双路圆柱型涡流管的数值模拟与试验研究  

Numerical Simulation and Experimental Research of Double-circuit Cylindrical Vortex Tube

作　　者：孙中圣[1] 邵春收[2] 李小宁[1] 

机构地区：[1]南京理工大学机械工程学院,南京210094 [2]北京航天长征飞行器研究所,北京100076

出　　处：《机床与液压》2010年第13期63-66,共4页Machine Tool & Hydraulics

摘　　要：建立双路圆柱形涡流管三维有限元物理模型,通过数值模拟获得其内部三维气体强旋流的流动状况;同时分别对双路涡流管内的切向速度、轴向速度和总温分布进行分析;并通过量纲分析与前人的实测结果进行对比,验证了双路涡流管数值模拟的正确性。在数值模拟基础上,通过仿真和实验分析了双路涡流管附加回路的直径、进气压力以及冷流率和喷嘴进气压力对制冷效应的影响,并与单路涡流管对比,得到了各参数对双路涡流管性能的影响规律。The three-dimensional finite model of the double-circuit vortex tube was constructed, and the three-dimensional flow field with strong swirl inside the tube was obtained. The distributions of tangential velocity, axial velocity and total temperature were respectively analyzed. The correctness of the numerical simulation was validated through the non-dimensional comparisons between numerical results and previous data. By simulation and experiment methods, the effects of parameters such as the diameter and additional inlet pressure of additional circuit, cold fraction and inlet pressure of nozzle on the refrigeration effect were analyzed, and its performance was compared with that of the single-circuit vortex tube. The influence rules of parameters above mentioned were concluded.

关 键 词：双路涡流管 能量分离 制冷效应 

分 类 号：TK124[动力工程及工程热物理—工程热物理]