Discovery Early Career Researcher Award - Grant ID: DE240100933
Funder
Australian Research Council
Funding Amount
$458,183.00
Summary
Noise-reduction mechanisms in jet engines: chevrons are the answer. This project aims to develop new models to study the influence of chevrons on the exhaust of aircraft engines, which is one of the strongest sound sources during take-off. As constant exposure to high-amplitude noise in areas close to airports leads to a myriad of health problems, new strategies have been sought to mitigate this noise component. Chevrons may modify the dynamics of the noise-generating coherent structures, but mo ....Noise-reduction mechanisms in jet engines: chevrons are the answer. This project aims to develop new models to study the influence of chevrons on the exhaust of aircraft engines, which is one of the strongest sound sources during take-off. As constant exposure to high-amplitude noise in areas close to airports leads to a myriad of health problems, new strategies have been sought to mitigate this noise component. Chevrons may modify the dynamics of the noise-generating coherent structures, but most of their parameters are chosen by trial and error, and the mechanism that maximises noise reduction is not clear. By understanding the underlying noise-reduction mechanisms, this project will facilitate the optimal design of quieter exhaust nozzles, ameliorating the effect of aircraft noise on the local community.Read moreRead less
Bubble clouds in ocean waves. This project aims to predict the behaviour of bubble clouds in ocean waves. Bubble clouds are used in Europe to shield marine mammals from the dangerous noise of offshore wind-turbine construction, but would be dispersed by Australia's ocean swell and turbulence; and unlike in Europe, Australia's offshore-wind sites are frequented by endangered whales. Bubble clouds from breaking waves may also dissolve up to third of humanity's carbon in the ocean. Experiments and ....Bubble clouds in ocean waves. This project aims to predict the behaviour of bubble clouds in ocean waves. Bubble clouds are used in Europe to shield marine mammals from the dangerous noise of offshore wind-turbine construction, but would be dispersed by Australia's ocean swell and turbulence; and unlike in Europe, Australia's offshore-wind sites are frequented by endangered whales. Bubble clouds from breaking waves may also dissolve up to third of humanity's carbon in the ocean. Experiments and coordinated numerical simulations would predict the displacement and dispersion of bubbles in oceanic conditions. Experiments and simulations would then predict the acoustic behaviour of bubble clouds. This outcome would benefit new offshore-wind industries and climate science.Read moreRead less
A study of China’s south to north water transfer project. This project aims to investigate the motives, processes, and socio-political and hydrological consequences of the South-North Water Transfer (SNWT) in China, the world’s largest inter-basin water network. It connects four major river basins, six provinces, three megacities and over 700 million people. This project will analyse the SNWT's governance regime; its effects on local and regional flows of water, money, people, pollutants, produc ....A study of China’s south to north water transfer project. This project aims to investigate the motives, processes, and socio-political and hydrological consequences of the South-North Water Transfer (SNWT) in China, the world’s largest inter-basin water network. It connects four major river basins, six provinces, three megacities and over 700 million people. This project will analyse the SNWT's governance regime; its effects on local and regional flows of water, money, people, pollutants, production and political authority; and the interactions between these systemic and local changes. This project expects to produce knowledge about the politics of vast technologies, and the management of inter-basin water schemes in Australia and globally.Read moreRead less
Carbon in a Bubble: Cavitation in Ionic Liquids. This project aims to investigate the potential of pressure-driven phase change as an energy-efficient mechanism for removing dissolved gases from low melting point salts, by advancing understanding of the cavitation behaviour of ionic liquids. This project expects to generate new knowledge in the area of fluid mechanics through an innovative combination of advanced computational simulations and synchrotron X-ray measurement techniques developed by ....Carbon in a Bubble: Cavitation in Ionic Liquids. This project aims to investigate the potential of pressure-driven phase change as an energy-efficient mechanism for removing dissolved gases from low melting point salts, by advancing understanding of the cavitation behaviour of ionic liquids. This project expects to generate new knowledge in the area of fluid mechanics through an innovative combination of advanced computational simulations and synchrotron X-ray measurement techniques developed by the investigators. Expected outcomes of this project include expanded understanding of the physics of ionic liquids, and the ability to engineer more efficient gas separation systems. The project aims to benefit the chemical and energy sectors through improved energy efficiency.Read moreRead less
Tracking flood waters over Australia using space gravity data. This project aims to assess the utility of near-real-time data from the currently operating space gravity satellite mission to quantify and track flood waters in Australia. Through analysis of the satellite data and fusion of observed signals with rainfall, river flows and conventional hydrological modelling, it expects to create new knowledge of soil moisture and movement of flood waters. Expected outcomes include a capability to im ....Tracking flood waters over Australia using space gravity data. This project aims to assess the utility of near-real-time data from the currently operating space gravity satellite mission to quantify and track flood waters in Australia. Through analysis of the satellite data and fusion of observed signals with rainfall, river flows and conventional hydrological modelling, it expects to create new knowledge of soil moisture and movement of flood waters. Expected outcomes include a capability to improve hydrological models by including the information of water signals obtained from the near-real-time observations. This should provide significant benefits such as more accurate land saturation maps and better predictions of runoff and flood risk.Read moreRead less
