| 大速差射流预燃室内三维回流两相湍流的数值模拟 |
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| 引用本文： | 黄晓晴,陈立红,周力行.大速差射流预燃室内三维回流两相湍流的数值模拟[J].力学学报,1990(1). |
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| 作者姓名： | 黄晓晴 陈立红 周力行 |
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| 作者单位： | 清华大学工程力学系
(黄晓晴，陈立红)，清华大学工程力学系(周力行) |
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| 摘 要： | 本文由多流体两相流模型、气相湍流κ-ε模型和颗粒湍流代数模型出发,成功地模拟了真实形状大速差射流预燃室中三维湍流回流两相流动,得到了这类复杂的气固两相流中不同纵横截面上气相速度场、颗粒速度场及浓度场和两相湍流度场的分布,并且获得了与实验定性一致的合理结果,揭示了预燃室中气固两相流动与混合的主要物理特征,探讨了大速差射流技术稳焰和强化燃烧的两相流动机理。
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| 关 键 词： | 大速差射流 多流体模型 颗粒湍流 局部追随理论 |
NUMERICAL MODELING OF THREE-DIMENSIONAL TURBULENT RECIRCULATING GAS-PARTICLE FLOWS IN A COMBUSTOR OF CO-FLOW JETS WITH LARGE VELOCITY DIFFERENCE |
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| Huang Xiaoqing,Chen Lihong and Zhou Lixing.NUMERICAL MODELING OF THREE-DIMENSIONAL TURBULENT RECIRCULATING GAS-PARTICLE FLOWS IN A COMBUSTOR OF CO-FLOW JETS WITH LARGE VELOCITY DIFFERENCE[J].chinese journal of theoretical and applied mechanics,1990(1). |
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| Authors: | Huang Xiaoqing Chen Lihong and Zhou Lixing |
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| Abstract: | The three-dimensional turbulent recirculating gas-particle flows in a combus-tor of co-flow jets with large velocity difference are simulated by the multi-fluid model and k-8 turbulence model. Predicted results of gas velocity, particle velocity and particle mass flux distributions are in qualitative agreement with experiments, and reveal the machanism of flame stabilization and combustion intensification in such combustors. The discrepancy between pre--dictions and experiments, especially ,in turbulence intensities, indicates the inadequacy of Hinze-Tchen's model for modeling particle turbulence. |
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| Keywords: | co-flow jets with large velocity difference gas-particle flows multi-fluid model |
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