%0 Journal Article
%T 小管径涡流管三维数值模拟及热力学过程分析<br>3D Numerical Simulation and Analysis of Thermodynamic Process of Small-diameter Vortex Tube
%A 李龙
%A 何望云
%A 李言
%A 杨明顺
%A 袁启龙
%J 机械科学与技术
%D 2016
%X 为了探究小管径涡流管的工作机制,建立了其内流场的三维数值计算模型,并采用Standard k-ε湍流模型进行了数值模拟。根据数值计算所得结果,结合工质的流动特点,将其内部流动过程分为三个特征区域,分析各区域所得相关物理量的分布情况,给出了小管径涡流管工作过程中工质的热力学变化过程,同时通过对比实验和模拟所得的出入口数据,验证了所用数值模拟方法的可行性。以此对小管径涡流管工质及温度的分离现象做出一定解释。<br>To explore the work mechanisms of a small-diameter vortex tube, this study establishes the three-dimensional numerical simulation model of its internal flow field and carries out its numerical simulation with the standard k-ε turbulence model. According to the numerical simulation results, the internal flow field is divided into three characteristic regions that combine the flow characteristics of the work medium. The analysis of the distribution of each parameter produces the thermodynamic process of the work medium in the small-diameter vortex tube. The comparison of the simulation results with the experimental data on the inlet and outlet of the small-diameter vortex tube proves that our simulation method is feasible. Therefore it helps us to explain the work medium and temperature separation in the small-diameter vortex tube and optimize the small-diameter vortex tube
%K 涡流管
%K 数值模拟
%K 热力学过程&lt
%K br&gt
%K internal flow field
%K numerical simulation
%K small-diameter vortex tube
%U http://journals.nwpu.edu.cn/jxkxyjs/CN/abstract/abstract6387.shtml