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The effect of diffusive mass transfer on interfacial fluid instabilities. A wide variety of industrial and physiological fluid flows fall into the general class of two-layer fluids wherein a fluid of one density/viscosity flows over another of a different density/viscosity. Such flows can ultimately become turbulent (that is, chaotic) through the growth of small background disturbances. An understanding of this process is important in controlling fluid dynamical mixing. This project will conside ....The effect of diffusive mass transfer on interfacial fluid instabilities. A wide variety of industrial and physiological fluid flows fall into the general class of two-layer fluids wherein a fluid of one density/viscosity flows over another of a different density/viscosity. Such flows can ultimately become turbulent (that is, chaotic) through the growth of small background disturbances. An understanding of this process is important in controlling fluid dynamical mixing. This project will consider two layer flows in the case when diffusive mass transfer acts at the fluid interface with the aim of determining how diffusion affects the process of transition-to-turbulence.Read moreRead less
Enhancement of heat transfer by micro-electro-mechanical devices: numerical and experimental study. The main goal of the present project is to approach a completely new concept for cooling electronic-micro-devices (EMD). We will integrate the cooling system in the EMD by mean of built micro-electro-mechanical systems (MEMS). The area of application is so innovative, that there is no engineering experience for modelling heat transfer at such small physical scales. The first goal of this project ....Enhancement of heat transfer by micro-electro-mechanical devices: numerical and experimental study. The main goal of the present project is to approach a completely new concept for cooling electronic-micro-devices (EMD). We will integrate the cooling system in the EMD by mean of built micro-electro-mechanical systems (MEMS). The area of application is so innovative, that there is no engineering experience for modelling heat transfer at such small physical scales. The first goal of this project is to fill this lack of knowledge and to validate the possible numerical procedure using experimental data obtained from experiments, also planned for the present project. Once a suitable procedure has been established for evaluating heat fluxes , we will optimized configurations for heat transfer enhancers in micro devices.Read moreRead less
A Novel Approach to Determine Permeability for Cost-Effective Manufacturing of Thermoplastic Matrix Composites. The permeability (resistance of a porous rigid body to a permeating fluid) is an essential parameter for predicting impregnation quality in processing of thermoplastic composite materials. No reliable method exists yet to estimate permeabilities without time-consuming and cost intensive experiments. The aim of the proposed research project is to obtain a basic knowledge in determining ....A Novel Approach to Determine Permeability for Cost-Effective Manufacturing of Thermoplastic Matrix Composites. The permeability (resistance of a porous rigid body to a permeating fluid) is an essential parameter for predicting impregnation quality in processing of thermoplastic composite materials. No reliable method exists yet to estimate permeabilities without time-consuming and cost intensive experiments. The aim of the proposed research project is to obtain a basic knowledge in determining permeabilities of fibre architectures by taking into account their stochastic properties. An innovative approach, based on characterisations of meso-structures of fibre network and simulation of computational fluid dynamics, will be developed to accurately determine permeabilities. The outcome will enable more cost-effective manufacturing of thermoplastic matrix composites.Read moreRead less
Dehumidification and cooling driven by solar/waste heat using liquid desiccants. The provision of comfort cooling is responsible for a considerable and increasing portion of the world energy demand and electricity peak demand. To substitute electrically driven vapour compression machines with their high electrical energy consumption and especially high peak loads, the use of solar energy or waste heat for a cooling and dehumidification system driven by liquid desiccants is a promising opportunit ....Dehumidification and cooling driven by solar/waste heat using liquid desiccants. The provision of comfort cooling is responsible for a considerable and increasing portion of the world energy demand and electricity peak demand. To substitute electrically driven vapour compression machines with their high electrical energy consumption and especially high peak loads, the use of solar energy or waste heat for a cooling and dehumidification system driven by liquid desiccants is a promising opportunity. The project utilises the complementary strengths in the research groups to develop practical and economically feasible cooling/dehumidification systems for different types of buildings with different moisture removal and cooling requirements at different locations (Australia, Southern Europe).Read moreRead less
Development of an Automated Control System for Selection of Optimal Process Parameters in Welding Using Solar Energy Concentration. The objective of this proposed research is to develop an intelligent control system for selection of optimal process parameters in welding using solar energy concentration. This investigation endeavours to address the complex interaction between welding process parameters and quality of weld. The results of the work will lead to signicant advancement of knowledge ....Development of an Automated Control System for Selection of Optimal Process Parameters in Welding Using Solar Energy Concentration. The objective of this proposed research is to develop an intelligent control system for selection of optimal process parameters in welding using solar energy concentration. This investigation endeavours to address the complex interaction between welding process parameters and quality of weld. The results of the work will lead to signicant advancement of knowledge in automation of the welding process and will generate global interest due to its innovation and applications in automotive manufacturing and steel fabrication industries. The research activity proposed in this application is expected to further strengthen the links between QUT and Mokpo National University and will enhance the capabilities of both universities in attracting funding from local manufacturing industries.Read moreRead less
