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Journal of Drainage and Irrigation Machinery Engin  2017, Vol. 35 Issue (8): 652-    DOI: 10.3969/j.issn.1674-8530.16.0137
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Analysis on solid-liquid two-phase flow and abrasion property in multistage centrifugal pump
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Abstract To further understand the flowage structure of solid-liquid two-phase flow in impeller and guide vanes of the multistage centrifugal pump, 3D nonsteady solid-liquid two-phase flow inside the two-stage centrifugal pump, with particle volume fraction of 0% and 20%,density ratio between solid and liquid of 1.468 at design point was simulated by using Euler-Euler two-fluid model based on ANSYS CFX. The results indicate that the addition of particles decreases the pressure at the outlet of the pump and it also has an influence on liquid phase flow to some extent. There were some relations between the distribution of particles in flow field and the location in the pump.In the impeller,higher solid volume fraction exists on pressure and suction surfaces of the inlet,the solid volume fraction on the suction surface is higher than that on the pressure surface in the outlet.In guide vane, the higher solid volume fraction exists at the inlet and outlet of positive guide vane.The particle velocity and solid volume fraction on the front surface of positive guide vane were obviously higher than that on the back surface. Wear of flow components caused by particles occurs at the inlet and outlet of the impeller and the inlet of guide vane.Research on the characteristics of particles′ motion contributes to the design of the solid-liquid pump to a degree.
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CAO Wei-Dong
ZHANG Yi-Ning
YAO Ling-Jun
Key wordsmultistage centrifugal pump   solid-liquid two-phase flow   impeller   radial guide vane   numerical calculation     
Received: 2016-06-15;
Cite this article:   
CAO Wei-Dong,ZHANG Yi-Ning,YAO Ling-Jun. Analysis on solid-liquid two-phase flow and abrasion property in multistage centrifugal pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2017, 35(8): 652-.
 
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