Entrainment and Mixing in Turbulent Negatively Buoyant Jets and Fountains. The project intends to develop tools to accurate predict fountain flows. Volcanic eruptions, building ventilation and brine discharge from desalination plants are all examples of turbulent fountains and negatively buoyant jets. The project aims to conduct an investigation into the turbulent structure of fountains and negatively buoyant jets using numerical simulation and laboratory experiments, and to assess the accuracy ....Entrainment and Mixing in Turbulent Negatively Buoyant Jets and Fountains. The project intends to develop tools to accurate predict fountain flows. Volcanic eruptions, building ventilation and brine discharge from desalination plants are all examples of turbulent fountains and negatively buoyant jets. The project aims to conduct an investigation into the turbulent structure of fountains and negatively buoyant jets using numerical simulation and laboratory experiments, and to assess the accuracy of the commonly used integral models and test the effect of the use of more accurate entrainment relations. This may have a range of applications – enabling better prediction of environmental impacts, reduction of the adverse effects of the discharge of pollutants, and reduction in energy consumption in building ventilation and other industrial applications.Read moreRead less
Thermal stratification, overturning and mixing in riverine environments. Thermal stratification is common in Australia's rivers due to our hot, drought-prone climate and high human demands relative to available supply, which has led to a significant reduction in flows relative to natural levels. Thermal stratification inhibits mixing, creating stagnant conditions characterised by low oxygen levels and increased concentrations of contaminants, leading to algal blooms, fish kills and systemic dama ....Thermal stratification, overturning and mixing in riverine environments. Thermal stratification is common in Australia's rivers due to our hot, drought-prone climate and high human demands relative to available supply, which has led to a significant reduction in flows relative to natural levels. Thermal stratification inhibits mixing, creating stagnant conditions characterised by low oxygen levels and increased concentrations of contaminants, leading to algal blooms, fish kills and systemic damage to ecosystems. The aim of this project is to develop predictive models for the effects of physical processes such as night-time cooling, wind, turbulence and currents on riverine thermal stratification. This is expected to enable a more accurate determination of the flow rates required to maintain the health of our river systems.Read moreRead less
Investigation and optimisation of displacement ventilation and cooling systems. An accurate optimisation design tool for cooling and ventilation will be of considerable benefit to the Australian building/construction industry, and will lead to a reduction in energy consumption, thereby reducing both consumer costs and Australia's total greenhouse gas output, as well as providing Australian industry with a competitive advantage. Turbulence modelling for stratified fluids is one of the grand chall ....Investigation and optimisation of displacement ventilation and cooling systems. An accurate optimisation design tool for cooling and ventilation will be of considerable benefit to the Australian building/construction industry, and will lead to a reduction in energy consumption, thereby reducing both consumer costs and Australia's total greenhouse gas output, as well as providing Australian industry with a competitive advantage. Turbulence modelling for stratified fluids is one of the grand challenge areas of science, and graduate students and postdoctoral researchers trained in this area will be well placed to make a significant contribution to the new technologies needed to address the major environmental problems currently being faced.Read moreRead less
Turbulent fountains in stratified fluids with opposing buoyancy flux. Improved design tools will be developed for use in industries which must deal with turbulent fountains in stratified fluids. These tools will assist in the design of more efficient apparatus, reducing energy consumption and thereby reducing both consumer costs and Australia's total greenhouse gas output, as well as providing Australian industry with a competitive advantage. Turbulence modelling for stratified fluids is one of ....Turbulent fountains in stratified fluids with opposing buoyancy flux. Improved design tools will be developed for use in industries which must deal with turbulent fountains in stratified fluids. These tools will assist in the design of more efficient apparatus, reducing energy consumption and thereby reducing both consumer costs and Australia's total greenhouse gas output, as well as providing Australian industry with a competitive advantage. Turbulence modelling for stratified fluids is one of the grand challenge areas of science, and graduate students and postdoctoral researchers trained in this will provide continuing service to Australia in many areas of advanced engineering and science. Read moreRead less
An Investigation Into Fountains Interacting With Both Free Surface and Solid Boundaries. This project will produce an improved understanding of the behavior of fountains interacting with both free surface and solid boundaries. Such flows occur in many environmental and industrial processes and, in particular, the interaction of fountain with boundaries will have a significant influence on the overall performance of the processes. This investigation will combine experiments, numerical simulations ....An Investigation Into Fountains Interacting With Both Free Surface and Solid Boundaries. This project will produce an improved understanding of the behavior of fountains interacting with both free surface and solid boundaries. Such flows occur in many environmental and industrial processes and, in particular, the interaction of fountain with boundaries will have a significant influence on the overall performance of the processes. This investigation will combine experiments, numerical simulations and scaling analysis to provide new insight into the physics governing the behavior of these impinging fountains. Turbulence models will be developed and validated and scaling formulae will be obtained providing relationships for the basic flow properties in terms of the control parameters.Read moreRead less
