| 旋风分离器上部空间各种二次涡的数值模拟 |
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| 引用本文： | 薛晓虎,魏耀东,孙国刚,时铭显.旋风分离器上部空间各种二次涡的数值模拟[J].工程热物理学报,2005,26(2):243-245. |
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| 作者姓名： | 薛晓虎 魏耀东 孙国刚 时铭显 |
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| 作者单位： | 石油大学(北京)化工学院,北京,102249;石油大学(北京)化工学院,北京,102249;石油大学(北京)化工学院,北京,102249;石油大学(北京)化工学院,北京,102249 |
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| 摘 要： | 采用改进的雷诺应力模型对旋风分离器上部环形空间内的强旋湍流流动进行了数值模拟,重点分析了顶板和升气管附近的局部二次涡。数值模拟结果与实验对比表明雷诺应力模型对环形空间内的强旋流动有良好的预报精度。旋风分离器上部环形空间不仅在顶板下存在有二次涡,而且在升气管外壁附近还存在有局部二次涡,局部二次涡的尺度比较小,而且沿周向有变化,呈现非轴对称分布。
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| 关 键 词： | 旋风分离器 数值模拟 二次涡 局部二次涡 |
| 文章编号： | 0253-231X(2005)02-0243-03 |
| 修稿时间： | 2004年11月24 |
NUMERICAL SIMULATION ON THE SECONDARY EDDIES IN THE UPPER SPACE OF A CYCLONE SEPARATOR |
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| XUE Xiao-Hu,WEI Yao-Dong,SUN Guo-Gang,SHI Ming-Xian.NUMERICAL SIMULATION ON THE SECONDARY EDDIES IN THE UPPER SPACE OF A CYCLONE SEPARATOR[J].Journal of Engineering Thermophysics,2005,26(2):243-245. |
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| Authors: | XUE Xiao-Hu WEI Yao-Dong SUN Guo-Gang SHI Ming-Xian |
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| Abstract: | The Reynolds Stresss Model (RSM) was selected to simulate the strongly swirling turbulent flow in the annular space of a cyclone separator. Predictions with Reynolds Stresss Model (RSM) are in reasonable agreement with the experimental results, and it reveals that the RSM is suitable for indicating the flow of cyclone separators. The numerical results show that there are secondary eddies and local-secondary eddies near the roof of the annular space and the outwall of the outlet tube. Local-secondary eddies are small in scale, variable in strength, and non-axisymmetric around the cycle. |
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| Keywords: | cyclone separator numerical simulation secondary eddies local-secondary eddies |
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