Reducing rocket resonance is the key to safer spaceflight. This fellowship considers a particularly dangerous component of rocket launch, which is the potential for destructive feedback loops to form either in the nozzle, or between the nozzle and the launch pad. CI Edgington-Mitchell is a world leader in the study of resonance in jet engines, having developed best-in-field methodologies for the problem. In this innovative fellowship, he will apply these methodologies to better understand the da ....Reducing rocket resonance is the key to safer spaceflight. This fellowship considers a particularly dangerous component of rocket launch, which is the potential for destructive feedback loops to form either in the nozzle, or between the nozzle and the launch pad. CI Edgington-Mitchell is a world leader in the study of resonance in jet engines, having developed best-in-field methodologies for the problem. In this innovative fellowship, he will apply these methodologies to better understand the dangerous resonances that can occur during rocket launch, using a combination of experimental, numerical, and theoretical techniques, in partnership with NASA, Stanford, and the CNRS.Read moreRead less
The fluid mechanics of dynamically constricted tubes in pulsatile flow. This project is aimed at advancing the fundamental understanding of flow instability, the transition to turbulence and the effect on wall shear stress, in a dynamically constricted tube flow. The project will provide the first accurately resolved experimental flow analysis, using tomographic particle imaging velocimetry and 3D laser doppler anemometry, conducted on a novel experimental model, and will resolve, for the first ....The fluid mechanics of dynamically constricted tubes in pulsatile flow. This project is aimed at advancing the fundamental understanding of flow instability, the transition to turbulence and the effect on wall shear stress, in a dynamically constricted tube flow. The project will provide the first accurately resolved experimental flow analysis, using tomographic particle imaging velocimetry and 3D laser doppler anemometry, conducted on a novel experimental model, and will resolve, for the first time, turbulence characteristics of the dynamic constriction, using direct numerical simulation with a novel moving boundary implementation. The outcomes will provide the key link between fluid mechanics and wall shear stress, allowing future progress to be made in elucidating the causes of cardiovascular disease.
Read moreRead less
Dynamics of Suppressed Mixing Regimes in Australian Rivers. This study aims to further the fundamental science of turbulent mixing in the context of flow in Australian rivers. The focus is on prolonged low flow conditions which when coupled with warm surface temperatures cause the water column to become thermally stratified which then suppresses turbulent mixing. The extreme scale of the river systems has made investigating the true dynamics of the strongly stratified mixing regimes particularly ....Dynamics of Suppressed Mixing Regimes in Australian Rivers. This study aims to further the fundamental science of turbulent mixing in the context of flow in Australian rivers. The focus is on prolonged low flow conditions which when coupled with warm surface temperatures cause the water column to become thermally stratified which then suppresses turbulent mixing. The extreme scale of the river systems has made investigating the true dynamics of the strongly stratified mixing regimes particularly challenging. By taking world first in-situ measurements of turbulent mixing and undertaking high resolution numerical simulations this study will provide definitive data which will allow correct characterization of the mixing regimes and how they are associated with river flow conditions.Read moreRead less
Water availability and demand: better forecasts, better management. This project aims to improve Australia’s capability in the provision and use of water forecasts for managing water resources. The current water forecasts are not fully utilised by water agencies as they are not sufficiently comprehensive and advanced. This project expects to achieve a step change in the uptake and utility of hydro-climate forecasts through an extensive partnership of leading researchers and operational agencies ....Water availability and demand: better forecasts, better management. This project aims to improve Australia’s capability in the provision and use of water forecasts for managing water resources. The current water forecasts are not fully utilised by water agencies as they are not sufficiently comprehensive and advanced. This project expects to achieve a step change in the uptake and utility of hydro-climate forecasts through an extensive partnership of leading researchers and operational agencies of hydro-climate forecasting, with federal, state and regional water agencies.Read moreRead less
Australian Laureate Fellowships - Grant ID: FL190100164
Funder
Australian Research Council
Funding Amount
$3,336,000.00
Summary
Water Justice: Indigenous Water Valuation and Resilient Decision-making . The aim is to value water and support resilient decision-making for water justice. Its significance is to provide missing socio-cultural-environmental values of First Peoples water, the absence of which means Indigenous demands for water justice are frequently ignored. Project outcomes will empower First Peoples and support resilient and evidence-based decision-making. The key benefit is a sustainable Australia through: fi ....Water Justice: Indigenous Water Valuation and Resilient Decision-making . The aim is to value water and support resilient decision-making for water justice. Its significance is to provide missing socio-cultural-environmental values of First Peoples water, the absence of which means Indigenous demands for water justice are frequently ignored. Project outcomes will empower First Peoples and support resilient and evidence-based decision-making. The key benefit is a sustainable Australia through: first-ever conjoint socio-cultural values of First Peoples’ water; transformative decision-making to account for Indigenous values and risks (such as droughts); and a Water Justice Hub to create a generation of scholars in integrated water valuation, resilient decision-making, and Traditional Water Knowledge. Read moreRead less