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The Clogging Behavior of a Vortex Pump: An Experimental Study on the Influence of Impeller Designs

[+] Author Affiliations
Angela Gerlach, Dorian Perlitz, Paul Uwe Thamsen

Technische Universität Berlin, Berlin, Germany

Flemming Lykholt-Ustrup, Christian Brix Jacobsen

Grundfos Holding A/S, Bjerringbro, Denmark

Paper No. FEDSM2017-69021, pp. V01AT05A002; 10 pages
  • ASME 2017 Fluids Engineering Division Summer Meeting
  • Volume 1A, Symposia: Keynotes; Advances in Numerical Modeling for Turbomachinery Flow Optimization; Fluid Machinery; Industrial and Environmental Applications of Fluid Mechanics; Pumping Machinery
  • Waikoloa, Hawaii, USA, July 30–August 3, 2017
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5804-2
  • Copyright © 2017 by ASME


This paper analyzes the clogging behavior of a vortex pump with different impeller designs. The influence of blade outlet angle, blade number, and impeller diameter were tested. Non-woven textiles in different concentrations served as the clogging material. The results suggest that a smaller outlet blade angle, a higher blade number, and a larger impeller diameter allow pumping more textiles. Impellers that were capable of pumping more textiles, however, were less efficient. Overall, pumping textiles causes efficiency losses. However, this could not be only related to increased power consumption. Flow rates under clogging operation were close to the flow rates under clear water operation irrespective of the amount of clogging material and the impellers design. Further, in all tests clogging material accumulated at the suction mouth in the casing.

Copyright © 2017 by ASME
Topics: Impellers , Pumps , Vortices



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