流体机械

2019, v.47;No.561(03) 37-41

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某冷却系统用三通调节阀内部湍流动能和耗散率分析
Analysis of Internal Turbulent Kinetic Energy and Dissipation Rate in Three-way Regulating Valve for a Cooling System

章茂森;李忠;靳淑军;陶国庆;范宜霖;
Zhang Maosen;Li Zhong;Jin Shujun;Tao Guoqing;Fan Yilin;State Key Laboratory of Compressor Technology,Anhui Province Key Laboratory of Compressor Technology,Hefei General Machinery Research Institute Co.,Ltd.;Hefei General Environmental Control Technology Co.,Ltd.;

摘要(Abstract):

为研究三通调节阀阀芯节流锥面对内部介质的流动影响,采用CFD软件对阀门内部湍流进行了三维数值模拟,探讨了典型工况下,阀芯节流锥面对阀门内部湍流动能和湍流耗散率的影响,分析发现节流锥面可大幅度降低上阀座在大开度范围内、下阀座在小开度范围内的湍流动能和耗散率,二者降幅达30%以上。所以,阀芯节流锥面可显著降低阀门内部湍流动能的损失以及湍流耗散率的扩散,有利于流动的稳定性和节能性。
In order to study the influence of the spool throttle cone of the three-way regulating valve on the internal medium flow,CFD software was used for three-dimensional simulation of turbulent flow in the valve. The effect of the spool throttle cone on the kinetic energy and the dissipation rate of turbulent flow inside the three-way regulating valve was discussed emphatically under the typical working conditions.Through analysis it was found that the throttling cone can greatly reduce both the kinetic energy and dissipation rate of turbulent flow on the upper seat within the range of large opening and on the lower seat within the range of small opening by more than 30%. Therefore,the throttling cone can significantly reduce the loss of kinetic energy of turbulent flow and the diffusion of dissipation rate of turbulent flow inside the three-way regulating valve,which is beneficial to the stability of flow and energy conservation.

关键词(KeyWords): 三通调节阀;节流锥面;数值模拟;湍流动能;湍流耗散率
three-way regulating valve;throttling cone;numerical simulation;turbulent kinetic energy;turbulence dissipation rate

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作者(Author): 章茂森;李忠;靳淑军;陶国庆;范宜霖;
Zhang Maosen;Li Zhong;Jin Shujun;Tao Guoqing;Fan Yilin;State Key Laboratory of Compressor Technology,Anhui Province Key Laboratory of Compressor Technology,Hefei General Machinery Research Institute Co.,Ltd.;Hefei General Environmental Control Technology Co.,Ltd.;

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