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

    Fingerprint

    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

    Koveos, Yannis ; Tzes, Antonios ; Tsahalis, Demosthenes. / Poppet valve parameter optimization of a high frequency operating pump system. In: International Review of Mechanical Engineering. 2010 ; Vol. 4, No. 1. pp. 71-78.
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