Internal and external characteristics of axial-flow pump based on coupling CFX with Workbench
Dong Xinghua1, Guo Yanlei2, Bi Zhen2, Li Yibin2, Cheng Xiaorui2
1. Ebara Machinery(China)Co.Ltd., Yan Tai, Shan Dong 265500, China; 2. School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, Gansu 730050, China
Abstract:To study the effects of coupling on the internal and external characteristics of the large submersible axial flow pump, the method of coupling CFX with Workbench was adopted to calculate the rotor components of pump in two-way coupling. The external characteristic and pressure fluctuation of large submersible axial flow pump in consideration of coupling effects or not were computed. Then the effects of coupling on macroscopic external characteristic and microscopic pressure fluctuation were ana-lyzed. Compared to those not by the coupling effects, both the efficiency and head by the coupling effects decrease by 1% or so. At the same time, the coupling effects could influence pressure fluctuation in the pump. To this pump, the coupling effects make no difference to the variation trend of pressure fluctuation. However, the amplitude corresponding to different frequencies would increase slightly. The closer the monitoring point is to the tip of impeller inlet, where the maximum deformation exists, the larger the amplitude of pressure fluctuation increase is;on the contrary, it is smaller.
董兴华, 郭艳磊, 毕祯, 黎义斌, 程效锐. 基于CFX与Workbench耦合的轴流泵的内外特性[J]. 排灌机械工程学报, 2015, 33(6): 488-493.
Dong Xinghua, Guo Yanlei, Bi Zhen, Li Yibin, Cheng Xiaorui. Internal and external characteristics of axial-flow pump based on coupling CFX with Workbench. Journal of Drainage and Irrigation Machinery Engin, 2015, 33(6): 488-493.
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