Airfoil Noise Control in Complex Turbulence. This project aims to understand how to control noise created by the interaction of airfoils with complex, real-world turbulence. This project is significant because it will develop novel serrated and porous leading edges tailored for complex turbulence for the first time. Using innovative experimental and theoretical techniques, the project will dramatically advance the science of aeroacoustics. The expected outcomes of the project will be substantial ....Airfoil Noise Control in Complex Turbulence. This project aims to understand how to control noise created by the interaction of airfoils with complex, real-world turbulence. This project is significant because it will develop novel serrated and porous leading edges tailored for complex turbulence for the first time. Using innovative experimental and theoretical techniques, the project will dramatically advance the science of aeroacoustics. The expected outcomes of the project will be substantial reductions in noise from aircraft, wind turbines, submarines and drones. This will provide significant benefits such as a reduction in environmental noise pollution, better public health and submarines with increased stealth.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE150100094
Funder
Australian Research Council
Funding Amount
$400,000.00
Summary
Development of a world-class facility for three dimensional dynamic testing. Development of a world-class facility for three dimensional dynamic testing: This project aims to establish a world-class facility for multi-directional dynamic testing. Currently there are no such facilities in Australia. The ability to recreate dynamic motion in all available degrees-of-freedom opens up enormous fields of research not currently possible in Australia. This includes such areas as vibration testing, mate ....Development of a world-class facility for three dimensional dynamic testing. Development of a world-class facility for three dimensional dynamic testing: This project aims to establish a world-class facility for multi-directional dynamic testing. Currently there are no such facilities in Australia. The ability to recreate dynamic motion in all available degrees-of-freedom opens up enormous fields of research not currently possible in Australia. This includes such areas as vibration testing, materials testing, biomechanics and human factors, blast and earthquake simulations, field robotics, automotive safety research, flight/vehicle simulation, and marine applications including sloshing of liquids and liquefaction of fines. In conjunction with a 3D laser doppler system this facility will be unique in the world for dynamic mechanical testing.Read moreRead less
Surface roughness and its effects on wall-bounded turbulence. Examples in engineering where turbulence is important are: wind tunnel model testing, numerical prediction of turbulent skin friction drag over an aircraft wing, turbulent forces and acoustic field around a submarine or a road vehicle, and the dispersion of pollutants in the atmosphere. Turbulence may also be beneficial, for example, in improving engine combustion and decreasing pollutant emissions. Hence this study will have national ....Surface roughness and its effects on wall-bounded turbulence. Examples in engineering where turbulence is important are: wind tunnel model testing, numerical prediction of turbulent skin friction drag over an aircraft wing, turbulent forces and acoustic field around a submarine or a road vehicle, and the dispersion of pollutants in the atmosphere. Turbulence may also be beneficial, for example, in improving engine combustion and decreasing pollutant emissions. Hence this study will have national benefits in many scientific fields, for example, in fuel savings (economy and energy ), stability of road vehicles (safety and health), noise generation and acoustic signatures of submarines (transforming defence technology and safeguarding Australia).Read moreRead less
Optimal acoustic design of a composite marine propeller for signature management. Noise of maritime vessels affects passengers, crew and marine life. Composite marine propellers provide significant benefits over metallic propellers as they run more efficiently, thus consuming less fuel and run more smoothly, resulting in improved comfort for passengers and crew. From a military perspective, composite marine propellers provide reduced noise signature, resulting in vessels of greater stealth. Quie ....Optimal acoustic design of a composite marine propeller for signature management. Noise of maritime vessels affects passengers, crew and marine life. Composite marine propellers provide significant benefits over metallic propellers as they run more efficiently, thus consuming less fuel and run more smoothly, resulting in improved comfort for passengers and crew. From a military perspective, composite marine propellers provide reduced noise signature, resulting in vessels of greater stealth. Quieter propellers also significantly reduce the environmental impact of ships on marine life. This project will generate a new class of quiet composite propellers to be utilised by the maritime industry. The technologies developed by this project are applicable to rotors in other industries, such as aircraft, helicopters and wind turbines.Read moreRead less
ACTIVE CONTROL OF SURFACE OCEAN SHIPS. This research is to design nonlinear robust adaptive control systems using active actuators (flaps, fins and rudders) for course keeping and path tracking of surface ocean ships, which are inherently nonlinear and with uncertainties. The outcome of the research will lead to the development of non-linear control strategies, which result in simple-to-implement and effective controllers. These controllers are robust to the environmental disturbances and uncert ....ACTIVE CONTROL OF SURFACE OCEAN SHIPS. This research is to design nonlinear robust adaptive control systems using active actuators (flaps, fins and rudders) for course keeping and path tracking of surface ocean ships, which are inherently nonlinear and with uncertainties. The outcome of the research will lead to the development of non-linear control strategies, which result in simple-to-implement and effective controllers. These controllers are robust to the environmental disturbances and uncertainties, adapt to unknown parameters of the ship and actuators. Only a few control gains are required to be tuned. The success of this project will significantly increase the international competiveness of Australian shipbuilding industry.Read moreRead less
