroleum atomospheric heater whose diameter is φ2.29m. The average error of the temperature field of flue gas is 8.89%. The calculated flow pattern is similar with the result by using jetted model.更多还原