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| Numerical simulation and experiment of gasliquid twophaseflow field in labyrinth screw pump |
| Zhang Youchen, Yang Chunling, Li Jingzhong |
| (College of Mechanical Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China) |
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Abstract The flow field of gasliquid twophase in a labyrinth screw pump was simulated by CFD software Fluent based on the mixture model of multiphase, RNG k-ε turbulent model and SIMPLEC algorithm. The experiment was carried out to examine the simulation results. The two phase flow field in the pump was studied by analyzing pressure, velocity and gas void distributions. The simulation results showed that the pressure in screw groove grew continueously, velocity of outside regions was bigger than that of inside, the gas void distribution in screw groove was uniformly. But higher gas void regions appeared at inlet and outlet area and blocking phenomenon easily occured. The experimental results prove the validity of the numerical calculation model. To some extent, the simulation results can reveal the evolution of the two phase flow, and provide references for researching the principle of the twophase flow field in pumps. The experimental results also prove that the pump has a good aeration effect. So the labyrinth screw pump can be used to replace traditional aerators.
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Received: 13 May 2010
Published: 30 November 2010
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