Journal ArticleDOI
Navier-Stokes Computations of Vortical Flows Over Low-Aspect-Ratio Wings
TLDR
In this article, an upwind-biased finite-volume algorithm is applied to the low-speed flow over a low aspect ratio delta wing from zero to forty degrees angle of attack.Citations
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Review of research on low-profile vortex generators to control boundary-layer separation
TL;DR: In this article, an in-depth review of boundary-layer flow-separation control by a passive method using low-profile vortex generators is presented, defined as those with a device height between 10% and 50% of the boundary layer thickness.
Journal ArticleDOI
A low-diffusion flux-splitting scheme for Navier-Stokes calculations
TL;DR: In this article, the development of a new flux-splitting approach for perfect-gas reacting-gas Navier-Stokes computations is presented, which is designed to capture a stationary contact discontinuity without excess numerical diffusion while providing a monotone resolution of strong normal shock waves.
Journal ArticleDOI
Aerodynamic design optimization on unstructured grids with a continuous adjoint formulation
TL;DR: In this paper, a continuous adjoint approach for obtaining sensitivity derivatives on unstructured grids is developed and analyzed, and a second-order accurate discretization method is described.
Journal ArticleDOI
Self-sustained shock oscillations on airfoils at transonic speeds
TL;DR: In this article, a review of the physical mechanisms of the periodic shock motion on airfoils at transonic flow conditions are associated with the phenomenon of buffeting, and various modes of shock wave motion for different flow conditions and airfoil configurations are described.
CFL3D User''s Manual (Version 5.0)
TL;DR: This document is the User''s Manual for the CFL3D computer code, a thin-layer Reynolds-averaged Navier-Stokes flow solver for structured multiple-zone grids.
References
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Journal ArticleDOI
Disrupted states of vortex flow and vortex breakdown
J. H. Faler,Sidney Leibovich +1 more
TL;DR: In this article, the axisymmetric and spiral vortex breakdowns to imposed flow transients reported previously are confirmed, and are traced to the shedding of starting and stopping vortices from swirl vanes.
Journal ArticleDOI
Multigrid acceleration of the flux split Euler equations
TL;DR: Results are presented for three-dimensional flows that demonstrate substantially unproved convergence with the multigrid algorithm.
Proceedings ArticleDOI
Visualization and flow surveys of the leading edge vortex structure on delta wing planforms
TL;DR: In this article, a combination of lateral and longitudinal cross sectional views furnishes data on the three-dimensional character of the vortex before, during, and after breakdown, showing that the core flow transforms from a jet-like to a wake-like flow.
Proceedings ArticleDOI
The Basic Aerodynamics Research Tunnel - A facility dedicated to code validation
TL;DR: A description of the NASA Langley Basic Aerodynamics Research Tunnel (BART) is provided; especially the instrumentation and experimental techniques that make the facility ideally suited to code validation experiments.