Effects of nozzle location on new type annular jet pump performance
Xu Maosen1,2, Long Xinping1,2, Yang Xuelong1,2, Wu Wei1,2, Wang Xiaochuan1,2, Wang Xueying1,2
1.School of Power and Mechanical Engineering, Wuhan University, Wuhan, Hubei 430072, China; 2.Key Laboratory of Hubei Pro-vince for Water Jet Theory & New Technology, Wuhan, Hubei 430072, China
Abstract:A numerical simulation method was utilized to explore effects of nozzle location on perfor-mance of a new type annular jet pump(NTAJP). NTAJP has a newly-designed annular nozzle in which an annular jet is off the pump suction chamber wall and totally immerged in the sucked liquid compared with the conventional annular nozzle that the annular jet is along the chamber wall only. The NTAJP performance was numerically predicted and compared with the conventional pump. Effects of nozzle location on the performance were analyzed under different central suction nozzle-to-outer annular nozzle velocity ratios(vr). It was shown that NTAJP generally has better efficiency than the conventional one. The annular nozzle located at 8 mm away from the suction chamber wall has the best performance. For the NTAJP with the nozzle at 4 mm and 6 mm away from the wall respectively, the best vr is 1/1 when the flow ratio is ranged in 0.4-0.8. For the NTAJP with the nozzle at 8 mm away from the wall, however, the best vr is 3/1 in the same flow ratio range.
徐茂森,, 龙新平,, 杨雪龙,, 吴伟,, 王晓川,, 王雪颖,. 喷嘴位置对新型环形射流泵性能的影响[J]. 排灌机械工程学报, 2014, 32(7): 563-566.
Xu Maosen,, Long Xinping,, Yang Xuelong,, Wu Wei,, Wang Xiaochuan,, Wang Xueying,. Effects of nozzle location on new type annular jet pump performance. Journal of Drainage and Irrigation Machinery Engin, 2014, 32(7): 563-566.
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