Single- and two-phase, steady and unsteady flows through internal combustion engine type inlet valves

The in-cylinder single- and two-phase flows in a specially designed experimental rig are described. The experimental rig is typical of an engine cylinder, though there is the absence of a reciprocating piston and glass windows are installed to allow for flow visualisation. Vacuum pumps and throttling valves draw air through the rig and control the volumetric flow rate respectively. Under steady and unsteady valve operations, i.e. fixed and reciprocating valve motions, the in-cylinder airflow has been measured using Particle Image Velocimetry, and the two-phase flow has been examined using back-lit photographic and video techniques. Under both types of valve motion, the similarities and differences between these flows are described. The aim is to quantify how realistic a steady-state, or quasi-steady analysis of the in-cylinder flow resembles that of the unsteady case. The former, if viable, provides a much easier approach to computer modelling. The experimental data shows that a quasi-steady assumption is valid. (a) Thesis submitted in fulfilment of the requirements for the degree of Doctor of Philosophy (PhD) in the School of Mechanical and Manufacturing Engineering

  • Corporate Authors:

    University of New South Wales

    School of Civil and Environmental Engineering
    Sydney, New South Wales  Australia  2052
  • Authors:
  • Publication Date: 2003


  • English

Media Info

  • Pagination: 282P

Subject/Index Terms

Filing Info

  • Accession Number: 01011289
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, ATRI
  • Created Date: Dec 19 2005 2:59PM