Results 21 to 30 of about 47,524 (305)

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

A face-based immersed boundary method for compressible flows using a uniform interpolation stencil

open access: yesFrontiers in Mechanical Engineering, 2022
In this study, an immersed boundary method developed for compressible viscous flows (Ramakrishnan, R., Girdhar, A., & Ghosh, S. (2016). Immersed Boundary Methods for Compressible Laminar Flows) is modified to improve their stability and robustness ...
M. L. N. V. Kasturi Rangan   +1 more
doaj   +1 more source

Simulation of a supersonic nozzle of a massive helium jet injector

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2023
The paper describes the design and operating principle of a valve designed for testing the prototypes of key elements of a massive gas injection system: a seat and a supersonic nozzle.
Timokhin Vladimir   +4 more
doaj   +1 more source

On upstream influence in supersonic flows [PDF]

open access: yes, 2005
The general problem of propagation of three-dimensional disturbances in viscous supersonic flows is considered in the framework of characteristic analysis.
Krechetnikov, R., Lipatov, I. I.
core   +1 more source

Assessment of the IDDES method acting as wall-modeled LES in the simulation of spatially developing supersonic flat plate boundary layers

open access: yesEngineering Applications of Computational Fluid Mechanics, 2018
The widely used improved delayed detached eddy simulation (IDDES) method is supposed to accurately predict the mean skin friction when it acts as wall-modeled large eddy simulation (WMLES), as claimed by the original authors.
Yiyu Han   +4 more
doaj   +1 more source

Entropy Minimization Design Approach of Supersonic Internal Passages

open access: yesEntropy, 2015
Fluid machinery operating in the supersonic regime unveil avenues towards more compact technology. However, internal supersonic flows are associated with high aerodynamic and thermal penalties, which usually prevent their practical implementation. Indeed,
Jorge Sousa, Guillermo Paniagua
doaj   +1 more source

Supersonic flow control [PDF]

open access: yesShock Waves, 2015
Shock wave-induced boundary layer interactions are unavoidable in high-speed flows. The strong adverse pressure gradient imposed by the shock on the incoming undisturbed boundary layer may result in flow separation that is associated with low-frequency oscillations of the separation shock.
Verma, S., Hadjadj, Abdellah
openaire   +3 more sources

Effects of Inflow Mach Number and Step Height on Supersonic Flows over a Backward-Facing Step

open access: yesAdvances in Mechanical Engineering, 2013
The backward-facing step is practically implicated in many devices, encountering the massive separation flows. In the present study, simulations of supersonic flow over a backward-facing step have been carried out employing both RANS and LES.
Haixu Liu   +4 more
doaj   +1 more source

Numerical Solution of Inviscid Compressible Steady Flows around the RAE 2822 Airfoil

open access: yesEPJ Web of Conferences, 2015
The article presents results of a numerical solution of subsonic, transonic and supersonic flows described by the system of Euler equations in 2D compressible flows around the RAE 2822 airfoil.
Kryštůfek P., Kozel K.
doaj   +1 more source

Supersonic turbulence in 3D isothermal flow collision

open access: yes, 2014
Colliding supersonic bulk flows shape observable properties and internal physics of various astrophysical objects, like O-star winds, molecular clouds, galactic sheets, binaries, or gamma-ray bursts.
Favre, Jean M.   +2 more
core   +1 more source

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