Results 91 to 100 of about 5,113,406 (258)

Incipient Separation for Hypersonic Shock Wave/Turbulent Boundary Layer Interaction

气体物理
Shock/turbulent boundary layer interaction (STBLI) is a prevalent and complex flow phenomenon in the aerospace sector that significantly impacts the aerodynamic performance of vehicles.
Haodong WANG, Bowen ZHU, Lin BAO
doaj   +1 more source

Laminar and Turbulent Aero Heating Predictions over Blunt Body in Hypersonic Flow [PDF]

فصلنامه علوم و فناوری فضایی, 2014
In the present work, an engineering method is developed to predict laminar and turbulent heating-rate solutions for blunt reentry spacecraft at hypersonic conditions.
S. A. Hosseini, S. Noori
doaj  

Transition mechanisms in hypersonic wind-tunnel nozzles: a methodological approach using global linear stability analysis

Flow
Base-flow computations and stability analyses are performed for a hypersonic wind tunnel nozzle at a Mach number of 6. Isothermal and adiabatic wall boundary conditions are investigated, and moderate stagnation conditions are used to provide ...
Hugo Lemarquand, Mathieu Lugrin, Cédric Content, Clément Caillaud, Sébastien Esquieu, Denis Sipp   +5 more
doaj   +1 more source

Aerothermodynamic Parametric Analysis of Hypersonic Re-entry Capsules with Passive Decelerators [PDF]

Journal of Applied Fluid Mechanics
This study investigates the aerothermodynamic optimization of the Orion Crew Exploration Vehicle (CEV) re-entry capsule through Computational Fluid Dynamics (CFD) to enhance drag reduction and stability while evaluating thermal trade-offs, decreasing the
M. Al-Damook, F. Shaban, M. Al Qubeissi
doaj   +1 more source

Hypersonic turbulent wall boundary layer computations [PDF]

The Baldwin-Lomax algebraic turbulence model was modified for hypersonic flow conditions. Two coefficients in the outer layer eddy viscosity model were determined as functions of Mach number and temperature ratio.
Harloff, G. J., Kim, S. C.
core   +1 more source

Local correlation-based transition model for aerodynamic flows in wide speed range

Engineering Applications of Computational Fluid Mechanics
A local correlation-based transition model is developed for aerodynamic flows in a wide speed range. New localized methods for the momentum-thickness Reynolds number are introduced for constructing local transition indicators. New transition correlations
Hexia Huang, Zaijie Liu, Huijun Tan
doaj   +1 more source

Generalized Entropy Generation Expressions in Gases

Entropy, 2019
In this study, we generalize our previous methods for obtaining entropy generation in gases without the need to carry through a specific expansion method, such as the Chapman–Enskog method.
Michael H. Peters
doaj   +1 more source

A review of reaction rates and thermodynamic and transport properties for the 11-species air model for chemical and thermal nonequilibrium calculations to 30000 K [PDF]

Reaction rate coefficients and thermodynamic and transport properties are provided for the 11-species air model which can be used for analyzing flows in chemical and thermal nonequilibrium. Such flows will likely occur around currently planned and future
Gupta, Roop N., Thompson, Richard A., Yos, Jerrold M.   +2 more
core   +1 more source

Effect of wall temperature on separation bubble size in laminar hypersonic shock/boundary layer interaction flows

Advances in Mechanical Engineering, 2019
At hypersonic speeds, the external wall temperatures of an aerospace vehicle vary significantly. As a result, there is a considerable heat transfer variation between the boundary layer and the wall of the hypersonic vehicle.
Amjad A Pasha, Khalid A Juhany
doaj   +1 more source

The 3-D Navier-Stokes analysis of crossing, glancing shocks/turbulent boundary layer interactions [PDF]

Three dimensional viscous flow analysis is performed for a configuration where two crossing and glancing shocks interact with a turbulent boundary layer.
Reddy, D. R.
core   +1 more source