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Numerical Study in a Mini Trochoidal-Gear Pump With Multi-Meshing Contact Points

[+] Author Affiliations
P. J. Gamez-Montero, R. Castilla, A. Buza, M. Khamashta, E. Codina

Universitat Politècnica de Catalunya, Terrassa, Spain

Paper No. FPMC2016-1723, pp. V001T01A012; 7 pages
  • BATH/ASME 2016 Symposium on Fluid Power and Motion Control
  • BATH/ASME 2016 Symposium on Fluid Power and Motion Control
  • Bath, UK, September 7–9, 2016
  • Conference Sponsors: Fluid Power Systems and Technology Division
  • ISBN: 978-0-7918-5006-0
  • Copyright © 2016 by ASME


A numerical study in a mini trochoidal-gear pump based on an ingenious strategy to adapt the background mesh to the profiles shape and a new boundary condition is presented. The strategy achieves a final background mesh better adapted to the geometries and, additionally, the cells are more homogenous and less distorted when the trochodial-profiles are moved. The new boundary condition to simulate the multi-meshing contact points is applied at every time step by means of the viscous wall approach, a home-made ad-hoc code, which has been integrated in an OpenFOAM solver that also includes the dynamic mesh functionality by deforming the mesh following the trochoidal-gear rotation.

The presented numerical study establishes the basis that will allow simulating more realistic aspects of a new design of a mini trochoidal-gear pump once the need for a continuous fluid domain is overcome reproducing actual contacts between the rotors and will guide to a better understanding of the new design.

Copyright © 2016 by ASME
Topics: Gears , Pumps



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