Enhancing natural convection heat transfer using a single horizontal non-metallic fin. This project will develop the basis for a simple design to improve the energy efficiency of natural convection heat exchangers. Heat exchangers are widely adopted in many electronic devices and industrial processes as they require no external power input, additional space, and are quiet, reliable and economical. The research will exploit the interaction between two flows to trigger turbulence, and will result ....Enhancing natural convection heat transfer using a single horizontal non-metallic fin. This project will develop the basis for a simple design to improve the energy efficiency of natural convection heat exchangers. Heat exchangers are widely adopted in many electronic devices and industrial processes as they require no external power input, additional space, and are quiet, reliable and economical. The research will exploit the interaction between two flows to trigger turbulence, and will result in an increase of the overall capacity and performance of engineering systems. This will contribute significantly to reductions in power consumption and improvements in productivity and work environment, leading ultimately to reductions in greenhouse gas emissions and to economic benefits.Read moreRead less
Design tools for optimising data centre layout to minimise energy usage. Data centres are major consumers of energy worldwide, mainly through the need to cool the equipment. It has become imperative to develop the science for reducing this consumption. Rising computing demand, increasing power density, and increasing infrastructure and energy costs are major issue for data centres around the world. Our research will provide a powerful alternative to conventional thermal management techniques for ....Design tools for optimising data centre layout to minimise energy usage. Data centres are major consumers of energy worldwide, mainly through the need to cool the equipment. It has become imperative to develop the science for reducing this consumption. Rising computing demand, increasing power density, and increasing infrastructure and energy costs are major issue for data centres around the world. Our research will provide a powerful alternative to conventional thermal management techniques for cooling high-density heat loads in mixed-density environments. We will address the key issue of energy minimisation through a detailed flow analyses by the use of numerical simulations and optimisation algorithms.Read moreRead less
The dynamics of turbulent entrainment in sheared convective boundary layers. This project aims to develop general laws to enable the accurate prediction of boundary layer entrainment processes. This will be significant in a wide range of environmental and engineering applications. In particular, the current lack of understanding of this area is a major source of uncertainty in the latest generation of global climate models.
Transport by Natural Convection in Reservoir Sidearms. This project is a first step in developing models of the distribution of water quality parameters in reservoirs by a range of small scale dynamical processes not included in commercial water quality models. Specifically, the project will investigate the transport of suspended materials from the shore to the deeper parts resulting from the interaction of the meteorological forcing and the topography. This will contribute to the development of ....Transport by Natural Convection in Reservoir Sidearms. This project is a first step in developing models of the distribution of water quality parameters in reservoirs by a range of small scale dynamical processes not included in commercial water quality models. Specifically, the project will investigate the transport of suspended materials from the shore to the deeper parts resulting from the interaction of the meteorological forcing and the topography. This will contribute to the development of improved water quality models, and therefore to better management of water quality of Australia's water resources.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE160100194
Funder
Australian Research Council
Funding Amount
$250,000.00
Summary
Optical diagnostics for the investigation of high-speed energetic processes. Optical diagnostics for the investigation of high-speed energetic processes:
The project seeks to establish equipment to enable the investigation of high-speed energetic processes. Such processes, where large amounts of energy are released over a short time frame, occur in nature and almost every field of science and engineering, and their investigation is a formidable challenge. This challenge is designed to be met th ....Optical diagnostics for the investigation of high-speed energetic processes. Optical diagnostics for the investigation of high-speed energetic processes:
The project seeks to establish equipment to enable the investigation of high-speed energetic processes. Such processes, where large amounts of energy are released over a short time frame, occur in nature and almost every field of science and engineering, and their investigation is a formidable challenge. This challenge is designed to be met through the combined use of state-of-the-art flow visualisation, thermography and spectrometry equipment. These diagnostics would open avenues into so far impossible or difficult to conduct research on highly transient phenomena in various research fields, which include various aspects of fluid mechanics, combustion, and fracture mechanics. The equipment would be instrumental in the design of better and innovative machines, materials, instruments and processes.Read moreRead less