Author:
Yue Wang,Jin Liu,Juan Xu,Gang Liu,Yuanming Zhang,Zongrui Hao
Abstract
Abstract
Screw-type centrifugal pumps with different rotary layers have been numerically simulated. Internal flow fields of Single-rotary impeller and double-rotary impeller are simulated by Reynolds Navier-Stokes function and k-ϵ viscous model. Stream lines, velocities, and pressure variations are calculated. The stream lines of impellers of two types show that the flow directions are significantly different. The flow distribution inside the pump chamber is approximately the same, and the flow rate is quite different. The pressure distribution of the single-rotary impeller is more uneven than the double-rotary impeller. With different rotary layers, the pressure range has a big difference. The mechanism that the internal flow field of single-rotary impeller pump differs from double-rotary impeller pump rotating layers causes such a large difference in the flow field is discussed.
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