AVS 62nd International Symposium & Exhibition
    Vacuum Technology Tuesday Sessions
       Session VT-TuP

Paper VT-TuP6
Effect of Impeller Tip Clearance on the Degree of Vacuum of Self-Priming Pump

Tuesday, October 20, 2015, 6:30 pm, Room Hall 3

Session: Vacuum Technology Poster Session
Presenter: Youn-Jea Kim, Sungkyunkwan University, Republic of Korea
Authors: Y.J. Kim, Sungkyunkwan University, Republic of Korea
H.J. Jeon, Sungkyunkwan University, Republic of Korea
J.-H. Boo, Sungkyunkwan University, Republic of Korea
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Self-priming vacuum pump is hybrid-type pump of which the principles of axial-type screw vacuum pump and centrifugal pump are combined for better performance. It is operated by the rotation of inducer-impeller generating partial vacuum and centrifugal force. Due to its unique operating principle, self-priming vacuum pump is characterized for transferring fluid having viscosity and is able to be used in various industrial field treating multiphase fluids such as slurry. Tip clearance in self-priming vacuum pump is an important design factor affecting the performance of the pump, which is closely associated with the suction performance. In this study, the effect of impeller tip clearance on the degree of vacuum of self-priming pump was numerically investigated. Numerical analysis was conducted by ANSYS CFX ver. 16. The results for pressure and velocity distributions and H-Q curve were prepared with various values of tip clearance