Abstract:The numerical simulation of interior flow field in self-priming pump under different working conditions was conducted on the platform of Fluent. Three- dimensional non-structural tetrahedral mesh and the SIMPLEC method were applied according to the time-averaged Navier-Stokes equation and standard k-ε turbulent model. The velocity and pressure distributions of the interior flow field of volute and impeller were obtained and analyzed, which revealed the flow principle inside the pump in the process of self-priming. Both the head and efficiency of the pump predicted were compared with that of tested. The results show that the pressure on blade pressure side is larger than that on the suction one at the same radius, both high pressure gradient and high velocity gradient appear at the reflux hole, and vortices with different sizes are formed due to the influence of separation chamber sidewall. The characteristic performance curves by numerical simulation basically agree with that by test.
李红,王涛. 自吸泵内部流场的数值模拟及性能预测[J]. 排灌机械工程学报, 2010, 28(3): 194-197.
Numerical simulation of interior flow and performance prediction for self-priming pump. Numerical simulation of interior flow and performance prediction for self-priming pump. Journal of Drainage and Irrigation Machinery Engin, 2010, 28(3): 194-197.
[1]郭晓梅,杨敏官,王春林.自吸泵现状分析[J].水泵技术,2002(1):27-29.Guo Xiaomei,Yang Minguan,Wang Chunlin. Analysis of the present status of selfpriming pump[J]. Pump Technology, 2002(1):27-29.(in Chinese)[2]吕智军,兰才有,王福军.自吸泵研究现状及发展趋势[J].排灌机械,2005,23(3):1-5.Lü Zhijun, Lan Caiyou, Wang Fujun. The present status and development of self-priming pump[J]. Drainage and Irrigation Machinery, 2005, 23(3): 1-5.(in Chinese)[3]Zhou Weidong, Zhao Zhimei, Lee T S, et al. Investigation of flow through centrifugal pump impellers using computational fluid dynamics[J]. International Journal of Rotating Machinery, 2003, 9(1): 49-61.[4]Hao Yu, Jorma Kivilathti. CFD modeling of the flow field inside a reflow oven[J].Soldering and Surface Mount Technology, 2002, 14(1): 38-44.[5]王福军.计算流体动力学分析[M]. 北京:清华大学出版社,2004:215-216.[6]王瑞金,张凯,王刚. Fluent技术基础与应用实例[M].北京:清华大学出版社, 2007.[7]王春林,司艳雷,郑海霞,等.旋流自吸泵内部流场的数值模拟[J].排灌机械,2008,26(2):31-35.Wang Chunlin, Si Yanlei, Zheng Haixia,et al. Numerical simulation of rotational interior flow in self-priming pump[J]. Drainage and Irrigation Machinery, 2008, 26(2): 31-35.(in Chinese)[8]Rudolf Schilling, Moritz Frobenius. Numerical simulation of the two-phase flow in centrifugal pump impellers[C]∥Proceedings of 2002 ASME Joint US-European Fluids Engineering Conference. Canada, Montreal:[s.n.], 2002:14-18.[9]Poullikkas A. Two-phase flow performance of nuclear reactor cooling pumps[J]. Progress in Nuclear Energy, 2000,36(2):123-130.[10]Poullikkas A. Effects of two-phase liquid-gas flow on the performance of nuclear reactor cooling pumps[J]. Progress in Nuclear Energy, 2003, 42(1): 3-10.