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中文摘要：
提出并建立了丙烷湍流四步反应的温度脉动简化概率密度函数模型．应用该模型对旋流燃烧室内的丙烷湍流燃烧进行了数值模拟．计算中分别采用了Kiehne和Jones的两种丙烷四步反应机理．结果表明，基于Kiehne机理可得到与实验相符合的气体轴向与切向速度，轴向脉动速度均方根值和温度，以及氧气、二氧化碳、丙烷、一氧化碳与氢气体积分数的分布．
英文摘要：
A presumed probability density function （PDF） model for temperature fluctuation is proposed and formulated in this paper to simulate propane turbulent four-step reaction, which model is employed to numerically simulate propane turbulent combustion in a swirl combustor. Two four-step reaction mechanisms for propane combustion proposed by Kiehne and Jones, respectively are adopted in the simulation. The comparison shows that the calculation results based on the Kiehne mechanism agree with the experimental data in terms of distributions of gas axial and tangential velocities, axial fluctuating velocity, temperature, oxygen, carbon dioxide, propane, carbon monoxide and hydrogen concentrations.
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