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- W2322873762 abstract "Hypersonic vehicles experience different flow regimes during flight due to changes in atmospheric density. Hybrid Computational Fluid Dynamics (CFD) and direct simulation Monte Carlo (DSMC) methods are being developed to simulate the flow in different hypersonic regimes. These methods use a breakdown parameter to determine regions of the flow where the CFD physics are no longer valid. The current study investigates the effect of continuum breakdown on surface aerothermodynamic properties, such as pressure, shear stress and heat transfer rate, of a cylinder in a Mach 10 flow of argon gas for several different flow regimes, from the continuum to a rarefied gas. CFD and DSMC solutions are obtained at each flow condition. Total drag predictions are identical for a continuum flow while differing by more than 26% for a rarefied flow. Peak heat transfer rate differences range from less than 1% for a continuum flow to almost 32% for a rarefied flow. Drag depends primarily on continuum breakdown in the wake, while heat transfer rate appears to depend primarily on continuum breakdown in the shock and differences in thermal boundary layer thickness." @default.
- W2322873762 created "2016-06-24" @default.
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- W2322873762 date "2006-01-09" @default.
- W2322873762 modified "2023-09-24" @default.
- W2322873762 title "Effects of Continuum Breakdown on Hypersonic Aerothermodynamics" @default.
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- W2322873762 doi "https://doi.org/10.2514/6.2006-993" @default.
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