Advanced Modeling Methods for Hypersonic Scramjet Evaluation

Ungewitter, Ronald; Ott, James D.; Dash, S. M.

doi:10.2514/6.2006-4578

Cited by 8 publications

(2 citation statements)

References 7 publications

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“…Propulsive flowpaths for scramjet missiles are being evaluated by R.J. Ungewitter and J.D. Ott evaluate using a high-fidelity CFD methodology to determine optimum performance and to extend ground test data to flight environment [7] . Genetic optimization techniques are used to establish optimal injector spacing/orientation, and nozzle shapes that maximize thrust and thus expand the role of CFD from an analysis tool to a design methodology.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of the Aerodynamics and Aerothermal Heating for a Hypersonic Vehicle

Liu

Qiang

2012

AMR

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A hypersonic forebody based on waverider and liftbody concept was presented. The configuration of a new hypersonic vehicle was designed by taking the configuration of X43A. Numerical simulation was conducted on the two-dimensional and three-dimensional models of the vehicle using CFD software of Gambit and Fluent. The effects of Mach number and attack angle on the aerodynamics and heat transfer were considered. The results of simulation investigation showed that: High compressed air was constrained beneath the pre-compressed surface of the forebody. The computational data on central cross section of the three-dimensional model for the vehicle was similar to that of the two-dimensional model. But great pressure gradient existed between the pre-compressed surface and side surface of the forebody which would lead to severe air leakage and pressure loss. The increasing of attack angle and Mach number enforced the stagnation of shock wave on the side walls of the engine. The thermal environment of the vehicle was deteriorated rapidly with increasing Mach number. But the viscous heating was overrated which lead to unbelievable high temperature. The software Fluent was more suitable to predict the aerodynamics than the heat transfer for hypersonic flow.

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Section: Introductionmentioning

confidence: 99%

Numerical Simulation of the Aerodynamics and Aerothermal Heating for a Hypersonic Vehicle

Liu

Qiang

2012

AMR

View full text Add to dashboard Cite

show abstract

“…Ott evaluate using a high-fidelity CFD methodology to determine optimum performance and to extend ground test data to flight environment [7]. Genetic optimization techniques are used to establish optimal injector spacing/orientation, and nozzle shapes that maximize thrust and thus expand the role of CFD from an analysis tool to a design methodology.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Heat Transfer Characteristics for Two Metallic TPS Structures

Liu

Qiang

2010

AMR

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Two structures of metallic thermal protection system(TPS) for hypersonic vehicle were presented. One model was a multi-layer construction and the other has cavities in the metallic layer. Numerical simulations were conducted on the three-dimensional TPS models using CFD software of Gambit and Fluent. Two heating temperatures of 1073K and 773K with constant temperature and isothermal boundary conditions were considered. Heat transfer was treated as single conductivity and thermal radiation effect was not involved. The results of simulation investigation showed that: The metallic layer had poor capability to restrict the heat conductivity. Heat was easier to transfer across the bracket into the internal part of the TPS. The ability of cavities in metallic layer to resist heat conductivity was limited. The temperature-heating time variation pattern was similar for different external heating temperature. Internal cooling was important for the TPS. The thermal radiation effect on the TPS would be focused in further research.

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Evaluation of the Pressure-Corrected Osculating Axisymmetric Flows Method for Designing Hypersonic Wavecatcher Intakes with Shape Transition

Musa,

Huang,

2024

J. Aerosp. Eng.

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Advanced Modeling Methods for Hypersonic Scramjet Evaluation

Cited by 8 publications

References 7 publications

Numerical Simulation of the Aerodynamics and Aerothermal Heating for a Hypersonic Vehicle

Numerical Simulation of the Aerodynamics and Aerothermal Heating for a Hypersonic Vehicle

Numerical Simulation of Heat Transfer Characteristics for Two Metallic TPS Structures

Evaluation of the Pressure-Corrected Osculating Axisymmetric Flows Method for Designing Hypersonic Wavecatcher Intakes with Shape Transition

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