Results 21 to 30 of about 789,848 (154)

A Unified Asymptotic Theory of Supersonic, Transonic, and Hypersonic Far Fields

open access: yesAxioms, 2022
The problems of steady, inviscid, isentropic, irrotational supersonic plane flow passing a body with a small thickness ratio was solved by the linearized theory, which is a first approximation at and near the surface but fails at far fields from the body.
Lung-Jieh Yang, Chao-Kang Feng
doaj   +1 more source

An Application of Image Analysis to Hypersonic Flows

open access: yesEPJ Web of Conferences, 2013
Image-based measurement methods are becoming increasingly common in fluid dynamics and are seen in applications ranging from low subsonic to hypersonic flows.
Belan M., Mirzaei M.
doaj   +1 more source

Aerodisk Effect on Hypersonic Boundary Layer Transition and Heat Transfer of HIFiRE-5 Vehicle

open access: yesAerospace, 2022
The substantial aerodynamic drag and severe aerothermal loads, which are closely related to boundary layer transition, challenge the design of hypersonic vehicles and could be relieved by active methods aimed at drag and heat flux reduction, such as ...
Yatian Zhao, Zhiyuan Shao, Hongkang Liu
doaj   +1 more source

Investigation of turbulence models with compressibility corrections for hypersonic boundary flows

open access: yesAdvances in Mechanical Engineering, 2015
The applications of pressure work, pressure-dilatation, and dilatation-dissipation (Sarkar, Zeman, and Wilcox) models to hypersonic boundary flows are investigated.
Han Tang, Zhenxun Gao
doaj   +1 more source

Progress in RANS-based local correlation transition models for hypersonic flows: A review [PDF]

open access: yesInternational Journal of Fluid Engineering
Precise estimation of the location and magnitude of boundary layer transition is essential for the exact computation of aero-thermodynamics and the performance of hypersonic vehicles. Compared with resource-intensive methods such as large eddy simulation,
DiviaHarshaVardini R C, Ikhyun Kim
doaj   +1 more source

Data-driven nonlinear constitutive relations for rarefied flow computations

open access: yesAdvances in Aerodynamics, 2021
To overcome the defects of traditional rarefied numerical methods such as the Direct Simulation Monte Carlo (DSMC) method and unified Boltzmann equation schemes and extend the covering range of macroscopic equations in high Knudsen number flows, data ...
Wenwen Zhao   +3 more
doaj   +1 more source

An open source, parallel DSMC code for rarefied gas flows in arbitrary geometries [PDF]

open access: yes, 2010
This paper presents the results of validation of an open source Direct Simulation Monte Carlo (DSMC) code for general application to rarefied gas flows. The new DSMC code, called dsmcFoam, has been written within the framework of the open source C++ CFD ...
Scanlon, T.J.   +4 more
core   +4 more sources

Aerodynamics simulations of three-dimensional inviscid flow using curvilinear discontinuous Galerkin method on unstructured meshes

open access: yesFrontiers in Physics, 2022
Over the last decades, the discontinuous Galerkin (DG) method has demonstrated its excellence in accurate, higher-order numerical simulations for a wide range of applications in aerodynamics simulations.
Shucheng Huang   +4 more
doaj   +1 more source

Experimental Investigation of Brazilian 14-X B Hypersonic Scramjet Aerospace Vehicle

open access: yesInternational Journal of Aerospace Engineering, 2017
The Brazilian hypersonic scramjet aerospace vehicle 14-X B is a technological demonstrator of a hypersonic airbreathing propulsion system based on the supersonic combustion (scramjet) to be tested in flight into the Earth’s atmosphere at an altitude of ...
João Felipe de Araujo Martos   +5 more
doaj   +1 more source

Chemically Gradient Ordered Nanodomains Enable Large Tensile Ductility in Gigapascal Lightweight Refractory High‐Entropy Alloys

open access: yesAdvanced Science, EarlyView.
A high‐strength lightweight refractory high‐entropy alloy achieves extraordinary ductility owing to the introduction of coherent chemically gradient ordered nanodomains (CGONs). The CGONs not only serve as effective barriers to dislocation motion (strengthening) but also significantly promote dislocation nucleation and multiplication (ductilizing) upon
Wei Zhang   +3 more
wiley   +1 more source

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