Turbulent Inflow Generation for Direct Simulations of Hypersonic Turbulent Boundary Layers and Their Freestream Acoustic Radiation
Direct numerical simulations (DNS) of hypersonic turbulent boundary layers and their freestream acoustic radiation are conducted with a recycling-rescaling (RR) based or a digital-filter (DF) based turbulent inflow generation methodologies. The flow conditions of the simulations falls within the range of nozzle exit conditions of the Purdue Mach 6 Quiet Tunnel. The study provides a first ever comparison between two distinct turbulent inflow generation methodologies at a common hypersonic condition, in terms of both the turbulence statistics within the boundary layer and the acoustic pressure statistics in the free stream. The study shows that simulation results compare well downstream of the adjustment region between the RR- based and the DF-based methodologies.
J. Huang et al., "Turbulent Inflow Generation for Direct Simulations of Hypersonic Turbulent Boundary Layers and Their Freestream Acoustic Radiation," Proceedings of the 46th AIAA Fluid Dynamics Conference (2016, Washington, DC), American Institute of Aeronautics and Astronautics (AIAA), Jun 2016.
46th AIAA Fluid Dynamics Conference (2016: Jun. 13-17, Washington, DC)
Mechanical and Aerospace Engineering
Center for High Performance Computing Research
Keywords and Phrases
Acoustic Emissions; Acoustic Radiators; Acoustic Wave Propagation; Acoustic Wave Transmission; Acoustic Waves; Atmospheric Thermodynamics; Boundary Layer Flow; Boundary Layers; Digital Filters; Fluid Dynamics; Turbulence; Turbulent Flow; Acoustic Pressures; Acoustic Radiation; Direct Simulation; Flow Condition; Inflow-Generation; Nozzle Exits; Turbulence Statistics; Turbulent Boundary Layers; Hypersonic Boundary Layers
International Standard Book Number (ISBN)
Article - Conference proceedings
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