Understanding and modifying vortex structures in wind turbine wakes. At a fundamental research level, Australia's active participation in this area of national priority and research strength will be advanced through our published research, which will increase our understanding of wind turbine wakes and their effects in wind farms. This understanding will then be used to produce improved methods of predicting wind turbine performance. Such methods are needed by wind energy designers to produce b ....Understanding and modifying vortex structures in wind turbine wakes. At a fundamental research level, Australia's active participation in this area of national priority and research strength will be advanced through our published research, which will increase our understanding of wind turbine wakes and their effects in wind farms. This understanding will then be used to produce improved methods of predicting wind turbine performance. Such methods are needed by wind energy designers to produce better wind farms. It will also be used to recommend how to improve the aerodynamic design of turbine components, such as the blades and hub. Numerical tools will be developed for industry use, and training will be provided to personnel, thereby increasing the capabilities of Australia's growing wind energy industry.Read moreRead less
Investigation into flow over complex topography and escarpments for wind turbine siting using experimental and computational methods. This project will improve national capability to optimise power production from wind turbine farms in complex terrain by improving the understanding of the flow regime. By better understanding separated regions and the turbulent structures within these regions power production can be optimised and fatigue risks associated with turbine positioning in complex sites ....Investigation into flow over complex topography and escarpments for wind turbine siting using experimental and computational methods. This project will improve national capability to optimise power production from wind turbine farms in complex terrain by improving the understanding of the flow regime. By better understanding separated regions and the turbulent structures within these regions power production can be optimised and fatigue risks associated with turbine positioning in complex sites can be reduced. This will improve confidence in wind farm site assessment techniques and consequently reduce economic risks associated with current wind farm viability assessments. By increasing national capacity to generate clean energy stationary energy emissions can be reduced. This project will also deliver high calibre graduates that will be potential future industry leaders.Read moreRead less
Electrohydrodynamically-Driven Microcentrifugation for Microfluidic Applications. Microfluidics has the potential to revolutionise the way we live. Imagine portable pocket sized devices for cheap and rapid medical diagnostics and drug delivery. Or miniaturised chemical/biological sensors as early warning detection systems against terrorist threats. The research is thus intended to not only commercially benefit various industries, but also to improve the quality of life as a whole by making medic ....Electrohydrodynamically-Driven Microcentrifugation for Microfluidic Applications. Microfluidics has the potential to revolutionise the way we live. Imagine portable pocket sized devices for cheap and rapid medical diagnostics and drug delivery. Or miniaturised chemical/biological sensors as early warning detection systems against terrorist threats. The research is thus intended to not only commercially benefit various industries, but also to improve the quality of life as a whole by making medical diagnosis or chemical/biological detection more readily accessible, portable and more efficient. Moreover, the fundamental studies, aimed at generating an understanding of the complex physics involved, has generic benefits to researchers in applied physics as well as providing practical protocols for microdevice development.Read moreRead less
Viscous extensional flow and drop breakoff. Honey falling from a spoon is an everyday example of a viscous fluid in a free extensional flow which may eventually break up into drops. Such flows are important in modern technologies including ink-jet printing, welding, soldering and molten metal processing, polymer and glass fibre spinning, and for rheological measurement. We seek to increase understanding of the mechanisms governing such flows, particularly the role of initial conditions and the ....Viscous extensional flow and drop breakoff. Honey falling from a spoon is an everyday example of a viscous fluid in a free extensional flow which may eventually break up into drops. Such flows are important in modern technologies including ink-jet printing, welding, soldering and molten metal processing, polymer and glass fibre spinning, and for rheological measurement. We seek to increase understanding of the mechanisms governing such flows, particularly the role of initial conditions and the geometry of the original containing vessel, together with balances between forces such as inertia, gravity, viscosity, viscoelasticity, and surface tension, through a theoretical, computational and experimental study of the fluid mechanics.Read moreRead less
Turbulent mixing of a passive scalar. Turbulence is the usual state of fluid motion. This proposal will increase Australia's expertise in fundamental turbulence research, especially in the area of turbulent mixing, which is of major importance in many natural and engineering problems involving combustion, chemical reactions and pollution. A better knowledge of mixing at small scales will lead to more efficient combustion, savings in energy expenditure as well as a reduction in pollutant emiss ....Turbulent mixing of a passive scalar. Turbulence is the usual state of fluid motion. This proposal will increase Australia's expertise in fundamental turbulence research, especially in the area of turbulent mixing, which is of major importance in many natural and engineering problems involving combustion, chemical reactions and pollution. A better knowledge of mixing at small scales will lead to more efficient combustion, savings in energy expenditure as well as a reduction in pollutant emissions. Read moreRead less
