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Hayan Miao
School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, NSW 2052, Australia

Brian E. Milton
Emeritus Professor, School of Mechanical and Manufacturing Engineering The University of New South Wales Sydney, NSW 2052 Australia

R. T. Casey
School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, NSW 2052, Australia


Gaseous fuels have important emission and resource benefits but are unsuitable for CI (diesel) engines. However, the dual-fuel (DF) concept provides a method for their use. At UNSW, fundamental studies are being followed with the development of a DF combustion bomb and a rapid compression machine. A 3-D Finite Volume Method (FVM) code has been developed to describe the constant volume, DF combustion in these rigs. The recent focus of the work is towards understanding the influence of different factors on dual-fuel combustion in engines and the occurrence of knock. The numerical results predict that swirl velocities of 550 rad/s are required to produce suitable burning rates for engines. This requires shallow ramp helical inlet ports. The effect of ignition delay on the combustion knock is illustrated, liquefied petroleum gas (LPG) being more likely than compressed natural gas (CNG) to result in spark ignition (SI) type knock.

ICHMT Digital Library

Bow shocks on a jet-like solid body shape. Thermal Sciences 2004, 2004. Pulsed, supersonic fuel jets - their characteristics and potential for improved diesel engine injection. PULSED, SUPERSONIC FUEL JETS - THEIR CHARACTERISTICS AND POTENTIAL FOR IMPROVED DIESEL ENGINE INJECTION
View of engine compartment components (left). Plots of temperature distributions in centreplane, forward of engine (right). CHT-04 - Advances in Computational Heat Transfer III, 2004. Devel... DEVELOPMENT AND CURRENT STATUS OF INDUSTRIAL THERMOFLUIDS CFD ANALYSIS
Pratt & Whitney's F-135 Joint Strike Fighter Engine under test in Florida is a 3600F class jet engine. TURBINE-09, 2009. Turbine airfoil leading edge stagnation aerodynamics and heat transfe... TURBINE AIRFOIL LEADING EDGE STAGNATION AERODYNAMICS AND HEAT TRANSFER - A REVIEW
Refractive index reconstructed field. (a) Second iteration. (b) Fourth iteration. Radiative Transfer - VI, 2010. Theoretical development for refractive index reconstruction from a radiative ... THEORETICAL DEVELOPMENT FOR REFRACTIVE INDEX RECONSTRUCTION FROM A RADIATIVE TRANSFER EQUATION-BASED ALGORITHM
Two inclusion test, four collimated sources. Radiative Transfer - VI, 2010. New developments in frequency domain optical tomography. Part II. Application with a L-BFGS associated to an inexa... NEW DEVELOPMENTS IN FREQUENCY DOMAIN OPTICAL TOMOGRAPHY. PART II. APPLICATION WITH A L-BFGS ASSOCIATED TO AN INEXACT LINE SEARCH