Affiliation:
1. Kunming University of Science and Technology
Abstract
The paper presents numerical simulation of the vortex in a submersible axial flow pump impeller using OpenFoam code. A mixture assumption and a finite rate mass transfer model were introduced to analyze vortex. The finite volume method is used to solve the governing equations of the mixture model and the pressure-velocity coupling is handled via a Pressure Implicit with Splitting of Operators (PISO) procedure. Simulation results have shown that the cavitation may occur on the lower portion of impeller suction side. And the blade channel vortex will be formed in the impeller. It can induce the pressure pulsation in the impeller and can result in reduced efficiency of the submersible axial flow pump.
Publisher
Trans Tech Publications, Ltd.
Reference8 articles.
1. Schrapp H, Stark U, Goltz I, et al. Structure of the Rotor Tip Flow in a Highly-Loaded Single-Stage Axial-Flow Pump Approaching Stall: Part I—Breakdown of the Tip-Clearance Vortex[C]/ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. American Society of Mechanical Engineers, 2004: 307-312.
2. Farrell K J. An investigation of end-wall vortex cavitation in a high Reynolds number axial-flow pump[R]. PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB, (1989).
3. Fentiman N J, Lee K C, Paul G R, et al. On the trailing vortices around hydrofoil impeller blades[J]. Chemical Engineering Research and Design, 1999, 77(8): 731-740.
4. Vad J, Bencze F, Benigni H, et al. Comparative investigation on axial flow pump rotors of free vortex and non-free vortex design[J]. Mechanical Engineering, 2002, 46(2): 107-116.
5. Farrell K J, Billet M L. A correlation of leakage vortex cavitation in axial-flow pumps[J]. Journal of fluids engineering, 1994, 116(3): 551-557.