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| Optimization of the liquid-ring pump case based on DFFD method |
| ZHANG Renhui1,2*, LIANG Meng1, YANG Junhu1,2, LI Rennian1,2, MEGN Fanrui3 |
| 1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, Gansu 730050, China; 2.Key Laboratory of Fluid Machinery and Systems, Gansu Province, Lanzhou University of Technology, Lanzhou, Gansu 730050, China; 3.Zibo Water Vacuum Pump Factory Co.Ltd., Zibo, Shangdong 255200 |
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Abstract To optimize the liquid-ring pump case, the response surface method based on the direct free-form deformation(DFFD)was proposed. The case profile of liquid-ring pump was parameterized precisely using the direct free-form deformation method. The design of experiment was carried out in the control variables space. The gas-liquid flow in the liquid-ring pump was simulated by using VOF multiphase model. The optimization analysis of the pump case profile was based on the response surface method, and the response relationship between the case profile of liquid-ring pump and the corresponding inlet vacuum pressure and efficiency was established. The inlet vacuum pressure and the pump efficiency of the liquid-ring pump were optimized respectively. The calculation case shows that the pump case profile has a great effect on the hydraulic performance of the liquid-ring pump. The pump efficiency and inlet vacuum pressure can be improved within a certain range. The pump case profile with a higher area expansion ratio for the suction zone would result in the higher inlet vacuum pressure, and the pump efficiency is on the contrary. With the increase of pump inlet vacuum, the pump efficiency shows an approximately linear decreasing in the design variable space.
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Received: 14 November 2016
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| [1]袁丹青, 王航, 丛小青,等. 径向力对螺旋离心泵转子系统动力学响应的影响[J]. 江苏大学学报(自然科学版), 2018, 39(3):290-295. YUAN Danqing,WANG Hang,CONG Xiaoqing, et al. Effect of radial force on dynamic response of screw centrifugal pump rotor system[J].Journal of Jiangsu University(natural science editions), 2018, 39(3): 290-295.(in Chinese)[2]TETERYUKOV V I. Effect of body shape on perfor-mance of water-ring vacuum pumps [J].Chemical and petroleum engineering,1966,2(8): 511-513.[3]KAKUDA K, USHIYAMA Y, OBARA S, et al. Flow simulations in a liquid ring pump using a particle me-thod[J]. Computer modeling in engineering & sciences, 2010, 66(3):215-226.[4]KARAGANOV L T. Some parameters of liquid-ring compressors[J]. Chemical and petroleum engineering, 1969,5(5): 362-367.[5]黄苗苗,李国君,匡晓峰.水环真空泵内部气液两相流动的数值分析[J].船舶力学, 2011,15(7): 722-729. HUANG Miaomiao,LI Guojun, KUANG Xiaofeng. In water ring vacuum pump gas-liquid two phase flow of numerical analysis [J]. Journal of ship mechanics, 2011, 15(7):722-729.(in Chinese)[6]张人会, 郭广强, 杨军虎,等. 液环泵内部气液两相流动及其性能分析[J]. 农业机械学报, 2014, 45(12):99-103. ZHANG Renhui, GUO Guangqiang, YANG Junhu,et al. In the liquid ring pump gas liquid two phase flow and its performance analysis [J]. Transactions of CSAM, 2014, 45(12):99-103.(in Chinese)[7]HSU W M, HUGHES J F, KAUFMAN H. Direct manipulation of free-form deformations[J]. Acm siggraph computer graphics, 1992, 26(2):177-184. |
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