Results 1 to 10 of about 1,164 (149)
On an Exact Step Length in Gradient-Based Aerodynamic Shape Optimization—Part II: Viscous Flows
Fluids, 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
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Shock Wave Capturing Numerically in Two Dimensional Supersonic Wind Tunnel for Different Configuration [PDF]
Engineering 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
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Acta Polytechnica, 2021 This paper deals with the numerical simulation of 2D transonic flow through the SE1050 turbine blade cascade at various flow conditions. The first one concerns the design operation with a zero incidence angle involved in the ERCOFTAC Database CFD-QNET ...
Petr Louda +2 more
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Transonic magnetohydrodynamic flows [PDF]
Journal 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.
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Importance of Air Humidity and Contaminations in the Internal and External Transonic Flows
Energies, 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
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Aerodynamic Load Reduction on a Supercritical Airfoil Using Tilted Microjets
International Journal of Aerospace Engineering, 2023 Microjets arranged on the wing surfaces of civil transport aircraft have been shown to have great potential in suppressing high-frequency gust loads.
Cheng Xue +3 more
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Vietnam Journal of Mechanics, 2011 For compressible flows, the transonic state depends on the geometry, Mach number and the incidence. This effect can produce shock wave. Some studies showed that the interaction between shock wave and boundary layer concerns separation phenomenon. Studies
Hoang Thi Bich Ngoc, Nguyen Manh Hung
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Shock and Vibration, 2022 This paper presents a modified fifth-order WENO-HLLC Riemann solver for the transonic compressible viscous flows around the helicopter rotor in hover. The HLLC approximate Riemann solver is proposed to discrete the convection term involving grid velocity
Li Xu, Fengfeng Zhao, Jingjing Cai
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A Unified Asymptotic Theory of Supersonic, Transonic, and Hypersonic Far Fields
Axioms, 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
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Vietnam Journal of Mechanics, 2007 Transonic flows are complex problems. At certain Mach numbers, in gas flows there are local transitions from the subsonic into the supersonic and reciprocally, especially the discontinuity throughout shock waves.
Hoang Thi Bich Ngoc
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