Results 1 to 10 of about 48,923 (362)

Numerical computation of transonic flow governed by the full-potential equation [PDF]

open access: green, 1983
Numerical solution techniques for solving transonic flow fields governed by the full potential equation are discussed. In a general sense relaxation schemes suitable for the numerical solution of elliptic partial differential equations are presented and ...
Terry L. Holst
openalex   +2 more sources

Multidimensional transonic shock waves and free boundary problems

open access: yesBulletin of Mathematical Sciences, 2022
We are concerned with free boundary problems arising from the analysis of multidimensional transonic shock waves for the Euler equations in compressible fluid dynamics.
Gui-Qiang G. Chen, Mikhail Feldman
doaj   +1 more source

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

Parametric Research and Aerodynamic Characteristic of a Two-Stage Transonic Compressor for a Turbine Based Combined Cycle Engine

open access: yesAerospace, 2022
This paper researches the parametric optimization of a two-stage transonic compressor having a large air bypass at partial rotating speed according to flow analysis for a turbine-based combined cycle engine (TBCC).
Hengtao Shi
doaj   +1 more source

Shock Wave Capturing Numerically in Two Dimensional Supersonic Wind Tunnel for Different Configuration [PDF]

open access: yesEngineering and Technology Journal, 2012
Numerical solutions of two dimensional Euler equations are obtained for transonic and supersonic flows. The shock capturing method is employed to solve compressible Euler equations by using MacCormack's time marching method that an explicit finite ...
Ahmed Fouad Mahdi
doaj   +1 more source

Transonic Buffet Active Control with Local Smart Skin

open access: yesActuators, 2022
Transonic flight has high economic benefits, but the appearance of transonic buffet limits the flight envelope. The shock control bump currently used for transonic buffet suppression tends to degrade the aerodynamic performance of the non-buffeting state.
Kai Ren   +3 more
doaj   +1 more source

On an Exact Step Length in Gradient-Based Aerodynamic Shape Optimization—Part II: Viscous Flows

open access: yesFluids, 2021
This study presents an extension of a previous study (On an Exact Step Length in Gradient-Based Aerodynamic Shape Optimization) to viscous transonic flows. In this work, we showed that the same procedure to derive an explicit expression for an exact step
Farzad Mohebbi   +2 more
doaj   +1 more source

Importance of Air Humidity and Contaminations in the Internal and External Transonic Flows

open access: yesEnergies, 2020
The paper presents mathematical modelling of steam condensation in the atmospheric air transonic flows. A single-fluid model was employed. The model was validated against the in-house experimental studies of internal flow in nozzles and against benchmark
P. Wiśniewski, S. Dykas, S. Yamamoto
doaj   +1 more source

Transonic magnetohydrodynamic flows [PDF]

open access: yesJournal of Plasma Physics, 1997
Stationary flows of an ideal plasma with translational symmetry along the (vertical) z axis are considered, and it is demonstrated how they can be described in the intrinsic (natural) coordinates (ξ, η, &), where ξ is a label of flux and stream surfaces, η is the total pressure and ϑ is the angle between the horizontal magnetic (and ...
Lifschitz, A., Goedbloed, J.P.
openaire   +3 more sources

Characteristic prediction method of transonic axial flow turbine

open access: yesZhongguo Jianchuan Yanjiu, 2021
ObjectivesRegarding transonic flow occurring at the throat of the stator blades of axial flow turbines at high subsonic and transonic speeds, it is will need a long period of time to have 3D reseach and to obtain the characteristic parameters. Therefore,
Yufeng DU, Jie GAO, Qun ZHENG, Guojun MA
doaj   +1 more source

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