Mixed time–frequency domain simulation of a hydraulic inductance pipe with a check valve

This paper deals with the efficient computation of hydraulic switching systems with a check valve by a mixed time–frequency domain method; frequency-domain modelling is performed on the wave propagation in a pipe and time-domain modelling is applied to the switching valve and the check valve. The du...

Full description

Saved in:
Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part C, Journal of mechanical engineering science Journal of mechanical engineering science, 2011-10, Vol.225 (10), p.2413-2421
Main Authors: Scheidl, R, Manhartsgruber, B, Kogler, H
Format: Article
Language:English
Subjects:
Algebra
Computational efficiency
Computational fluid dynamics
Fluid flow
Hydraulics
Mathematical analysis
Mathematical models
Mechanical engineering
Modelling
Propagation
Valves
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper deals with the efficient computation of hydraulic switching systems with a check valve by a mixed time–frequency domain method; frequency-domain modelling is performed on the wave propagation in a pipe and time-domain modelling is applied to the switching valve and the check valve. The dual property of the check valve makes the complete problem have variational inequality properties. A solution method is presented which replaces the pressure and the flowrate of the check valve as a function of one new variable. The resulting system of non-linear algebraic equations is solved using a Newton–Raphson method in combination with a smoothing of the non-smooth properties of the check valve. The method is applied to a parameter study of a hydraulic buck converter.
ISSN:0954-4062
2041-2983
DOI:10.1177/0954406211412459