The characteristics of the internal flow field in a three-blade cam rotor pump have an important influence on its performance and reliability,so it is necessary to analyze the internal flow field.Therefore,the numerical simulation of the internal flow field of a three-leaf cam rotor pump for papermaking was carried out.Establishing a three-dimensional solid model of a three-leaf cam rotor pump,meshing the three-leaf,and setting boundary conditions and fluid properties;On this basis,four fluid motion control equations are established and solved by pressure solver in CFX software.The results show that at 0.20 s,0.22 s and 0.24 s,the pressure of the flow field in the upper rotor element gradually increases,and the lower rotor element gradually moves towards the outlet of the rotor pump.From 0.26 s to 0.28 s,the lower rotor element gradually communicates with the outlet,and the pressure of the flow field in the pump tends to be stable again.At 0.20 s and 0.22 s,the center of the high-speed area is located below the exit section because the rotor element is not completely connected with the exit section.Then,with the rotation of the rotor,at 0.24 s,0.26 s and 0.28 s,the rotor element is connected with the exit section,and the internal fluid flow begins to decrease gradually,and the center of the high-speed area also begins to move upward.
关键词
三叶凸轮转子泵/内部流场/流体运动控制方程/数值模拟
Key words
three lobe cam rotor pump/internal flow field/fluid motion control equation/numerical simulation
维普
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