Prediction of radiated noise from marine propellers. Underwater noise radiated from marine vessels is a significant problem for research, fishing and military vessels, and is a major source of pollution in the marine environment. The major source contributing to underwater noise is due to the propeller. This work will develop numerical models with experimental validation that can accurately predict the sources of noise generated by marine propellers and acoustic signatures of marine vessels due ....Prediction of radiated noise from marine propellers. Underwater noise radiated from marine vessels is a significant problem for research, fishing and military vessels, and is a major source of pollution in the marine environment. The major source contributing to underwater noise is due to the propeller. This work will develop numerical models with experimental validation that can accurately predict the sources of noise generated by marine propellers and acoustic signatures of marine vessels due to propeller motion. This work has great significance for Australia’s construction and military maritime industries. The technologies developed in this project are also applicable to rotors in other industries such as in aircraft, helicopters and wind turbines.Read moreRead less
Structure, Dynamics and Control of Wall-Bounded Turbulence. This research has immense impact in engineering and environmental science including aeronautical, mechanical, biomedical engineering, and meteorological science. The energy savings with reduction in carbon dioxide (CO2) emissions resulting from this research and economic benefits will impact directly on global climate change and a sustainable urban environment in Australia. This research will deliver technological advances in complex fl ....Structure, Dynamics and Control of Wall-Bounded Turbulence. This research has immense impact in engineering and environmental science including aeronautical, mechanical, biomedical engineering, and meteorological science. The energy savings with reduction in carbon dioxide (CO2) emissions resulting from this research and economic benefits will impact directly on global climate change and a sustainable urban environment in Australia. This research will deliver technological advances in complex fluid dynamics and instrumentation, in addition to new and exciting training opportunities for future generations of researchers and engineers. This project will secure Australian science and engineering as world leaders in the crucial area of Fluid Dynamics that influences our everyday lives.
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Cyclic Fatigue Mechanisms in New Lead-Free Piezoelectric Ceramics. Piezoceramics are an important component in many items in modern day Australian life. However, they present a growing environmental concern, particularly for disposal, because they contain lead oxide and must often be disposed of prematurely due to component failure. Furthermore, many key Australian industries manufacture and use piezoceramics in fields ranging from mineral exploration, to imaging to biomedical devices. This proj ....Cyclic Fatigue Mechanisms in New Lead-Free Piezoelectric Ceramics. Piezoceramics are an important component in many items in modern day Australian life. However, they present a growing environmental concern, particularly for disposal, because they contain lead oxide and must often be disposed of prematurely due to component failure. Furthermore, many key Australian industries manufacture and use piezoceramics in fields ranging from mineral exploration, to imaging to biomedical devices. This project will enable the development of lead-free alternatives to current materials and more reliable materials which will reduce the need for waste disposal.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE150101528
Funder
Australian Research Council
Funding Amount
$345,000.00
Summary
Resolving the mechanics of wall-mounted finite airfoil noise production. Noise from air transportation and wind turbines is a rapidly growing component of environmental noise pollution that must be reduced to improve public health and well-being. A submarine must also have a low acoustic signature to ensure its stealthiness. The common source of noise generation among these technologies is the airfoil, yet we do not understand how they create noise in real, complex environments. This project aim ....Resolving the mechanics of wall-mounted finite airfoil noise production. Noise from air transportation and wind turbines is a rapidly growing component of environmental noise pollution that must be reduced to improve public health and well-being. A submarine must also have a low acoustic signature to ensure its stealthiness. The common source of noise generation among these technologies is the airfoil, yet we do not understand how they create noise in real, complex environments. This project aims to understand how fluid flow interacts with a wall-mounted finite airfoil to produce sound. The project aims to identify the noise producing physics via a novel wind tunnel experiment and numerical study. This enhanced understanding will create better airfoil noise prediction and control strategies in the future.Read moreRead less
Understanding and predicting airfoil noise in real-world turbulence. This project aims to understand and predict the noise produced by turbulence interacting with an airfoil to advance the design of aeroengines, wind turbines, marine vessels, cooling fans and drones. A novel anechoic wind tunnel experiment is proposed to link complex turbulent in-flow with the behaviour of the flow as it interacts with the airfoil and the noise-producing physics. The intended outcomes of this project are new sem ....Understanding and predicting airfoil noise in real-world turbulence. This project aims to understand and predict the noise produced by turbulence interacting with an airfoil to advance the design of aeroengines, wind turbines, marine vessels, cooling fans and drones. A novel anechoic wind tunnel experiment is proposed to link complex turbulent in-flow with the behaviour of the flow as it interacts with the airfoil and the noise-producing physics. The intended outcomes of this project are new semi-analytical noise prediction models and scientific knowledge that can be harnessed for practical noise control. Anticipated benefits include quiet aerospace, naval and renewable energy technologies, reduced environmental noise pollution and better quality of life.Read moreRead less