基于热力学理论的涡流管制冷特性研究
Study on refrigeration characteristics of vortex tube based on thermodynamics
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摘要: 为探究热力学理论对应用于创造矿下人工环境的涡流管制冷特性的影响，基于涡流管的能量交换和分离的原理，利用热力学第一定律和热力学第二定律的理论，分析涡流管内部流体热力学特性，探求冷、热流体能量分离机理，获得其制冷特性；利用三维的流体域耦合方法，建立的连续-非连续模型，通过不同数学模型和不同计算方法的计算，与Aljuwayhel的实验结果进行对比，以制冷效应差异作为判定指标，确定了使用SIMPLEC算法实现压力和速度耦合变量的分离求解，采用各向异性的雷诺应力RSM湍流模型最为精准，计算得到制冷效应偏差在12%以内；涡流管内流场的分析可知，管内的流体速度、流体压力、温度流场分布与基于热力学设计的理论基本相符，模拟的管内内部流体温度分离引起的静温变化是由流体热量和功转换所引起的结论，验证了涡流管内部能量传递过程。Abstract: In order to explore the influence of thermodynamic theory on the cooling characteristics of vortex tube control used to create artificial environment in mine, based on the first and second laws of thermodynamics are adopted to analyze the thermodynamic characteristics of fluid in vortex tube, the energy separation mechanism are explored, and the refrigeration characteristics are obtained. Using the three-dimensional fluid domain coupling method, the continuous-discontinuous model is established. Through the calculation of different mathematical models and different calculation methods, it is compared with the experimental results of Aljuwayhel. With the difference of refrigeration effect as the judgment index, the separation of pressure and velocity coupling variables is determined using the SIMPLEC algorithm. The anisotropic Reynolds stress RSM turbulence model is the most accurate, and the deviation of refrigeration effect is calculated within 12%. The analysis of the flow field in the vortex tube shows that the distribution of fluid velocity, fluid pressure and temperature flow field in the tube is basically consistent with the theory based on thermodynamic design. The simulation conclusion that the static temperature change caused by fluid temperature separation in the tube is caused by fluid heat and work conversion verifies the energy transfer process in the vortextube.
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[1] RANQUE G J. Method and apparatus for obtaining from a fluid under pressure two currents of fluid at different temperature: United States, 1952281[P]. 1924-03-27. [2] HILSCH R. The use of the expansion of gases in a centrifugal field as cooling process[J]. The review of scientific instruments, 1947, 18（2）: 108-113. [3] FULTON C D. Ranque’s tube[J]. ASRE Refrigerating Engng, 1950, 58（1）: 473-479. [4] SCHEPER G W. The vortex tube-internal flow data and a heat transfer theory[J]. ASRE Refrigerating Engng, 1951, 59（1）: 985-989. [5] HARTNETT J P, ECKERT ERG. Experimental study of the velocity and temperature distribution in a high-velocity vortex-type flow[J]. Heat Transfer and Fluid Mechanics Institute, 1956（1）: 135-150. [6] KUROSAKA M. Acoustic Streaming in Swirling Flow and the Ranque-Hilsch（Ｖｏｒｔｅｘ－Ｔｕｂｅ） Effect[J]. Journal of Fluid Mechanics, 1982, 124（1）: 139-154. [7] AHLBORN B, GROVES S. Secondary flow in a vortex tube[J]. Fluid Dynamics Research, 1997, 21（2）: 1-9. [8] 唐玉立，王亚芳，孙大坤，等．涡流管制冷的喷嘴效应[J]．低温工程，1997（6）：21－28. TANG Yuli, WANG Yafang, SUN Dakun, et al. The nozzle effect of vortex tube refrigeration[J]. Cryogenics, 1997（6）: 21-28.
[9] 唐玉立，王亚芳，孙大坤，等．涡流管制冷的涡流室制冷效应[J]．低温工程，1998（3）：43－59. TANG Yuli, WANG Yafang, SUN Dakun, et al. Refrig-eration effect of vortex device in vortex tube[J]. Cryogenics, 1998（3）: 43-59.
[10] 蔡洁，姜任秋，周少伟，等．涡流管能量分离过程实验研究[J]．工程热物理学报，2005（Ｓ1）：1－4. CAI Jie, JIANG Renqiu, ZHOU Shaowei, et al. An experimental investigation of energy separation process in vortex tube[J]. Journal of Engineering Thermophysics, 2005（Ｓ1）: 1-4.
[11] 周少伟，姜任秋，宋福元，等．涡流管内流动与传热数值模拟[J]．化工学报，2006，57（7）：1553－1557. ZHOU Shaowei, JIANG Renqiu, SONG Fuyuan, et al. Numerical simulation of flow field and heat transfer within a vortex tube[J]. Journal of Chemical Industry and Engineering(China), 2006, 57（7）: 1553-1557.
[12] 曹勇，齐延峰，刘加永，等．涡流管热力学方法的研究[J]．低温工程，2003（3）：12－16. CAO Yong, QI Yanfeng, LIU Jiayong, et al. Thermody-namic analysis of the RANQUE-HILSCH vortex tube[J]. Cryogenics, 2003（3）: 12-16.
[13] 王朋涛，姜任秋，宋福元，等．涡流管性能的热力学火用分析[J]．低温与超导，2006，34（4）：263－267. WANG Pengtao, JIANG Renqiu, SONG Fuyuan, et al. Energy analysis on the performance of vortex tube[J].Cryogenic & Supercon, 2006, 34（4）: 263-267.
[14] ALJUWAYHEL N F, NELLIS G F, KLEIN S A. Parametric and internal study of the vortex tube using a CFD model[J]. International Journal of Refrigeration, 2005, 28（3）: 442-450. [15] 李玲琦，邵雪，李承霖．涡流管制冷技术应用研究与发展综述[J]．节能，2021，40（5）：66－70. LI Lingqi, SHAO Xue, LI Chenglin. Review of the vortex tube refrigeration technology[J]. Energy Conservation, 2021, 40（5）: 66-70.
[16] 谢龙汉，赵新宇，张炯明．ＡＮＳＹＳ ＣＦＸ流体分析及仿真[Ｍ]．北京：电子工业出版社，2012. [17] 韩占忠．ＦＬＵＥＮＴ：流体工程仿真计算实例与分析[Ｍ]．北京：北京理工大学出版社，2009. [18] 克里斯托夫·巴伊，热纳维耶芙·孔特·贝洛．湍流[Ｍ]．北京：国防工业大学出版社，2018．
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