Geological sequestration of carbon dioxide in deep saline aquifers: coupled flow-mechanical considerations. Deep saline aquifers have been routinely proposed as sites for long-term, large-scale storage of carbon dioxide (CO2) emissions, as an option to assist the abatement of global warming. This project investigates expected engineering behaviour of deep saline aquifer reservoirs and their stability following CO2 sequestration.
The colour of turbulence and the attached eddy hypothesis. This project aims to progress understanding of wall-bounded turbulence. These turbulent fluid flows are ubiquitous in nature and in engineering systems, directly affecting dispersion in the atmosphere and the energy consumption of land, sea and air vehicles. The understanding of these turbulent flows has been limited by a lack of verified theoretical models for the structure of wall turbulence. By combining unprecedented experiments with ....The colour of turbulence and the attached eddy hypothesis. This project aims to progress understanding of wall-bounded turbulence. These turbulent fluid flows are ubiquitous in nature and in engineering systems, directly affecting dispersion in the atmosphere and the energy consumption of land, sea and air vehicles. The understanding of these turbulent flows has been limited by a lack of verified theoretical models for the structure of wall turbulence. By combining unprecedented experiments with a novel dynamical systems approach, this project will enable development of effective turbulence control strategies, enhancing productivity in a wide range of applications. The findings of the research will enable models with predictive capability to design turbulence control schemes.Read moreRead less
The cost of roughness: predicting the drag penalty of fouled ship hulls. Roughness on ship hulls is a prevalent global problem, causing up to 80% increases in resistance compared to ideal smooth surfaces. Targeting a key capability gap, this project aims to build practical tools for predicting the performance penalty in shipping due to hull roughness, requiring only hull observations as an input. Observations made with a custom-built underwater surface scanner will be combined with world-first l ....The cost of roughness: predicting the drag penalty of fouled ship hulls. Roughness on ship hulls is a prevalent global problem, causing up to 80% increases in resistance compared to ideal smooth surfaces. Targeting a key capability gap, this project aims to build practical tools for predicting the performance penalty in shipping due to hull roughness, requiring only hull observations as an input. Observations made with a custom-built underwater surface scanner will be combined with world-first laser-based flow measurements on the hull of an operating ship, and backed-up by complimentary laboratory experiments. This project will deliver an advanced fundamental understanding of hull roughness and enable more informed decisions for ship operators and regulatory bodies, leading to increased shipping efficiency.Read moreRead less
Temperature sensitivity of soil respiration and its components. This project aims to demonstrate how temperate evergreen forests could buffer against climate change. Soil respiration returns around half the carbon taken up by forests to the atmosphere. This project will characterise and quantify how microbes and roots in soils depend on temperature and substrate supply, and so predict how rising temperatures and drought will affect forests as natural carbon sequestration sinks. This project will ....Temperature sensitivity of soil respiration and its components. This project aims to demonstrate how temperate evergreen forests could buffer against climate change. Soil respiration returns around half the carbon taken up by forests to the atmosphere. This project will characterise and quantify how microbes and roots in soils depend on temperature and substrate supply, and so predict how rising temperatures and drought will affect forests as natural carbon sequestration sinks. This project will resolve the roles of environmental drivers of soil respiration across forests; integrate mechanistic understanding of differing plant and microbial responses to temperature within a common modelling framework; and evaluate the implications of this knowledge in predictions of climatic impacts on terrestrial carbon cycling.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
A modelling framework for designing more sustainable urban freight systems. How to improve the sustainability of goods movement in cities is a major challenge for society. City logistics involves numerous stakeholders, including carriers that are small and independent and have difficulty achieving high levels of efficiency. This project aims to develop an integrated modelling framework to facilitate the exploration of novel urban logistics initiatives that are more connected, collaborative, and ....A modelling framework for designing more sustainable urban freight systems. How to improve the sustainability of goods movement in cities is a major challenge for society. City logistics involves numerous stakeholders, including carriers that are small and independent and have difficulty achieving high levels of efficiency. This project aims to develop an integrated modelling framework to facilitate the exploration of novel urban logistics initiatives that are more connected, collaborative, and open. The framework combines agent-based simulation, optimization, artificial intelligence and digital twin technologies to design and evaluate new schemes for improving the efficiency, reliability, and sustainability of urban logistics systems, which will alleviate congestion and the need for new road infrastructure.Read moreRead less
An innovative mechanism for optimising freeway traffic efficiency, safety, and sustainability via variable speed limit control. Congestion, safety, and emissions are three major traffic problems threatening the Australian economy. This project aims to develop a novel approach to collectively handle these problems for freeway traffic using variable speed limits (VSL). The project tasks address modelling, VSL controller design and automatic fine tuning of VSL controllers.
Advanced membranes for energy-efficient electrochemical conversion of carbon dioxide to fuel. This project proposes to develop a technology to convert carbon dioxide to liquid fuels using renewable energy as the required energy source. The project will therefore help in the mitigation of carbon dioxide emissions and offset the depletion of fossil fuel reserves.
Making best use of biofuels – understanding the interactions between alcohol and hydrocarbon fuels in engine combustion. Biofuels are increasingly used as blending components for transport fuels. Biofuels possess much different chemical structures from conventional fuels, and can therefore interact with hydrocarbon fuels during engine combustion processes and consequently affect engine efficiency and emissions. This project aims to investigate the chemical interactions between representative com ....Making best use of biofuels – understanding the interactions between alcohol and hydrocarbon fuels in engine combustion. Biofuels are increasingly used as blending components for transport fuels. Biofuels possess much different chemical structures from conventional fuels, and can therefore interact with hydrocarbon fuels during engine combustion processes and consequently affect engine efficiency and emissions. This project aims to investigate the chemical interactions between representative compounds of biofuels (ethanol) and fossil fuels (n-heptane, iso-octane and toluene) during engine autoignition processes. The outcomes will fill a significant gap in our understanding for biofuel combustion chemistry, essential for building predictive combustion models, and will guide the best use of the precious Australian biofuel resources to reduce carbon dioxide emissions. Read moreRead less
Turbulent flow over surfaces with spatially varying roughness. This project aims to improve understanding of the effect of spatial roughness transitions on turbulent flows. Fluids flowing over non-smooth surfaces influence our daily lives, such as water moving through a pipe, wind blowing over the Earth's surface or aircraft moving through air. The presence of surface roughness profoundly influences these flows. Though engineers have learnt to deal effectively with evenly distributed roughness, ....Turbulent flow over surfaces with spatially varying roughness. This project aims to improve understanding of the effect of spatial roughness transitions on turbulent flows. Fluids flowing over non-smooth surfaces influence our daily lives, such as water moving through a pipe, wind blowing over the Earth's surface or aircraft moving through air. The presence of surface roughness profoundly influences these flows. Though engineers have learnt to deal effectively with evenly distributed roughness, this is seldom encountered in reality. Rather, there are abrupt changes in roughness, for example at the edges of wind-farms or at rivets on aircraft. This project aims to investigate these important, but little understood, turbulent flows. Potential benefits include improved simulation, more efficient vehicle design and improved atmospheric and climate models.Read moreRead less