Engineering HDR Seminar Series 9, 2011: A Study on Fuel Spray Characteristics

Ms Caroline Ho Ann-Ni, EGT postgraduate student

Date: 2011-06-30
Time: 10:00 to 11:00
Venue: Meeting room 1, 5-4-22, School of Engineering


Numerical modelling provides a viable technique, overcoming the limitations of experimental techniques, in studying fuel spray structure and fuel droplet breakup. The system of interest is a liquid-gas system of a diesel spray injector, with the ability to function with biodiesel. Yet, numerical modelling of the aforesaid system requires further development to accurately characterise the complex flow physics in relation to the three basic processes of fuel droplet breakup; which is the internal nozzle flow, the primary breakup of spray and the secondary breakup of spray. The breakup of liquid fuel droplets influences the drop size distribution and the macroscopic spray pattern which significantly affects the combustion efficiency and emissions. The mounting interest in biologically derived alternative fuels (biodiesel) requires an understanding of how the different fuel properties, corresponding to a myriad of biodiesels, would influence droplet breakup. This research work seeks to develop a population balance model to study fuel spray structure and fuel droplet breakup, as population balance modelling is known to be more computationally cost effective. It will also provide a versatile method to aid the development of new nozzles for use with alternative fuels.

About the Speaker

Ms Caroline Ho Ann Ni is a postgraduate student in the School of Engineering who commenced her Masters candidature in June 2010. She is currently pursuing her Masters study in the area of fuel spray characterization under the supervision of Dr Kenny Tan Boon Thong who is a Research Strength member of Energy and Green Technology. Her primary research focus is on the studies of fuel droplet breakup with aims of developing computational models to predict spray patterns and droplet sizes.  This seminar is arranged as part of the fulfillment of Faculty’s requirements for candidature conversion from Masters to PhD.