Poppet valve parameter optimization of a high frequency operating pump system

Yannis Koveos, Antonios Tzes, Demosthenes Tsahalis

Research output: Contribution to journalArticle

Abstract

This article is focused on the development of a finite element model for capturing the fluid-structure interactions in a hybrid electro-hydraulic pump system. The system under study consists of a piezo-actuated piston and two passive poppet valves. A Finite Element Model has been developed which simulates the oscillatory fluid motion (compressible Navier-Stokes equations with standard k-e turbulence extensions) and incorporates an Arbitrary Lagrangian- Eulerian formulation to allow a deforming moving mesh. Through this moving mesh the fluid is capable of tracking the motion of the piston and valves, while a two-way interaction is applied to the surrounding rigid structure. The fluid pressure profile surrounding the solid regions is applied as a force load to the solid and the solid motion is transferred to the fluid domain as a mesh deformation. The simulation results offer useful insight on the pump's performance caused by changes in the: a) valves' spring stiffness and mass, and b) piston's operating frequency. A careful parametric optimization on certain pump's parameters yields a twofold increase in its performance at high frequencies (500 Hz).

Original languageEnglish (US)
Pages (from-to)71-78
Number of pages8
JournalInternational Review of Mechanical Engineering
Volume4
Issue number1
StatePublished - Jan 1 2010

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Pumps
Pistons
Fluids
Rigid structures
Fluid structure interaction
Navier Stokes equations
Turbulence
Stiffness
Hydraulics

Keywords

  • Finite element model
  • High frequency pump
  • Optimization
  • Poppet valve

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Poppet valve parameter optimization of a high frequency operating pump system. / Koveos, Yannis; Tzes, Antonios; Tsahalis, Demosthenes.

In: International Review of Mechanical Engineering, Vol. 4, No. 1, 01.01.2010, p. 71-78.

Research output: Contribution to journalArticle

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