Results 11 to 20 of about 454,024 (311)

Numerical study of the effect of sidewalls on shock train behaviour

open access: yesFlow, 2023
Strongly coupled sequences of shock waves, known as shock trains, are present in high-speed propulsion systems, where the presence of sidewalls substantially modifies the boundary layer thickness, skin friction and streamwise pressure distribution.
Alexander Gillespie, Neil D. Sandham
doaj   +1 more source

Study of separation phenomenon in transonic flows produced by interaction between shock wave and boundary layer

open access: yesVietnam 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
doaj   +1 more source

Viscous effects on the position of cavitation separation from smooth bodies [PDF]

open access: yes, 1975
Flow visualization by the schlieren technique in the neighbourhood of a fully developed cavity on two axisymmetric headforms has shown the existence of laminar boundary-layer separation upstream of cavitation separation, and the distance between the two ...
Arakeri, Vijay H.
core   +1 more source

Active Boundary Layer Control on a Highly Loaded Turbine Exit Case Profile

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2018
A highly loaded turbine exit guide vane with active boundary layer control was investigated experimentally in the High Speed Cascade Wind Tunnel at the University of the German Federal Armed Forces, Munich.
Julia Kurz   +2 more
doaj   +1 more source

Direct numerical simulations of transition in a compressor cascade: The influence of free-stream turbulence [PDF]

open access: yes, 2010
Copyright © Cambridge University Press 2010.The flow through a compressor passage without and with incoming free-stream grid turbulence is simulated.
Durbin, PA   +3 more
core   +2 more sources

Implementation of a correction factor for the Pohlhausen laminar boundary layer applied on the CEVA curved wall jet model [PDF]

open access: yesINCAS Bulletin, 2013
Curved wall jets have many technical applications, ranging from aeronautical circulation controlled wings to micro-fluidics and cryogenics. This paper addresses the issue of correctly estimating the boundary layer separation for laminar curved wall jets.
Valeriu DRAGAN
doaj   +1 more source

Effect of wall temperature on separation bubble size in laminar hypersonic shock/boundary layer interaction flows

open access: yesAdvances in Mechanical Engineering, 2019
At hypersonic speeds, the external wall temperatures of an aerospace vehicle vary significantly. As a result, there is a considerable heat transfer variation between the boundary layer and the wall of the hypersonic vehicle.
Amjad A Pasha, Khalid A Juhany
doaj   +1 more source

The onset of instability in unsteady boundary-layer separation [PDF]

open access: yes, 1996
The process of unsteady two-dimensional boundary-layer separation at high Reynolds number is considered. Solutions of the unsteady non-interactive boundary-layer equations are known to develop a generic separation singularity in regions where the ...
Cassel, KW, Smith, FT, Walker, JDA
core   +1 more source

Numerical study on the standing morphology of an oblique detonation wave under the influence of an incoming boundary layer

open access: yesOpen Physics, 2015
The influence of an incoming boundary layer to the standing morphology of an oblique detonation wave (ODW) induced by a compression ramp is numerically studied in this paper.
Zhou Jin, Liu Yu, Lin Zhi-yong
doaj   +1 more source

Controlling boundary layer separation in stretching sheet flow

open access: yesAlexandria Engineering Journal, 2018
The effects of non-uniform nanoparticle concentration within the boundary layer flow due to stretching surface are analyzed by employing a non-homogeneous model of nanofluid which passively controls the concentration of nanoparticles at the surface.
Ahmer Mehmood, Muhammad Usman
doaj   +1 more source

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