Control of Transitions in Wakes and Swirling Flows. We will attack industrially-important problems in fluid mechanics by building new, and substantially enhancing existing, international collaborations between key complementary teams of internationally-recognised French and Australian researchers. Funding will support the exchange of 6 senior staff and 3 graduate students, which, in turn, will measurably benefit the research output of a further 20 graduate students and 7 post-doctoral fellows as ....Control of Transitions in Wakes and Swirling Flows. We will attack industrially-important problems in fluid mechanics by building new, and substantially enhancing existing, international collaborations between key complementary teams of internationally-recognised French and Australian researchers. Funding will support the exchange of 6 senior staff and 3 graduate students, which, in turn, will measurably benefit the research output of a further 20 graduate students and 7 post-doctoral fellows associated with closely-related projects. From the Australian perspective, the planned exchanges will bring new research expertise, knowledge and skills, which will be focussed on a diverse range of applications. Target industries (with existing collaborations) include Airbus and Dassault Aviation in Europe, and Aerosonde and Warman pumps in Australia. Read moreRead less
Low-order dynamical models for non-linear fluid behaviour in quasi two-dimensional plasmas. Two complex systems in which a magnetic field imposes two-dimensional fluid motions are turbulent fusion plasmas and magnetospheric plasmas. A distinctive property of 2D flows is the inverse energy cascade, whereby energy streaming into large-scale vortices, coherent structures, or sheared flows gives a remarkable propensity for self-organizing behaviour. This can be exploited to govern or guide our respo ....Low-order dynamical models for non-linear fluid behaviour in quasi two-dimensional plasmas. Two complex systems in which a magnetic field imposes two-dimensional fluid motions are turbulent fusion plasmas and magnetospheric plasmas. A distinctive property of 2D flows is the inverse energy cascade, whereby energy streaming into large-scale vortices, coherent structures, or sheared flows gives a remarkable propensity for self-organizing behaviour. This can be exploited to govern or guide our response to such systems. We propose to investigate the dynamics of momentum and energy exchange in these plasmas, using reduced dynamical models and bifurcation and stability mathematics. Expected outcomes are improved prediction of magnetospheric substorms and confinement of fusion plasmas.
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Physical factors affecting deposition of combustion submicrometer particles in the human lung. Particles generated from combustion sources have a profound effect on human health, yet there is lack of scientific understanding of the role of different physical mechanisms on particle deposition in the lung. This program will advance scientific knowledge in this field through multidisciplinary efforts of a team from QUT and the University of Salzburg, Austria. It aims at quantification of particle d ....Physical factors affecting deposition of combustion submicrometer particles in the human lung. Particles generated from combustion sources have a profound effect on human health, yet there is lack of scientific understanding of the role of different physical mechanisms on particle deposition in the lung. This program will advance scientific knowledge in this field through multidisciplinary efforts of a team from QUT and the University of Salzburg, Austria. It aims at quantification of particle deposition in human lung through experimental studies and advanced modelling. The program will enhance and strengthen the existing collaboration between the universities and its outcome will be of significance in the vital area of human health and risk assessment.Read moreRead less
Fluctuations in the properties of nonequilibrium fluids and the influence of thermostatting mechanisms. The behaviour of nonequilibrium fluids will be studied by combining ideas from liquid state theory, statistical mechanics and dynamical systems theory. This work will result in development and testing of mathematical expressions (Fluctuation Theorems) that are consistent with the Second Law of Thermodynamics, which determines the direction of any change in any macroscopic system, but are also ....Fluctuations in the properties of nonequilibrium fluids and the influence of thermostatting mechanisms. The behaviour of nonequilibrium fluids will be studied by combining ideas from liquid state theory, statistical mechanics and dynamical systems theory. This work will result in development and testing of mathematical expressions (Fluctuation Theorems) that are consistent with the Second Law of Thermodynamics, which determines the direction of any change in any macroscopic system, but are also applicable to microscopic systems. The expressions will determine the probability that finite sized systems will violate the Second Law for small periods of time and will therefore contribute to development of a fundamental understanding of microscopic systems and the development of nanotechnology.
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Fluid mechanics and physiology of blockages in vascular systems. Vascular disease is a major health problem both in Australia and worldwide. In particular, cardiovascular disease is a major killer of adult Australians. Engineers and mathematicians working with biologists will gain a greater understanding of vascular diseases, a major health problem, including cardiovascular disease, which is one of the biggest killers worldwide, as well as tackling renal circulation problems, which are a signifi ....Fluid mechanics and physiology of blockages in vascular systems. Vascular disease is a major health problem both in Australia and worldwide. In particular, cardiovascular disease is a major killer of adult Australians. Engineers and mathematicians working with biologists will gain a greater understanding of vascular diseases, a major health problem, including cardiovascular disease, which is one of the biggest killers worldwide, as well as tackling renal circulation problems, which are a significant problem and may contribute to hypertension. Detailed measurement and prediction will be undertaken of the mechanical loading and response of cells to their microenvironment, an important first step to controlling pathological responses which lead to a variety of autoimmune problems.Read moreRead less