A theoretical investigation into the effect of nonlinear wave interactions in promoting transition-to-turbulence. The problem of transition-to-turbulence remains one of the fundamental unanswered questions in fluid dynamics. An understanding of the processes leading to transition is necessary if the active control of turbulence is to be achieved. This project will focus attention on a new class of waves, which have only recently been described the CI, in order to determine how they are triggered ....A theoretical investigation into the effect of nonlinear wave interactions in promoting transition-to-turbulence. The problem of transition-to-turbulence remains one of the fundamental unanswered questions in fluid dynamics. An understanding of the processes leading to transition is necessary if the active control of turbulence is to be achieved. This project will focus attention on a new class of waves, which have only recently been described the CI, in order to determine how they are triggered and how they may serve to actively promote the early development of turbulence in a broad class of fluid flows.Read moreRead less
The effect of diffusive mass transfer on interfacial fluid instabilities. A wide variety of industrial and physiological fluid flows fall into the general class of two-layer fluids wherein a fluid of one density/viscosity flows over another of a different density/viscosity. Such flows can ultimately become turbulent (that is, chaotic) through the growth of small background disturbances. An understanding of this process is important in controlling fluid dynamical mixing. This project will conside ....The effect of diffusive mass transfer on interfacial fluid instabilities. A wide variety of industrial and physiological fluid flows fall into the general class of two-layer fluids wherein a fluid of one density/viscosity flows over another of a different density/viscosity. Such flows can ultimately become turbulent (that is, chaotic) through the growth of small background disturbances. An understanding of this process is important in controlling fluid dynamical mixing. This project will consider two layer flows in the case when diffusive mass transfer acts at the fluid interface with the aim of determining how diffusion affects the process of transition-to-turbulence.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0238345
Funder
Australian Research Council
Funding Amount
$373,000.00
Summary
Advanced Laser Diagnostics in Dilute Heterogeneous Combustion. This proposal seeks to establish a state-of-the-art laser diagnostics facility with unique capabilities for non-intrusive measurements in dilute multi-phase flows. Such heterogeneous flows which involve stationary surfaces, disperse suspended droplets or suspended particles are found in many applications including engines, furnaces, industrial and chemical processing and micro-combustion devices. This facility will give Australian re ....Advanced Laser Diagnostics in Dilute Heterogeneous Combustion. This proposal seeks to establish a state-of-the-art laser diagnostics facility with unique capabilities for non-intrusive measurements in dilute multi-phase flows. Such heterogeneous flows which involve stationary surfaces, disperse suspended droplets or suspended particles are found in many applications including engines, furnaces, industrial and chemical processing and micro-combustion devices. This facility will give Australian researchers the unprecedented opportunity to perform measurements of flow, mixing, temperature and composition fields in the gas and liquid or solid phases simultaneously. The resulting data will advance current knowledge in these complex flows and lead to new and improved reactor designs.
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Quantification of heat release, NOx emissions and soot from high temperature gaseous flames. The ongoing importance of Australia's minerals processing sector depends on advanced combustion technology to minimise the emission of NOx and other greenhouse gases. The heat release and NOx emissions from the high temperature flames used in such processes is known to depend strongly on the presence of soot. However their optimisation and design is limited by a lack of fundamental data under relevant c ....Quantification of heat release, NOx emissions and soot from high temperature gaseous flames. The ongoing importance of Australia's minerals processing sector depends on advanced combustion technology to minimise the emission of NOx and other greenhouse gases. The heat release and NOx emissions from the high temperature flames used in such processes is known to depend strongly on the presence of soot. However their optimisation and design is limited by a lack of fundamental data under relevant conditions. To address this need, new measurements and analysis will be performed to quantify the complex relationship between turbulent mixing, soot formation, heat release and NOx emissions under high temperature conditions of both fundamental and practical significance.
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Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0453629
Funder
Australian Research Council
Funding Amount
$322,077.00
Summary
Integrated Combustion Research Facility for Biomass Derived Fuels. Bio-mass derived fuels are gaining in importance because they can contribute to solving the problems arising from the world wide decline in the reserve to production ratio of crude oil, the emission of greenhouse gases and energy security. In Australia they can also assist in mitigating dry-land salinity by increasing the viability of large-scale plantation of locally indigenous trees. However significant technical and political ....Integrated Combustion Research Facility for Biomass Derived Fuels. Bio-mass derived fuels are gaining in importance because they can contribute to solving the problems arising from the world wide decline in the reserve to production ratio of crude oil, the emission of greenhouse gases and energy security. In Australia they can also assist in mitigating dry-land salinity by increasing the viability of large-scale plantation of locally indigenous trees. However significant technical and political issues remain to be addressed before this potential can be realised. The Integrated Combustion Research Facility for Biomass Derived Fuels to be established by this grant will provide the necessary infrastructure to address these issues.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE170100174
Funder
Australian Research Council
Funding Amount
$193,000.00
Summary
Acoustic levitation facility for high pressure multiphase systems research. This project aims to create a specialised acoustic levitation facility that delivers precise control of a suspended particle/droplet/bubble within a high pressure continuous phase, and simultaneous measurement of multiple bulk and interfacial properties. Acoustic levitation enables container-less experiments, offering opportunities for applied engineering and fundamental science. This acoustic levitation system will be i ....Acoustic levitation facility for high pressure multiphase systems research. This project aims to create a specialised acoustic levitation facility that delivers precise control of a suspended particle/droplet/bubble within a high pressure continuous phase, and simultaneous measurement of multiple bulk and interfacial properties. Acoustic levitation enables container-less experiments, offering opportunities for applied engineering and fundamental science. This acoustic levitation system will be integrated with a specialised Raman imaging microscope to study crystallisation, mass transfer and molecular exchange, in application areas including energy transport, carbon capture and storage, and protein nucleation. This project is expected to open new avenues in engineering, chemistry and physics.Read moreRead less
New understanding and models for two-phase solar thermal particle receivers. The project aims to provide the new understanding of, and computational design tools for, next generation solar thermal particle receivers and their hybrids. Particle receivers, which heat fine particles in suspension, offer much greater efficiency than current tubular receivers, but are presently unreliable due to the poor understanding of the complex and coupled mechanisms that govern their performance. The results ar ....New understanding and models for two-phase solar thermal particle receivers. The project aims to provide the new understanding of, and computational design tools for, next generation solar thermal particle receivers and their hybrids. Particle receivers, which heat fine particles in suspension, offer much greater efficiency than current tubular receivers, but are presently unreliable due to the poor understanding of the complex and coupled mechanisms that govern their performance. The results are expected to speed up the development and roll-out of these devices, to deliver cost-effective, low-emissions energy technologies for future power generation and thermo-chemical processes. The aims will be met by the parallel application of advanced laser diagnostic measurements and computational fluid dynamics modelling techniques.Read moreRead less
Heat transfer in novel solar thermal reactors to process minerals and solar fuels. The project will develop new design tools for optimising novel solar reactors for the production of solar fuels and for low emission minerals processing. It will enable substantial cost reductions in these technologies and establish a unique and leading program in solar power tower technology within Australia.