Control of Transitions in Wakes and Swirling Flows. We will attack industrially-important problems in fluid mechanics by building new, and substantially enhancing existing, international collaborations between key complementary teams of internationally-recognised French and Australian researchers. Funding will support the exchange of 6 senior staff and 3 graduate students, which, in turn, will measurably benefit the research output of a further 20 graduate students and 7 post-doctoral fellows as ....Control of Transitions in Wakes and Swirling Flows. We will attack industrially-important problems in fluid mechanics by building new, and substantially enhancing existing, international collaborations between key complementary teams of internationally-recognised French and Australian researchers. Funding will support the exchange of 6 senior staff and 3 graduate students, which, in turn, will measurably benefit the research output of a further 20 graduate students and 7 post-doctoral fellows associated with closely-related projects. From the Australian perspective, the planned exchanges will bring new research expertise, knowledge and skills, which will be focussed on a diverse range of applications. Target industries (with existing collaborations) include Airbus and Dassault Aviation in Europe, and Aerosonde and Warman pumps in Australia. Read moreRead less
Transport barriers in complex turbulent flows: formation, detection and characterization. Barriers to transport in complex fluid flows are ubiquitous in nature, yet mathematical and numerical approaches have so far been unable to solve this problem in the presence of turbulence. This project aims to undertake the first systematic laboratory study of transport barrier generation, control and interactions to reveal the role of turbulence in the stochastic transport in fluids. It will develop new m ....Transport barriers in complex turbulent flows: formation, detection and characterization. Barriers to transport in complex fluid flows are ubiquitous in nature, yet mathematical and numerical approaches have so far been unable to solve this problem in the presence of turbulence. This project aims to undertake the first systematic laboratory study of transport barrier generation, control and interactions to reveal the role of turbulence in the stochastic transport in fluids. It will develop new methods of transport barrier modelling which will equip specialists dealing with Lagrangian transport with new tools for the transport barrier modelling and characterisation.Read moreRead less
Prediction and control of fluid-structure interactions. Fluid-flows create a pressure that can deform the surface of a structure or cause it to vibrate; an extreme example is the fluttering of a flag. Flow-induced vibration of the external panels of vehicles causes damage, noise and can adversely affect performance. This project will develop a wholly new approach for the analysis of these interactions. The versatility and completeness of the approach permits a step-change in the design of panels ....Prediction and control of fluid-structure interactions. Fluid-flows create a pressure that can deform the surface of a structure or cause it to vibrate; an extreme example is the fluttering of a flag. Flow-induced vibration of the external panels of vehicles causes damage, noise and can adversely affect performance. This project will develop a wholly new approach for the analysis of these interactions. The versatility and completeness of the approach permits a step-change in the design of panels, reducing material and manufacturing costs without compromise to safety and performance - an immense benefit for the myriad engineered products or structures that feature flow over a deformable surface. Read moreRead less
Numerical simulation of the fish-like swimming of linked bodies. Although Zoologists have made detailed observations of swimming fish there are still many unanswered questions about how they swim. We do not know how the fins and undulating body work together to produce the high speed of the tuna, or the fast turns of a fish escaping danger. We see dolphins swim through the sea's surface but we don't know if they do that because it is much more efficient. This project is designed to simulate arb ....Numerical simulation of the fish-like swimming of linked bodies. Although Zoologists have made detailed observations of swimming fish there are still many unanswered questions about how they swim. We do not know how the fins and undulating body work together to produce the high speed of the tuna, or the fast turns of a fish escaping danger. We see dolphins swim through the sea's surface but we don't know if they do that because it is much more efficient. This project is designed to simulate arbitrary fish motion and give answers to these and other questions concerning swimming. It may also help humans to swim more efficiently and provide simulation tools for the design of robotic undersea vehicles.Read moreRead less
Taming turbulence: Hydrodynamic stability and flow-structure interaction using grid-free computation. Turbulence is characterized as seemingly disordered fluctuations that impede the progress of an object through a fluid by creating increased frictional or drag forces. Using a new type of fluid-flow simulation, this project will generate advanced understanding of turbulence in the flow over the surface of a vehicle, be it a ship, car, aircraft or within a pipe, with the technological objective o ....Taming turbulence: Hydrodynamic stability and flow-structure interaction using grid-free computation. Turbulence is characterized as seemingly disordered fluctuations that impede the progress of an object through a fluid by creating increased frictional or drag forces. Using a new type of fluid-flow simulation, this project will generate advanced understanding of turbulence in the flow over the surface of a vehicle, be it a ship, car, aircraft or within a pipe, with the technological objective of reducing drag by adhering a compliant skin to the surface. While the correct choice of compliance relies upon understanding very complex flow-structure dynamics, the resulting technology is simple, robust and has low capital and maintenance costs. Clearly, drag reduction reduces fuel costs and lower fuel consumption is environmentally beneficial. Read moreRead less