ABSTRACT
This paper presents the application of digital image processing techniques for the analysis and characterisation of diesel sprays. A series of spray images had been recorded during experiments conducted in an optically-accessed chamber in which diesel sprays were generated from a six-hole nozzle with a fuel pressure ranging between 200 and 1600 bars in a non-evaporating and pressurized environment. Digital images of the sprays were captured using a high-speed CCD camera linked to a microcomputer. An image processing algorithm was developed to quantify a set of macroscopic parameters of the sprays including tip penetration, break-up length, near and far field angles. Results obtained demonstrate how the characteristics of sprays and the natures of macroscopic parameters vary with time.
