4639 KB31 KB199920252019Chen, JieDular, MatevžLiu, HoulinLuo, KaikaiWang, YongZhang, Zilongštevilka:4letnik:65str. 251-261ISSN:0039-2480COBISSID_HOST:16618779URN:URN:NBN:SI:doc-8N0JIVPUenZveza strojnih inženirjev in tehnikov Slovenije etc.Strojniški vestnikcoating thicknessdebelina prevlekedvofazne črpalkenihanje tlakanumerical simulationnumerična simulacijapressure fluctuationradial forceradialna silasolid-liquid two-phase flow pumpsEffect of coating thickness on a solid-liquid two-phase flow centrifugal pump under water medium|Spraying a coating on the surface of wet parts of a solid-liquid two-phase flow centrifugal pump could effectively increase its service life. To research the effect of coating thickness on the performance of the pump, a solid-liquid two-phase flow pump with a speed of ns = 81.5 was chosen, and polyurethane coatings with different thicknesses were sprayed on the surface of the blades of the impeller. The influence of coating thickness on the performance of the pump was tested under the condition of a water medium. Combined with numerical simulation, the internal flow, pressure fluctuations and radial force of the model pump were further analysed in detail. Keeping the blade outlet angle unchanged, the head and efficiency of the pump decrease with the increase of the coating thickness, and the amplitude of the decrease increases with the increase of the coating thickness. The peak value of pressure fluctuations increases with the increase of coating thickness. The pressure value on the impeller inlet increases first and then decreases with the increase of coating thickness. Radial force of impeller increases with the increase of coating thickness, and the radial force distributes in the triangle, which is the same as the number of bladesTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za strojništvo