Linkage Infrastructure, Equipment And Facilities - Grant ID: LE100100222
Funder
Australian Research Council
Funding Amount
$440,000.00
Summary
Time-resolved tomographic particle image velocimetry facility. The experimental information gained from measurements provided by this infrastructure will lead to significant advances in understanding turbulent flows and the dynamics of solid structures, which will impact a broad range of engineering and geophysical fields. Some specific examples include the development of efficient turbulence control strategies for the reduction of skin-friction drag and improved combustion processes, resulting ....Time-resolved tomographic particle image velocimetry facility. The experimental information gained from measurements provided by this infrastructure will lead to significant advances in understanding turbulent flows and the dynamics of solid structures, which will impact a broad range of engineering and geophysical fields. Some specific examples include the development of efficient turbulence control strategies for the reduction of skin-friction drag and improved combustion processes, resulting in not only better fuel efficiency for vehicles but also reduced CO2 and pollutant emissions. Significant advances can also be made in understanding the dispersion of pollutants in the atmosphere, wind turbine design and the development of lighter and stronger intelligent materials with improved fatigue life.Read moreRead less
The Transitional and Turbulent Structure of Rotating Disk Boundary Layers. Design optimization in areas of energy, materials processing, manufacturing and aerodynamics often depends on fluid flows adjacent to surfaces (wall-flows), and many such flows are three-dimensional (3-D). At present, 3-D wall-flows are poorly understood, and thus we aim to provide the first comprehensive study of the prototypical 3-D wall-flow on a rotating disk. Experiments in a bespoke facility will cover the importan ....The Transitional and Turbulent Structure of Rotating Disk Boundary Layers. Design optimization in areas of energy, materials processing, manufacturing and aerodynamics often depends on fluid flows adjacent to surfaces (wall-flows), and many such flows are three-dimensional (3-D). At present, 3-D wall-flows are poorly understood, and thus we aim to provide the first comprehensive study of the prototypical 3-D wall-flow on a rotating disk. Experiments in a bespoke facility will cover the important flow regimes (transitional and turbulent), and novel sensors will quantify the detailed 3-D flow structure. By clarifying critical instability scenarios and revealing turbulent flow scaling structure, this project will fundamentally advance physical understanding and analytical and computational models of 3-D wall-flowsRead moreRead less
Elucidating the inertial force mechanisms of turbulence. The turbulent flow of fluids (for example, air, water) near a solid surface is of enormous technological importance. The proposed research will advance engineering prediction and control capabilities by revealing how the unsteady eddying motions produce the apparent inertial force that distinguishes turbulent flows from their laminar counterparts.
A novel surface preparation for manipulation of turbulent boundary layers. Australia's geographic isolation means that we are unusually dependent on long-haul transportation systems for sustaining our economy. This project seeks to examine novel surface coatings to reduce the drag of large transport systems. A successful outcome would ultimately reduce Australia's fuel costs and environmental footprint.
Advancing unsteady bluff body aerodynamics: applications to elite cycling. Delivering a better understanding of unsteady wakes has real potential to further our future capabilities of reducing bluff body parasitic drag. The national benefit derived from this project is the advancement of knowledge of a complex fluid mechanics problem, with secondary benefits arising from the specific and practical application to sports aerodynamics. By better understanding the wake structure and its interaction ....Advancing unsteady bluff body aerodynamics: applications to elite cycling. Delivering a better understanding of unsteady wakes has real potential to further our future capabilities of reducing bluff body parasitic drag. The national benefit derived from this project is the advancement of knowledge of a complex fluid mechanics problem, with secondary benefits arising from the specific and practical application to sports aerodynamics. By better understanding the wake structure and its interaction with a locally oscillating bluff body this knowledge can feed into the field of active flow control in the transport sector. The potential for emissions mitigation by lowering aerodynamic losses in the ground transportation section through active aerodynamic control is significant.Read moreRead less
Silencing the screech tone - noise suppression in supersonic jets. The focus of this research is to further develop understanding of the fundamental mechanics of the aeroacoustic phenomenon known as screech. From this deeper understanding a range of tailored control mechanisms are expected to be developed to reduce or eliminate the effects of screech in the engines of high-speed aircraft. The research builds on existing expertise and established experimental facilities. As well as an improved un ....Silencing the screech tone - noise suppression in supersonic jets. The focus of this research is to further develop understanding of the fundamental mechanics of the aeroacoustic phenomenon known as screech. From this deeper understanding a range of tailored control mechanisms are expected to be developed to reduce or eliminate the effects of screech in the engines of high-speed aircraft. The research builds on existing expertise and established experimental facilities. As well as an improved understanding of fundamental mechanism, the expected outcomes of the research are more efficient active and passive flow control devices for the reduction of supersonic jet noise.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE130100088
Funder
Australian Research Council
Funding Amount
$275,000.00
Summary
High-resolution molecular tagging velocimetry and thermometry facility. The facility will simultaneously measure the motion of a fluid and its temperature over an area within a flow. This capability will advance engineering and scientific aims to predict, and potentially control the behaviours of thermally influenced flows that are pervasive in biological, environmental, and energy-related applications.
The underexpanded impinging jet: a self-forcing flow of critical importance. The project aims to support the development and optimisation of a wide range of industrial processing techniques based on an in-depth understanding of receptivity mechanisms in the under-expanded impinging jet flow. Under-expanded impinging jets have broad applications ranging from aerospace propulsion to additive manufacturing to pharmaceutical drug delivery. By elucidating the underlying physics of this highly complex ....The underexpanded impinging jet: a self-forcing flow of critical importance. The project aims to support the development and optimisation of a wide range of industrial processing techniques based on an in-depth understanding of receptivity mechanisms in the under-expanded impinging jet flow. Under-expanded impinging jets have broad applications ranging from aerospace propulsion to additive manufacturing to pharmaceutical drug delivery. By elucidating the underlying physics of this highly complex flow field, the project aims to facilitate active control methodologies in a range of key industrial flows. The expected outcomes of the research include improving the efficiency and efficacy of a number of industrial processes, as well as increased knowledge about the fundamental science.Read moreRead less
Taming turbulence with long-chain polymers. Aerodynamics, hydrodynamics and the efficiency of pumping oil, gas and water through long pipelines can be dramatically improved by reducing the high friction loss caused by turbulent flow. This project will develop the world's largest laboratory turbulent pipe flow facility to test efficiency gains and limitations of polymer addition.
Environmentally sustainable shipping through improved understanding and management of wall-bounded turbulence. The thin region of turbulent flow that is pulled along by a ship's hull as it moves through the water accounts for up to 90 per cent of the overall resistance and a large amount of the fuel burnt. This project aims to control or tame recurrent flow patterns within these turbulent regions to reduce resistance, overall fuel cost and emissions from shipping.