Particle image velocimetry analysis of IC engine in-cylinder flows
1996; Elsevier BV; Volume: 25; Issue: 6 Linguagem: Inglês
10.1016/0143-8166(95)00092-5
ISSN1873-0302
AutoresMark Reeves, Colin P. Garner, J. C. Dent, N. A. Halliwell,
Tópico(s)Aerodynamics and Fluid Dynamics Research
ResumoThis paper discusses the use of particle image velocimetry for measuring in-cylinder flows in multi-valve IC engines. The techniques and their limitations are discussed with special reference to the study of large-scale flow structures in a four valve optical IC engine exhibiting significant barrel swirl. Examples of velocity vector maps derived by digital autocorrelation are presented for a range of crank angles through the induction and compression strokes from both horizontal and vertical measurement planes. The evident strengths and limitations of the current technique for in-cylinder applications are discussed with respect to spatial resolution, velocity gradients and dynamic range. Recent developments for overcoming the limitations are also reviewed.
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