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Project abstract for group candlerg
Direct Simulations of High-Speed Transitional and Turbulent Flows
During the past several years, the Candler research group has been developing novel numerical methods for the solution of the compressible Navier-Stokes equations. This numerical flux function has very low levels of numerical dissipation and has high (up to 6th) order of accuracy. It has been shown that this method, along with appropriate time integration methods, can be used to study high Mach number flows from transition to turbulence through to the fully turbulent regime. This enables the study of many fundamental flows to learn about how high-speed flows respond to small disturbances and ultimately break down to turbulent flow.
In this novel research, the group uses Itasca to simulate the interaction of acoustic disturbances with a 4:1 elliptical cross-section cone at Mach 8 conditions; this simulation will mimic experiments performed at Princeton University. Secondly, large-scale simulations of Mach 6 turbulent boundary layer flows will be conducted to compare to measurements made in a shock tunnel facility. These simulations will shed light on the transition process in a non-trivial three-dimensional flow and how energy is transported through a high Mach number boundary layer.