Understanding particle-laden flows for clean high temperature processes. This project aims to understand and provide computational design tools for the complex heat and mass transfer processes within the new technologies that needed for the high temperature processing of minerals with low net carbon dioxide (CO2) emissions, both with and without the use of concentrated solar thermal energy. These models are needed to achieve low-cost scale-up and development of the new technologies under develop ....Understanding particle-laden flows for clean high temperature processes. This project aims to understand and provide computational design tools for the complex heat and mass transfer processes within the new technologies that needed for the high temperature processing of minerals with low net carbon dioxide (CO2) emissions, both with and without the use of concentrated solar thermal energy. These models are needed to achieve low-cost scale-up and development of the new technologies under development, because they operate in regimes of particle-laden flow for which present numerical design tools are unreliable. The project will underpin the development of new technologies that are needed for Australia to meet its greenhouse emissions targets and to capitalise on the anticipated global demand for low-carbon-intensive metals and other value-added products.Read moreRead less
Machine Learning and Shape Optimisation of Fluid-Structure Interactions. This project aims to address vibrations of solid structures by utilising a combination of advanced experimental and computational methods. This project expects to generate new knowledge in the area of flow-induced vibrations utilising the new techniques of machine learning and evolutionary shape optimisation. Expected outcomes of this project include greatly accelerated discovery of mechanisms leading to structural vibratio ....Machine Learning and Shape Optimisation of Fluid-Structure Interactions. This project aims to address vibrations of solid structures by utilising a combination of advanced experimental and computational methods. This project expects to generate new knowledge in the area of flow-induced vibrations utilising the new techniques of machine learning and evolutionary shape optimisation. Expected outcomes of this project include greatly accelerated discovery of mechanisms leading to structural vibrations and optimising structure geometries to either enhance or suppress the vibrations. This should provide significant benefits, such as the design strategies for improved energy harvesters, such as current oscillators, or more stable structures, such as platforms for offshore wind turbines.
Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE200101650
Funder
Australian Research Council
Funding Amount
$412,700.00
Summary
Intelligent active control of flow-induced vibration. This project aims to develop advanced and effective control methods using an innovative interdisciplinary approach for flow-induced vibration for a wide range of generic elements of engineering structures. This project expects to generate new scientific knowledge of fluid-structure interaction that is essential for the prediction and control of flow-induced vibration. The expected outcomes of this project are artificial intelligence based act ....Intelligent active control of flow-induced vibration. This project aims to develop advanced and effective control methods using an innovative interdisciplinary approach for flow-induced vibration for a wide range of generic elements of engineering structures. This project expects to generate new scientific knowledge of fluid-structure interaction that is essential for the prediction and control of flow-induced vibration. The expected outcomes of this project are artificial intelligence based active control methods for flow-induced vibration. Ultimately, this project should provide significant benefits, such as advances in scientific knowledge and improved technologies for the areas of energy, transport, buildings and infrastructure.Read moreRead less
Enhancing passive cooling using flexible baffles. The project aims to develop a novel passive strategy using fluid-structure-thermal interactions to enhance passive cooling by natural convection and improve the energy efficiency of engineering systems. Comparing to the existing strategies, the new strategy does not require driving fan or pump and is quiet, reliable, self-adaptive and economical. The Multiphysics embodied in the proposal is at the leading edge of the field. Expected outcomes incl ....Enhancing passive cooling using flexible baffles. The project aims to develop a novel passive strategy using fluid-structure-thermal interactions to enhance passive cooling by natural convection and improve the energy efficiency of engineering systems. Comparing to the existing strategies, the new strategy does not require driving fan or pump and is quiet, reliable, self-adaptive and economical. The Multiphysics embodied in the proposal is at the leading edge of the field. Expected outcomes include advanced understanding of the complex Multiphysics and design rules for enhancing passive cooling by natural convection using flexible baffles. The research is expected to bring direct economic benefit to relevant industry and significant environmental and social benefit to the general public.Read moreRead less
The Transitional and Turbulent Structure of Rotating Disk Boundary Layers. Design optimization in areas of energy, materials processing, manufacturing and aerodynamics often depends on fluid flows adjacent to surfaces (wall-flows), and many such flows are three-dimensional (3-D). At present, 3-D wall-flows are poorly understood, and thus we aim to provide the first comprehensive study of the prototypical 3-D wall-flow on a rotating disk. Experiments in a bespoke facility will cover the importan ....The Transitional and Turbulent Structure of Rotating Disk Boundary Layers. Design optimization in areas of energy, materials processing, manufacturing and aerodynamics often depends on fluid flows adjacent to surfaces (wall-flows), and many such flows are three-dimensional (3-D). At present, 3-D wall-flows are poorly understood, and thus we aim to provide the first comprehensive study of the prototypical 3-D wall-flow on a rotating disk. Experiments in a bespoke facility will cover the important flow regimes (transitional and turbulent), and novel sensors will quantify the detailed 3-D flow structure. By clarifying critical instability scenarios and revealing turbulent flow scaling structure, this project will fundamentally advance physical understanding and analytical and computational models of 3-D wall-flowsRead moreRead less
