Solid volume concentration distribution of solid-liquid two-phase flow in HD type petrol-chemical process pump
Liu Yi1,2, Jiang Yue1, Han Zhengjie1
1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, Gansu 730050, China; 2.Wenzhou Pump and Valve Engineering Institute, Wenzhou, Zhejiang 325105, China
Abstract：The steady solid-liquid two-phase flow field in the fist stage of a HD type petrol-chemical process pump is simulated with CFD software by employing the Reynolds Averaged Navier-Stokes equations and the standard k-ε turbulence model as well as SIMPLEC algorithm to explore the distribution pattern of solid particle volume concentration in the double-suction impeller and double-channel volute of the first stage of the pump. The two-phase flow is subject to different solid bulk volume concentrations and particle diameters. The results show that solid volume concentration distribution becomes non-uniform in the double-suction impeller but exhibits a noticed regular pattern with increasing solid particle bulk concentration at constant particle diameter, that is, the concentration is higher near the blade suction side than the pressure side. Besides, solid particles have a tendency to move to the blade suction side. Moreover, the particles move towards the suction side with increasing particle dia-meter at fixed bulk concentration; however, the non-uniformity of solid concentration remains nearly unchanged. In the double-channel volute, solid concentration is distributed unevenly as well; particularly, the local solid particle concentration is increased from section 1 to section 8. Additionally, in the diffuser of volute, the concentration is higher nearly the diffuser side wall with tongue than the opposite side wall of the tongue. The solid particles with large diameter tend to move towards the opposite side wall of the tongue, causing a relatively higher concentration there.
刘宜,, 蒋跃, 韩正杰. HD型石油化工流程泵内部固液两相分布规律[J]. 排灌机械工程学报, 2013, 31(9): 758-762.
Liu Yi,, Jiang Yue, Han Zhengjie. Solid volume concentration distribution of solid-liquid two-phase flow in HD type petrol-chemical process pump. Journal of Drainage and Irrigation Machinery Engin, 2013, 31(9): 758-762.
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