# A Performance Test and Internal Flow Field Simulation of a Vortex Pump
College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
* [24] College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
* [25] China Academy of West Region Development, Zhejiang University, Hangzhou 310027, China
* [26] Correspondence: [EMAIL_ADDRESS] (Y.S. ); [EMAIL_ADDRESS] (J.M.) [PERSON]  
1 School of Automation and Electrical Engineering/ School of Mechanical & Automotive Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China; [EMAIL_ADDRESS] (P.T. ); [EMAIL_ADDRESS] (D.T.) College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China; [EMAIL_ADDRESS] (D.T.) College of Control Science and Engineering, Zhejiang University, Hangzhou 310027, China; [EMAIL_ADDRESS] (W.H. ); [EMAIL_ADDRESS] (Y.F) College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
* [27] College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
* [28] Correspondence: [PERSON]ADDRESS] (Y.S. ); [EMAIL_ADDRESS] (J.M.) [PERSON]  
1 School of Automation and Electrical Engineering/ School of Mechanical & Automotive Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China; [EMAIL_ADDRESS] (P.T. ); [EMAIL_ADDRESS] (D.T.) College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China; [EMAIL_ADDRESS] (D.T.) College of Control Science and Engineering, Zhejiang University, Hangzhou 310027, China; [EMAIL_ADDRESS] (W.H. ); [EMAIL_ADDRESS] (Y.F.) College of Electrical Engineering, Zhejiang University, Hangzhou 310027 solid-liquid mixtures containing solid and long fibers [1; 2; 3], and in particular, it shows excellent performance in the hydraulic transportation of gases containing manure, biogas, digesers, waste liquid, and agricultural products such as potato, etc., whilst solid media were not damaged. At present, if we compare the vortex pump with the centrifugal pump, the biggest disadvantage is the low efficiency of the vortex pump [4; 5]. In recent years, researchers have carried out studies on pump design and numerical simulation to improve the performance of the vortex pump. [PERSON] et al. analyzed the how variations in geometric parameters influence vortex pump characteristics, and investigated many articles considering parameters in both single-parameter and multi-parameter experiments [6; 7]. Moreover, [PERSON] et al. performed a numerical study of the internal flow field of a vortex pump, and made a comparison with the Hamel-Oseen vortex model. The study suggests that a vortex similar to the Hamel-Oseen vortex is only present at the strong part load operation [8]. Through a numerical simulation and experimental analysis, [PERSON] and [PERSON] studied the influence of different types of hems and blades on the performance of the vortex pump [9; 10]. [PERSON] carried out a numerical simulation and experiment analysis for the gas-liquid two-phase vortex pump [11]. Because of the change in structure from a centrifugal pump to a vortex pump, the internal flow of the vortex pump is complicated, and the flow through the outlet of the pump is the intersection of the flow through the vortex chamber and the impeller. The 32 WB8-12 vortex pump was built based on continuous research findings from the 1980s. In order to design and manufacture a vortex pump with good performance and establish a method of optimum design, we must master the internal flow rules of the pump. So, this paper carries out research work on a performance test and internal flow field simulation of the vortex pump. At present, the internal flow velocity field of the vortex pump can be measured by the particle image velocimetry (PIV) technique, but the pressure field of the high-speed rotating impeller cannot be measured without contact. Therefore, the numerical calculation of the flow field is an effective way to obtain the internal flow rules.