基于涡流管的能量分离模拟研究
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摘要
文中基于能量基本方程分析引起能量分离的原因,利用FLUENT软件选用标准k-ε模型进行数值模拟,研究涡流管入口温度、压力以及冷气流率对其性能的影响规律。结果表明:在一定范围内,入口压力越大,涡流管能量分离效应越好;入口温度对涡流管能量分离效应的影响很小;冷气流率在0.16%时涡流管的制冷效果最好,冷气流率在0.75%时涡流管制热效果最好。
Analyzing the reasons of energy separation base on the fundamental equation of energy and using the standard k-ε model of FLUENT software to simulate the influence of the inlet temperature,pressure and cold flow rate on its performance. The results show that the larger the inlet pressure is,the better the energy separation effect of vortex tube is. The effect of inlet temperature on the energy separation effect of vortex tube is very small. The cooling efficiency of vortex tube is the best when the cold flow rate is 0. 16%,and the heating efficiency of vortex tube is the best when the cold flow rate is 0. 75%.
Analyzing the reasons of energy separation base on the fundamental equation of energy and using the standard k-ε model of FLUENT software to simulate the influence of the inlet temperature,pressure and cold flow rate on its performance. The results show that the larger the inlet pressure is,the better the energy separation effect of vortex tube is. The effect of inlet temperature on the energy separation effect of vortex tube is very small. The cooling efficiency of vortex tube is the best when the cold flow rate is 0. 16%,and the heating efficiency of vortex tube is the best when the cold flow rate is 0. 75%.
引文
[1]RANQUE G J.Method and apparatus for obtaining from a fluid under pressure two currents of fluid at different temperatures:US6477456[P].1934-03-21.
[2]HILSCH R.The use of the expansion of gases in a centrifugal field as a cooling process[J].Review Sciences Instruments,1947,18(2):108-113.
[3]丁永钢,侯予,熊联友.涡流管的应用[J].低温工程,2004(1):56-59.
[4]LAY J E.An experimental and analytical study of vortexflow temperature separation by superposition of spiral and axial flows[J].Transactions of the ASME Journal of Heat Transfer,1959,8:202-222.
[5]HINIZE R.Thermodynamics and fluid mechanics of RanqueHilsch vortex tube[D].Cambridge:University of Cambridge,1998.
[6]曹勇.小流量涡流管特性的理论与实验研究[D].杭州:浙江大学,2003.
[7]周少伟.涡流管能量分离模型及数值模拟研究[D].哈尔滨:哈尔滨工程大学,2007.
[2]HILSCH R.The use of the expansion of gases in a centrifugal field as a cooling process[J].Review Sciences Instruments,1947,18(2):108-113.
[3]丁永钢,侯予,熊联友.涡流管的应用[J].低温工程,2004(1):56-59.
[4]LAY J E.An experimental and analytical study of vortexflow temperature separation by superposition of spiral and axial flows[J].Transactions of the ASME Journal of Heat Transfer,1959,8:202-222.
[5]HINIZE R.Thermodynamics and fluid mechanics of RanqueHilsch vortex tube[D].Cambridge:University of Cambridge,1998.
[6]曹勇.小流量涡流管特性的理论与实验研究[D].杭州:浙江大学,2003.
[7]周少伟.涡流管能量分离模型及数值模拟研究[D].哈尔滨:哈尔滨工程大学,2007.