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| Noise Reduction by Actively Leaning Blades in Centrifugal Pump as Turbine |
| DAI Cuia，DONG Liangb，KONG Fanyub，BAI Yuxingb，XIA Binb
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| (a. School of Energy and Power Engineering； b. Research Center of Fluid Machinery Engineering
and Technology, Jiangsu University, Zhenjiang 212013, Jiangsu, China) |
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Abstract Abstract： To reduce the fluidinduced interior/exterior noise in centrifugal pump as turbine (PAT), from the relation between inphase hydrodynamic action and radiated noise, the leaned angle formula of blade in ideal condition was derived, and the noisereduction activecontrol approach was proposed, without affecting the hydraulic performance. The hydraulic performance and interior noise of two types of PATs were compared based on the experiments. After verifying the finite element model of the casing structure, the finite element method/automatically matched layer (FEM/AML) method was used to reduce the exterior noise. The results show that the leaned blade can keep the original hydraulic performance of PAT and reduce the peak value at fundamental frequency and the total sound energy. The efficiency at larger flow rates can be mostly improved by 1.09 percentage point, the Aweighted sound pressure level (OASPL) of interior noise is basically reduced by 0.07% to 3.02%, and the overall sound power of exterior noise is approximately reduced by 11.97% at 110 m3/h.
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Received: 09 March 2015
Published: 28 April 2016
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| [1] |
MOU Jiegang1,DAI Dongshun1,GU Yunqing1,LIU Jian1,ZHENG Shuihua1,WANG Evan2. Characteristics of NonSmooth Surface Drag Reduction Influence on Centrifugal Pump Impeller[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2016, 50(02): 306-312. |
| [2] |
LIU Hou-Lin, YANG Dong-Sheng, TAN Ming-Gao, WANG Kai, ZHUANG Su-Guo, DU Hui. 3D-PIV Measurements of Stall in DoubleBlade Centrifugal Pump[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2012, 46(05): 734-739. |
| [3] |
WANG Deyong，ZHANG Zhennan，GE Xiurun. Influence of Intermediate Principle Stress on Embedded π Plane Crack Propagation[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2014, 48(06): 833-837. |
| [4] |
ZHU Rongsheng1,XING Shubing1,LONG Yun2,WANG Xiuli1,HE Bo1,CAO Liang1. Unequal Head Hydraulic Optimal Design and Experiment on a Non-clogging Centrifugal Pump[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2015, 49(05): 675-680. |
| [5] |
MA Yi1,2,MA Zhongqiang1,ZHANG Shengchang1,2,ZHANG Zhihong1,FAN Weigang3,WANG Jinquan3. A Novel Design Method for Impeller of Medium Specific Speed Non-Overload Multistage Centrifugal Pumps[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2015, 49(05): 695-701. |
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