Experimental And Flow Field Inside Impeller Of Centrifugal Pump Work Cfd Numerical Simulation,

Screw-centrifugal pump is a kind of new type liquid-solids handing pump whose unique impeller structure combines both the advantages of screw pump and centrifugal pump. Compared with traditional liquid-solids handing pumps, screw-centrifugal pump has a lot of virtues, such as clog-free performance, small abrasion, high efficient operation, longer life, lower operation cost and convenient adjustment. Now, screw-centrifugal pump has became a kind of ideal liquid-solids handling pumps and it has been used in transporting fruits, vegetables, fluffy materials, paper pulp, live fish and high density slurries, etc.So far, the research about the screw-centrifugal pump is not at the same level as the design of conventional centrifugal pump no matter in theory or in practice. In national, people design the screw-centrifugal pump using ID theory as same as designing the common centrifugal pumps, and fewer research has been done in this kind pump's characteristic and inner flow. Thus, it is very significant to establish experimental bench and test the characteristic of the screw-centrifugal pump and model the inner flow condition of this kind of pump to find the factors affecting the pump's performance and supply reference for further search in the flow in this kind of pump and new method of design.The main content of this paper is as follows:1 , Establishing the screw-centrifugal experimental bench .2, Testing the capacity performance and cavitation performance and analysing the reason of these performance.3, Modeling the inner flow condition utilizing CFD of the screw-centrifugal pump and discussing the inner flow roles.4, Summarizing the factors of affecting the performance of the screw-centrifugal pump and expounding some methods to improving this kind of pumps.