Flow Analysis for Optimal Design of Small Gear Pump

소형 기어펌프 최적화 설계를 위한 유동해석

Lee, Suk-Young;Kim, Seung-Chul

  • Received : 2015.02.21
  • Accepted : 2015.03.16
  • Published : 2015.03.31


Gear pump has a simple structure high reliability, easy operation and maintenance, widely used as a source of hydraulic system of hydraulic. In general, the gear pump was designed using variety of variables, the variables through the analysis of the mass flow rate and efficiency. In this paper, three-dimensional flow of the gear pump, in order to produce the optimal design of product, analysis was performed by using commercial software ANSYS v15.0 CFX. And then, combination of design parameters selected by ANSYS was carried out to confirm the simulation result. The efficiency and mass flow rate of the gear pump were studied by varying its rotational speed and the clearance between the gear tip and the housing. In the simulation results, as the rotational speed were increased, the average mass flow rate and efficiency increased. Furthermore, as the clearance between the gear tip and the housing was increased, the average mass flow rate and efficiency decreased.


Gear Pump;CFD;Optimal Design;Parameters


  1. Lee, Y. K., 2009, "Introduction to Analysis Method Theory of Gear Pump Using Immersed Solid Method of ANSYS CFX," Korean Fluid Machinery Association 2009 Fluid Machinery Research and Development Conference Program, pp.649-652
  2. Ansys CFX Theory Guide
  3. S. H. Kim, H. M. Son, J. C. Lee, "Characteristics of Two Dimensional Flow in an Involute Gear Pump" Journal's KFPS, Vol. 8, No. 2, pp. 36-41. 2011
  4. Kim, H. and Marie, H., 2007, "Two-Dimensional CFD Analysis of a Hydraulic Gear Pump," Proceedings of the 2007 ASEE Annual Conference, Honolulu, Hawaii
  5. J. H. Lee, T. G. Kim, S. W. Lee, "Fluid-structure Interaction Analysis of External Gear Pump" Journal's KSCFE, Vol. 2010., No. 5, pp. 83-85, 2010
  6. D. H. Kim, K. S. Chung, B. M. Kim, "The Optimal Preform Design for Automotive Differential Bevel Gear, Journal's KASE, Vol. 12, No. 1, pp. 184-189, 2004
  7. D. W. Yoo, J. H. Lee, "A Study on the Optimal Shape Design of Front Axle of Wheel Loader using the Design of Experiments", Journal's KSPE, Vol. 29, No.2, pp. 193-200, 2012
  8. Y. D. Choi, Y. T. Kim, Y. H. Lee, "CFD Analysis of Pressure pulsation and Internal Flow for a Positive Displacement Hydraulic Turbine" Journal's KOSME, Vol. 31, No. 6, pp. 687-69
  9. Choi, Y. D., Kim, Y. T. and Lee, Y. H., 2007, "CFD Analysis of Pressure Pulsation and Internal Flow for a Positive Displacement Hydraulic Turbine," Journal of the Korean Society of Marine Engineering, Vol.31, No.6, pp. 687-693

Cited by

  1. Study on Convergence Technique through Flow Analysis at the Flexible Joint of the Pipe Laying vol.6, pp.3, 2015,


Supported by : 한국산학연협회