Results 11 to 20 of about 22,527 (307)

A Modified Fifth-Order WENO-HLLC Riemann Solver for Transonic Viscous Flows around Helicopter Rotor in Hover

open access: yesShock 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
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

Global Solutions of Viscous Transonic Flows in Kerr Geometry I: Weak Viscosity Limit [PDF]

open access: yes, 1996
We present fully general relativistic equations governing viscous transonic flows in vertical equilibrium in Kerr geometry. We find the complete set of global solutions (both for Optically thick and optically thin flows) in the weak viscosity limit.
Chakrabarti, Sandip K.
core   +2 more sources

Reduced-order modeling for unsteady transonic flows around an airfoil [PDF]

open access: yes, 2008
High-transonic unsteady flows around an airfoil at zero angle of incidence and moderate Reynolds numbers are characterized by an unsteadiness induced by the von Kármán instability and buffet phenomenon interaction.
Bourguet, Rémi   +2 more
core   +3 more sources

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

Numerical experiment with upstream boundary conditions

open access: yesEPJ Web of Conferences, 2012
The work deals with a numerical solution of subsonic and transonic flows described by the system of Euler equations in 2D and 3D flows in a channel. Authors used Lax-Wendroff and the multistage Runge-Kutta scheme to numerically solve the flows in a 2D G AMM
Huml Jaroslav, Kozel Karel
doaj   +1 more source

Experimental results and numerical simulations for transonic flow over the ONERA M4R model [PDF]

open access: yesINCAS Bulletin, 2013
This paper presents a comparison between experimental results of transonic flow over the ONERA M4R calibration model obtained in the INCAS Trisonic wind tunnel and the numerical results.
Marius Gabriel COJOCARU   +5 more
doaj   +1 more source

Calculation of transonic flows around profiles with blunt and angled leading edges

open access: yesVietnam Journal of Mechanics, 2016
Transonic flow is a mixed flow of subsonic and supersonic regions. Because of this mixture, the solution of transonic flow problems is obtained only when solving the differential equations of motion with special treatments for the transition from ...
Hoang Thi Bich Ngoc, Nguyen Manh Hung
doaj   +1 more source

Loss Analysis of a Transonic Rotor with a Differential Approach to Entropy Generation

open access: yesMachines, 2023
The loss mechanism of transonic axial compressors is a long-standing problem that involves almost all types of entropy generation in fluid flows, such as skin friction, shock waves, shear flows, corner separation, and tip vortices.
Jingyuan Ma, Feng Lin
doaj   +1 more source

Numerical Solution of Compressible Steady Flows around the NACA 0012 Airfoil

open access: yesEPJ Web of Conferences, 2013
The article presents results of a numerical solution of subsonic and transonic flows described by the system of Navier-Stokes equations in 2D laminar compressible flows around the NACA 0012 airfoil.
Kozel K, Kryštůfek P.
doaj   +1 more source

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