Turbulent wall-bounded flow in adverse pressure gradient environments. This research will create additional research capacity in turbulence control and drag reduction. It will have direct benefits to the Australian economy via the transport industry by reducing the adverse impact of the carbon tax and rising fuel prices on long-haul air, water and road transport, on which Australia is disproportionately reliant.
Advancing unsteady bluff body aerodynamics: applications to elite cycling. Delivering a better understanding of unsteady wakes has real potential to further our future capabilities of reducing bluff body parasitic drag. The national benefit derived from this project is the advancement of knowledge of a complex fluid mechanics problem, with secondary benefits arising from the specific and practical application to sports aerodynamics. By better understanding the wake structure and its interaction ....Advancing unsteady bluff body aerodynamics: applications to elite cycling. Delivering a better understanding of unsteady wakes has real potential to further our future capabilities of reducing bluff body parasitic drag. The national benefit derived from this project is the advancement of knowledge of a complex fluid mechanics problem, with secondary benefits arising from the specific and practical application to sports aerodynamics. By better understanding the wake structure and its interaction with a locally oscillating bluff body this knowledge can feed into the field of active flow control in the transport sector. The potential for emissions mitigation by lowering aerodynamic losses in the ground transportation section through active aerodynamic control is significant.Read moreRead less
Environmentally sustainable shipping through improved understanding and management of wall-bounded turbulence. The thin region of turbulent flow that is pulled along by a ship's hull as it moves through the water accounts for up to 90 per cent of the overall resistance and a large amount of the fuel burnt. This project aims to control or tame recurrent flow patterns within these turbulent regions to reduce resistance, overall fuel cost and emissions from shipping.
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
Advancing unsteady bluff body aerodynamics: applications to elite cycling. Delivering a better understanding of unsteady wakes has real potential to further our future capabilities of reducing bluff body parasitic drag. The national benefit derived from this project is the advancement of knowledge of a complex fluid mechanics problem, with secondary benefits arising from the specific and practical application to sports aerodynamics. By better understanding the wake structure and its interaction ....Advancing unsteady bluff body aerodynamics: applications to elite cycling. Delivering a better understanding of unsteady wakes has real potential to further our future capabilities of reducing bluff body parasitic drag. The national benefit derived from this project is the advancement of knowledge of a complex fluid mechanics problem, with secondary benefits arising from the specific and practical application to sports aerodynamics. By better understanding the wake structure and its interaction with a locally oscillating bluff body this knowledge can feed into the field of active flow control in the transport sector. The potential for emissions mitigation by lowering aerodynamic losses in the ground transportation section through active aerodynamic control is significant.Read moreRead less
A novel surface preparation for manipulation of turbulent boundary layers. Australia's geographic isolation means that we are unusually dependent on long-haul transportation systems for sustaining our economy. This project seeks to examine novel surface coatings to reduce the drag of large transport systems. A successful outcome would ultimately reduce Australia's fuel costs and environmental footprint.
Elucidating the inertial force mechanisms of turbulence. The turbulent flow of fluids (for example, air, water) near a solid surface is of enormous technological importance. The proposed research will advance engineering prediction and control capabilities by revealing how the unsteady eddying motions produce the apparent inertial force that distinguishes turbulent flows from their laminar counterparts.
Taming turbulence with long-chain polymers. Aerodynamics, hydrodynamics and the efficiency of pumping oil, gas and water through long pipelines can be dramatically improved by reducing the high friction loss caused by turbulent flow. This project will develop the world's largest laboratory turbulent pipe flow facility to test efficiency gains and limitations of polymer addition.
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