Two-stage ignition and flame stabilisation in engine-relevant conditions. This project aims to reveal the mechanisms of ignition and flame stabilisation in the temperature and pressure conditions that exist in diesel engines, understanding of which is currently very limited despite their significant bearing on pollutants and fuel efficiency. Using massively parallel supercomputing resources, the most detailed, direct numerical simulations of ignition and flame stabilisation to date will be perfo ....Two-stage ignition and flame stabilisation in engine-relevant conditions. This project aims to reveal the mechanisms of ignition and flame stabilisation in the temperature and pressure conditions that exist in diesel engines, understanding of which is currently very limited despite their significant bearing on pollutants and fuel efficiency. Using massively parallel supercomputing resources, the most detailed, direct numerical simulations of ignition and flame stabilisation to date will be performed - they will be three-dimensional and use a detailed chemistry model able to account for low-temperature kinetics and two-stage ignition. Analysis of these data aims to reveal how ignition and flame stabilisation depends on key turbulence and chemical kinetic parameters, thus contributing to developing low-emissions diesel engines.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE110100225
Funder
Australian Research Council
Funding Amount
$600,000.00
Summary
Multi-dimensional, high speed laser imaging facility for fluids and combustion. New high-speed laser diagnostics facilities will be established to enable Australian researchers to perform unique, real time measurements in combustion systems. Such novel capabilities will advance the science of combustion and facilitate the development of design tools for the optimisation of clean and efficient energy conversion devices.
Assessment and Optimisation of Mixing and Aerodynamic Characteristics of Multi-Fuel Burners for Rotary Kilns. Cement kilns are increasingly being used to dispose of waste and low-grade biomass fuels. Being nominally greenhouse neutral, these fuels reduce greenhouse gas emissions by displacing fossil fuels. However, their use also presents significant technical challenges, one of which will be addressed by the proposed program. In building capacity of local industry to utilise these fuels in ceme ....Assessment and Optimisation of Mixing and Aerodynamic Characteristics of Multi-Fuel Burners for Rotary Kilns. Cement kilns are increasingly being used to dispose of waste and low-grade biomass fuels. Being nominally greenhouse neutral, these fuels reduce greenhouse gas emissions by displacing fossil fuels. However, their use also presents significant technical challenges, one of which will be addressed by the proposed program. In building capacity of local industry to utilise these fuels in cement kilns, it will open the door to other opportunities in the future. It will also increase the export earnings of an Australian company who will commercialise these outcomes internationally.Read moreRead less
Break-up and atomisation mechanisms in high pressure fuel sprays. The focus of this research is discovering the underlying mechanisms that give rise to the break-up and atomisation of high pressure sprays such as those found in many engines. The program of research makes use of a range of purpose designed experimental facilities and methodologies which are at the forefront of research in this area. The outcomes from this research will yield improved spray models giving rise to a new era of low e ....Break-up and atomisation mechanisms in high pressure fuel sprays. The focus of this research is discovering the underlying mechanisms that give rise to the break-up and atomisation of high pressure sprays such as those found in many engines. The program of research makes use of a range of purpose designed experimental facilities and methodologies which are at the forefront of research in this area. The outcomes from this research will yield improved spray models giving rise to a new era of low emission fuel injectors for diesel and possibly gas turbine engines.Read moreRead less
Fuel stratification to enable higher load operation of homogeneous charge compression ignition engines. The project aims to provide knowledge needed to solve a problem impeding the development of an efficient and clean engine concept known as homogeneous charge compression ignition. Fuel stratification using alternative fuels will be studied fundamentally and used to reduce the problematic rapid pressure changes that occur in these engines.
The stabilisation of lifted jet flames in hot oxidiser. The project will contribute fundamental insights on a crucial phenomenon in diesel engines: the detachment of the flame from the fuel nozzle, which strongly affects harmful emissions of nitrogen oxides (NOx) and particulates. Detailed numerical simulations will be used to reveal the mechanism of flame stabilisation, knowledge that will aid the development of cleaner engines.
Numerical and experimental studies of the gas-particle flow and dust collection in electrostatic precipitation systems. This project will generate an integrated computer model to describe the gas-solid flow and dust collection in an ElectroStatic Precipitator (ESP). The model can be used to aid the design and control of ESP systems which are widely used for dust collection, leading to more competitive energy and related industries.
Development of low emissions compression-ignition engines via ethanol port-injection dual-fuelling. The project aims to develop a more efficient and more cost-effective way of utilising clean-burning ethanol fuel. Port-injection fuelling of ethanol as a separate fuel stream in compression-ignition engines will be studied fundamentally and combined with novel combustion strategies to overcome problems that occur at high ethanol substitution.
Flame-wall interactions in diesel engine environments. This project aims to advance the fundamental understanding of flame-wall interactions in diesel engines, which is currently very limited despite the wall's significant impact on combustion and pollutants. The aim is to perform the most comprehensive set of measurements to date in a high-pressure chamber and optically accessible engine, including planar imaging of key species and soot, and space-/time-resolved measurements of wall temperature ....Flame-wall interactions in diesel engine environments. This project aims to advance the fundamental understanding of flame-wall interactions in diesel engines, which is currently very limited despite the wall's significant impact on combustion and pollutants. The aim is to perform the most comprehensive set of measurements to date in a high-pressure chamber and optically accessible engine, including planar imaging of key species and soot, and space-/time-resolved measurements of wall temperature. These are intended to be complemented by the first transported probability density function modelling of a diesel spray flame that includes soot, radiation and wall heat transfer. The expected outcomes will greatly advance understanding of flame-wall interactions, thus contributing to the development of cleaner and more efficient engines.Read moreRead less