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| Numerical simulation and experimental study of solid-liquid two-phase flow on rotating disc surface |
| HOU Shanshan1,YANG Chunxia1*,HUANG Fujia2,ZHENG Yuan1 |
| 1. College of Energy and Electrical Engineering, Hohai University, Nanjing, Jiangsu 210098, China; 2. The Eastern Route of South-to-North Water Diversion Project, Jiangsu Water Source Co. Ltd., Nanjing, Jiangsu 210019, China |
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Abstract Based on the discrete particle model of DPM, the erosion wear behavior of rotating disk surface under the action of solid-liquid two-phase flow was studied. The effects of particle volume fraction, particle diameter and inlet velocity on the surface wear of rotating disk were analyzed. The results show that, on the surface of the rotating disc, the wear amount increases with the increase of radius, and the wear amount increases with time. When the volume fraction of particles increases from 2% to 5%, the wear loss amount of the disc increases gradually, the maximum wear amount increases from 5.8×10-7 kg/m2 to 1.3×10-6 kg/m2, and the average wear loss amount increases from 7.5×10-8 kg/m2 to 1.7×10-7 kg/m2; With the decrease of particle diameter, and the increase of particles number at the same volume fraction, the maximum wear and average wear of the disc increase gradually, and the surface wear of the disc increases. With the increase of particle inlet velocity, the maximum wear and average wear of the disc increase slightly. At the same time, the disc test shows that with the increase of the radius of the rotating disc, the wear of the three different materials increases, and the results are consistent with the numerical simulation. Moreover, wear morphology developd from two wear areas to three wear areas, and the boundary lines of different wear areas are parabolic.
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Received: 24 September 2019
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