| 钝体后湍流预混燃烧的PDF模拟 |
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| 引用本文： | 葛海文,朱旻明,陈义良,王海峰,董刚.钝体后湍流预混燃烧的PDF模拟[J].工程热物理学报,2003,24(3):519-522. |
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| 作者姓名： | 葛海文 朱旻明 陈义良 王海峰 董刚 |
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| 作者单位： | 中国科学技术大学热科学和能源工程系,安徽,合肥,230027 |
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| 基金项目： | 华中科技大学煤燃烧国家藿点实验室973课题“燃煤污染防治的基础研究”(No.G1999022207) |
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| 摘 要： | 本文采用PDF方法对矩形燃烧室内钝体后的湍流预混火焰进行了数值模拟。脉动速度-频率-标量联合的PDF输运方程用Monte Carlo方法求解,质量、动量和能量的平均值由基于无结构网格的有限体积法求解,压力通过状态方程获得。PDF方程中所需的平均密度、平均速度和压力由有限体积法提供,并将用Monte Carlo方法求出的雷诺应力、化学反应源项和比热比传递给有限体积法。本文对丙烷和空气燃烧的不同简化化学反应机理进行了研究,并与实验结果进行比较,获得满意的结果。
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| 关 键 词： | 有限体积法 Monte Carlo方法 无结构网格 几率密度函数 钝体稳定火焰 |
| 文章编号： | 0253-231X(2003)03-0519-04 |
| 修稿时间： | 2002年11月1日 |
PDF SIMULATION OF PREMIXED TURBULENT REACTING FLOWS PAST A BLUFF BODY |
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| GE Hai-Wen ZHU Min-Ming CHEN Yi-Liang WANG Hai-Feng DONG Gang.PDF SIMULATION OF PREMIXED TURBULENT REACTING FLOWS PAST A BLUFF BODY[J].Journal of Engineering Thermophysics,2003,24(3):519-522. |
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| Authors: | GE Hai-Wen ZHU Min-Ming CHEN Yi-Liang WANG Hai-Feng DONG Gang |
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| Abstract: | The PDF method has been applied to investigate the premixed turbulent reactive flows past bluff-body in a rectangle combustor. The numerical simulation couples a Lagrangian Monte Carlo method to solve the joint "fluctuating velocity-frequency- composition" PDF transport equations with a finite-volume method on unstructured meshes to solve Reynolds averaged Euler equations and the mean equation of state. The Monte Carlo method is fed with the mean density, mean velocity and pressure by finite-volume method and provides all turbulence quantities and the chemical source terms in turn. Different chemical reaction mechanisms are used for the propane-air reacting flows. Comparisons are made between predictions and measurements of temperature profile. |
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| Keywords: | finite volume Monte Carlo unstructured mesh PDF method bluff-body stabilized flame |
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