Large Scale Natural Convection Boundary Layers with Non-Boussinesq Effects. This proposal aims to understand and predict heat transfer by turbulent natural convection in two scenarios, firstly at very large environmental scales, such as occur on melting Antarctic ice sheets, and secondly convection involving very large temperature differences such as occur in solar thermal power plants and industrial processes. These natural convection flow regimes are incredibly difficult to investigate directl ....Large Scale Natural Convection Boundary Layers with Non-Boussinesq Effects. This proposal aims to understand and predict heat transfer by turbulent natural convection in two scenarios, firstly at very large environmental scales, such as occur on melting Antarctic ice sheets, and secondly convection involving very large temperature differences such as occur in solar thermal power plants and industrial processes. These natural convection flow regimes are incredibly difficult to investigate directly but by focusing on the fundamental dynamics of the turbulent flows using large scale numerical simulations and innovative experiments, the project is expected to develop better analytical and computational models which will underpin improvements in
global ocean models and improve energy efficiency.Read moreRead less
Flame stabilisation and structure in axially staged combustion. We aim to improve fundamental understanding of flame stabilisation and structure in conditions relevant to axially staged combustion employed in gas turbines, in which an initial ultra-lean premixed stage is followed by a short residence time stage at higher equivalence ratios. This concept enables high turbine entry temperatures and thus high efficiency while limiting emissions of nitrogen oxides, and, importantly, enables improved ....Flame stabilisation and structure in axially staged combustion. We aim to improve fundamental understanding of flame stabilisation and structure in conditions relevant to axially staged combustion employed in gas turbines, in which an initial ultra-lean premixed stage is followed by a short residence time stage at higher equivalence ratios. This concept enables high turbine entry temperatures and thus high efficiency while limiting emissions of nitrogen oxides, and, importantly, enables improved operational flexibility in turndown and in burning fuels with different reactivities, such as hydrogen. This project will apply large-scale direct numerical simulations to advance fundamental understanding of this unusual combustion mode, and develop practical models able to predict its behaviour.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE180100157
Funder
Australian Research Council
Funding Amount
$366,446.00
Summary
Impact of spatially uniform and irregular rough surfaces on drag reduction. This project aims to understand the turbulent transport mechanism for fluid flow over spatially uniform and irregular rough walls. It will provide accurate modelling of irregular roughness and high fidelity simulations. The intended outcomes are physical understanding of the turbulence phenomenon in these flows, and novel flow control of irregular rough wall flows leading to significant drag reduction for transport indus ....Impact of spatially uniform and irregular rough surfaces on drag reduction. This project aims to understand the turbulent transport mechanism for fluid flow over spatially uniform and irregular rough walls. It will provide accurate modelling of irregular roughness and high fidelity simulations. The intended outcomes are physical understanding of the turbulence phenomenon in these flows, and novel flow control of irregular rough wall flows leading to significant drag reduction for transport industries in Australia. Benefits are relevant to both engineering applications involving rough walls and to environmental applications enabling better prediction of particulate matter dispersionRead moreRead less
Understanding combustion in gasoline compression ignition conditions. This project aims to provide the first fundamental-level understanding of the processes of ignition, combustion, and pollutant formation relevant to a new, highly efficient combustion mode known as gasoline compression ignition (GCI). This project aims to provide information using a unique combination of direct numerical simulations, advanced transported probability density function modelling and a suite of laser measurements ....Understanding combustion in gasoline compression ignition conditions. This project aims to provide the first fundamental-level understanding of the processes of ignition, combustion, and pollutant formation relevant to a new, highly efficient combustion mode known as gasoline compression ignition (GCI). This project aims to provide information using a unique combination of direct numerical simulations, advanced transported probability density function modelling and a suite of laser measurements in a high-pressure combustion chamber. GCI engines have significant potential to improve fuel economy and reduce emissions harmful to health and the environment. The outcomes from this project will lead to accelerated development of the GCI engine, and more optimal GCI solutions to be found.Read moreRead less
Application of exact coherent structures to transition and turbulence. This project aims to understand coherent structures and devise methods to prevent bypass transition to turbulence and reduce turbulent wall drag. Coherent structures in turbulence may be identified with nonlinear solutions of the exact equations of motion. Such "exact" coherent structures have their Reynolds number dependence described explicitly and apply for moderate to very large Reynolds numbers, well above the range of f ....Application of exact coherent structures to transition and turbulence. This project aims to understand coherent structures and devise methods to prevent bypass transition to turbulence and reduce turbulent wall drag. Coherent structures in turbulence may be identified with nonlinear solutions of the exact equations of motion. Such "exact" coherent structures have their Reynolds number dependence described explicitly and apply for moderate to very large Reynolds numbers, well above the range of full Navier–Stokes calculations. Understanding the fundamentals of turbulence is expected to lead to more efficient and cheaper air transportation, and better tools for climate prediction and short-term weather forecasting.Read moreRead less