| 填充有多孔介质的T型通道内冷热流体混合过程的大涡模拟 |
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| 引用本文： | 卢涛,成鹏飞,朱维宇.填充有多孔介质的T型通道内冷热流体混合过程的大涡模拟[J].热科学与技术,2010,9(3). |
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| 作者姓名： | 卢涛 成鹏飞 朱维宇 |
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| 作者单位： | 北京化工大学机电工程学院; |
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| 摘 要： | 通过大涡模拟(large-eddy simulation,LES)对填充有烧结铜球多孔介质的T型通道内冷热流体混合过程的流动与传热情况进行了数值模拟,获得了混合区域内的瞬时温度和瞬时速度,通过时均值和均方根值来描述温度和速度的平均大小和波动程度。数值结果表明:在主管下游离多孔介质区域不远处的温度波动最为剧烈,在多孔介质的孔隙中流体速度波动最为剧烈。
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| 关 键 词： | 多孔介质 T型通道 混合过程 大涡模拟 |
Large-eddy simulation of process of mixing hot and cold fluids in T-junction with porous medium |
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| LU Tao,CHENG Peng-fei,ZHU Wei-yu.Large-eddy simulation of process of mixing hot and cold fluids in T-junction with porous medium[J].Journal of Thermal Science and Technology,2010,9(3). |
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| Authors: | LU Tao CHENG Peng-fei ZHU Wei-yu |
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| Affiliation: | LU Tao,CHENG Peng-fei,ZHU Wei-yu(School of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China) |
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| Abstract: | Mixing hot and cold temperature fluids in a T-junction with sintered copper balls porous medium was studied by large-eddy simulation.Transient temperature and velocity in mixing zone were obtained.Time-averaged value and fluctuation amplitude both of temperature and velocity were described by defining time-averaged value and root-mean square value.Numerical results show that fluctuation of temperature is most fluctuated in downstream of main duct which is close to porous zone,and fluctuation of velocity is ... |
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| Keywords: | porous medium T-junction mixing large-eddy simulation |
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