何丽娟,李海燕,马文清,孙尚志,王淑旭
He Lijuan,Li Haiyan,Ma Wenqing,Sun Shangzhi,Wang Shuxu

• 1:内蒙古科技大学能源与环境学院

摘要(Abstract)：

以R41为工质对涡流管进行数值模拟,在最佳冷流率下分析了涡流管内部压力场、温度场以及流场的分布规律。模拟结果表明涡流管内部呈现明显的压力梯度和温度梯度及三维旋流流动状态,随着轴向距离的增加轴心区域压力逐渐增加而外缘区域压力逐渐减小,二者在轴向距离为60 mm后逐渐稳定为2.57 MPa;温度随着轴向距离的增加而增加,当轴向距离增加到50～60 mm时温度逐渐稳定在301 K左右;轴向速度方向存在明显的改变,并且随着轴向距离的增加转变程度逐渐降低,径向位置上随着压力差ΔP的增加轴向方向逐渐呈现逆流状态;切向速度随着轴向距离的增加逐渐减小,不同径向位置上切向速度随着压力的增加而增加。
The vortex tube was numerically simulated with R41 as the working fluid.The distribution of pressure field,temperature field and flow field inside the vortex tube was analyzed at the optimal cold flow rate.The simulation results show that the vortex tube exhibited obvious pressure gradient and temperature gradient and three-dimensional swirl flow state.As the axial distance increased,the axial region pressure increased gradually and the outer edge region pressure gradually decreased.After the axial distance was 60 mm,both were gradually stabilized at 2.57 MPa.The temperature increased with the increase of the axial distance.When the axial distance was increased to 50～60 mm,the temperature was gradually stabilized at about 301 K.There was a significant change in the axial velocity direction,and as the axial distance increased,the degree of transition gradually decreased.At the radial position,the axial direction gradually appeared countercurrent with the increase of the pressure difference ΔP.The tangential velocity decreased with increase of axial distance,and the tangential velocity increased with increase of pressure at different radial positions.

关键词(KeyWords)： 数值模拟;涡流管;压力场;温度场;流场
numerical simulation;vortex tube;pressure field;temperature field;flow field

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51566014)

作者(Author): 何丽娟,李海燕,马文清,孙尚志,王淑旭
He Lijuan,Li Haiyan,Ma Wenqing,Sun Shangzhi,Wang Shuxu

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