非接触式余弦转子泵及流场数值分析
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摘要
为研究非接触式余弦转子泵内部流场变化情况,利用Fluent软件中动网格技术、RNGk-ε模型和PISO算法对非接触式余弦转子泵的内部流场进行非定常数值模拟。通过对泵进行模拟,得到了泵内部流场的变化情况,泵内部的压力从出口处到进口处逐渐递减,在转子间隙处出现最小压力;泵腔内速度随着转速的增大而增大,在转子间隙处出现最大返流速度。泵吸液腔中的涡旋随着转子间间隙和出口工作压力的增大而增大,数量也随着增多,致使泵工作效率降低。
In order to study the internal flow field change of the non-contact cosine rotor pump,the internal flow field of the non-contact cosine rotor pump was simulated by using the dynamic grid technique,the RNGk-ε model and the PISO algorithm in the Fluent software.By simulating the pump,the internal flow field of the pump is changed.The pressure inside the pump gradually decreases from the outlet to the inlet,and the minimum pressure occurs at the rotor gap.The speed of the pump chamber increases with the increase of the rotational speed.The maximum return velocity occurs at the rotor gap.The vortex in the pump suction chamber and the number increases with the increase of the inter-rotor gap and the outlet working pressure,which bring about the lower pump working efficiency.
In order to study the internal flow field change of the non-contact cosine rotor pump,the internal flow field of the non-contact cosine rotor pump was simulated by using the dynamic grid technique,the RNGk-ε model and the PISO algorithm in the Fluent software.By simulating the pump,the internal flow field of the pump is changed.The pressure inside the pump gradually decreases from the outlet to the inlet,and the minimum pressure occurs at the rotor gap.The speed of the pump chamber increases with the increase of the rotational speed.The maximum return velocity occurs at the rotor gap.The vortex in the pump suction chamber and the number increases with the increase of the inter-rotor gap and the outlet working pressure,which bring about the lower pump working efficiency.
引文
[1]LUO S,WU Y,WANG J.The generation principle and mathematical models of a novel gear drive[J].Mechanism and Machine Theory,2012,43(12):1543-1556.
[2]WANG J,LUO S M,CHEN L F,et al.Analysis of transmission characteristics of cosine gear drive[J].Chinese Journal of Mechanical Engineering,2008,21(3):94-98.
[3]刘忠族,王秋波.凸轮转子泵的流场及脉动特性数值分析[J].排灌机械工程学报,2014,32(3):208-213.
[4]李昳,姜小军,钱浩海.黏度对凸轮转子泵效率影响的数值分析[J].排灌机械工程学报,2014,32(8):669-673.
[5]钱浩海,李昳.径向间隙对转子泵容积效率的影响[J].浙江理工大学学报,2013,30(5):698-702.
[6]胡华荣.外啮合余弦齿轮泵的特性研究[D].湘潭:湖南科技大学,2008.
[7]王福军.计算流体动力学分析——CFD软件原理与应用[M].北京:清华大学出版社,2004:113-125.
[8]钱浩海.基于流动分析的转子泵的优化选型[D].杭州:浙江理工大学,2013.
[9]张铁柱,张洪信,赵红.非接触式转子泵的设计与试验[J].农业机械学报,2013,33(3):39-41.
[10]张铁柱,张洪信,赵红.非接触式转子泵转子理论型线与实际型线设计[J].机械工程学报,2002,38(11):152-155.
[2]WANG J,LUO S M,CHEN L F,et al.Analysis of transmission characteristics of cosine gear drive[J].Chinese Journal of Mechanical Engineering,2008,21(3):94-98.
[3]刘忠族,王秋波.凸轮转子泵的流场及脉动特性数值分析[J].排灌机械工程学报,2014,32(3):208-213.
[4]李昳,姜小军,钱浩海.黏度对凸轮转子泵效率影响的数值分析[J].排灌机械工程学报,2014,32(8):669-673.
[5]钱浩海,李昳.径向间隙对转子泵容积效率的影响[J].浙江理工大学学报,2013,30(5):698-702.
[6]胡华荣.外啮合余弦齿轮泵的特性研究[D].湘潭:湖南科技大学,2008.
[7]王福军.计算流体动力学分析——CFD软件原理与应用[M].北京:清华大学出版社,2004:113-125.
[8]钱浩海.基于流动分析的转子泵的优化选型[D].杭州:浙江理工大学,2013.
[9]张铁柱,张洪信,赵红.非接触式转子泵的设计与试验[J].农业机械学报,2013,33(3):39-41.
[10]张铁柱,张洪信,赵红.非接触式转子泵转子理论型线与实际型线设计[J].机械工程学报,2002,38(11):152-155.