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International Standard Serial Number:
ISSN 1001-4551
Sponsor:
Zhejiang University;
Zhejiang Machinery and Electrical Group
Edited by:
Editorial of Journal of Mechanical & Electrical Engineering
Chief Editor:
ZHAO Qun
Vice Chief Editor:
TANG ren-zhong,
LUO Xiang-yang
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Abstract: Aiming at the problems of complex structure and large flow fluctuation of traditional reciprocating pump, a new type of swing pump model was proposed. The circular shape of the rotor was used as the shape of the swing pump, and the change of the flow field in the swing pump was studied. Firstly, the working principle of the swing pump was analyzed and the geometric model of the swing pump was established. Then, the geometric model was meshed by ICEM software, the dynamic mesh technology of Fluent software and the turbulence model of RNG kε were used to numerically simulate the fluid region of the swinging pump. During the numerical simulation, custom UDF was used to change the boundary conditions of the inlet and outlet. Finally, the pressure and velocity distribution nephograms and flow fluctuation curve of the pump at different time were obtained. The results show that the pressure inside the cavity is mainly concentrated in the oil outlet cavity, and the pressure increases as the speed increases, the maximum pressure is 0.52MPa. And the maximum flow rate is concentrated at the oil outlet, and the maximum speed is 8m/s. The flow pulsation curve has the same waveform as the acceleration of the rotor. A method to reduce the flow pulsation is proposed, which provides a certain reference for studying the flow pulsation of the swing pump.
Key words: swing pump; flow field analysis; numerical simulation; flow pulsation; dynamic grid
WANG Zi-xiang, ZOU Min, ZHANG Meng-xi, et al. Flow field analysis of a new swing pump based on numerical simulation［J］.Journal of Mechanical & Electrical Engineering, 2021,38(12):1552-1557.
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