Results 271 to 280 of about 116,720 (315)

Entropy losses in transonic shock–boundary-layer interaction

Physics of Fluids
Wall-resolved large-eddy simulations are conducted to examine a Mach 1.1 normal shock–turbulent boundary layer interaction (SBLI) under systematically varied wall-to-recovery temperature ratios. A second-law thermodynamic analysis is employed to characterize the underlying mechanisms of entropy generation.
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Plasma Control of a Turbulent Shock Boundary-Layer Interaction

AIAA Journal, 2013
The Navier–Stokes equations were solved using a high-fidelity time-implicit numerical scheme and an implicit large-eddy simulation approach to investigate plasma-based flow control for supersonic flow over a compression ramp. The configuration included a flat-plate region to develop an equilibrium turbulent boundary layer at Mach 2.25, which was ...
Nicholas J. Bisek, Donald P. Rizzetta, Jonathan Poggie   +2 more
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Experimental Measurements of Shock/Boundary-Layer Interaction on a Supercritical Airfoil

Journal of Aircraft, 1979
A recent investigation of the shock/boundary layer interaction region of a state-of-the-art supercritical airfoil in the Lockheed-Georgia Compressible Flow Wind Tunnel is summarized. The test apparatus is a half airfoil model, mounted on the floor of the tunnel, which provides a boundary layer with proper upstream history from stagnation point through ...
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Analysis of Weak Glancing Shock/Boundary-Layer Interactions

Journal of Aircraft, 1980
A flow model is developed for the "weak" glancing shock interaction from experimental observations. Integral continuity, cross-stream momentum, and stream-wise momentum equations are written for a control volume taken about the shock interaction region. Analytic functions are used to represent the 3-D velocity profiles.
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Microramps Upstream of an Oblique-Shock/Boundary-Layer Interaction

AIAA Journal, 2010
To examine the potential of micro vortex generators for shock/boundary-layer interaction control, a detailed experimental and computational study in a supersonic boundary layer at M = 3.0 was undertaken. The experiments employed a flat-plate boundary layer with an impinging oblique shock with downstream total-pressure measurements.
S. Lee, M. K. Goettke, E. Loth, J. Tinapple, John Benek   +4 more
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Passive Control of Transonic Shock/Boundary Layer Interaction

1989
Experimental investigations are presented, aiming at the improvement of transonic wing performance through passive control of shock/boundary layer interaction (SBLI) by boundary layer ventilation in the shock region.
P. Thiede, P. Krogmann
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A new numerical study of the shock/boundary-layer interaction

International Journal for Numerical Methods in Fluids, 2000
Summary: We describe a numerical study of flat plane shock/boundary-layer interaction by using a weighted high-resolution total variation diminishing scheme. The key difference of this study from former studies is that new secondary vortices in the separated region have been found for the first time, with increasing the impinging shock angle or the ...
Shen, Yiqing, Wang, Ruquan, Liao, Hongzhi   +2 more
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Large-Eddy Simulation of Shock/Boundary-Layer Interaction

AIAA Journal, 2012
This work considers numerical simulations of supersonic flows when shock/turbulent boundary-layer interaction occurs. Such flows reveal the existence of complex mechanisms, which need to be carefully investigated for efficient design of propulsion systems. In this study, large-eddy simulation is used to investigate unsteady mechanisms.
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Review of the physics of swept-shock/boundary layer interactions

Progress in Aerospace Sciences, 1996
Abstract The interaction of a swept-shock wave with a boundary layer appears in those regions of a high-speed vehicle in which two surfaces intersect. Simple configurations have been studied which resemble these regions. The simplest and most studied configurations are: the fin/plate, the wedge/wedge (or axial corner), the wedge/plate (or intake-type)
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Weighted Compact Schemes for Shock / Boundary Layer Interaction

2009
In this paper, we introduce a new type of weighted, finite-difference schemes. The basic idea comes from the compact schemes discussed in [le le92] paper and the weighted compact schemes proposed in [jiang01] paper. The purpose of this new scheme is to achieve spectral-like resolution and high order of accuracy in smooth regions and to keep the ability
Peng Xie, Maria Oliveira, Jianzhong Su, Chaoqun Liu   +3 more
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