Journal ArticleDOI
Vortex shedding in flow past an inclined flat plate at high incidencea)
TLDR
In this article, the authors investigated the properties of asymmetric wake patterns behind a flat plate inclined at angles of attack 20°, 25°, and 30° by direct numerical simulations.Abstract:
The properties of asymmetric wake patterns behind a flat plate inclined at angles of attack 20°, 25°, and 30° are investigated. The Reynolds number based on the inflow velocity and the plate width is 1000. Both two-dimensional and three-dimensional calculations are performed by direct numerical simulations. Compared to the three-dimensional simulations, the two-dimensional calculations predict a significantly lower pressure on the rear surface of the plate, which consequently leads to very high drag and lift forces on the plate. The asymmetric mean wake flow, turbulence properties, and coherent patterns in the three-dimensional simulations are analysed by time- and phase-averaged techniques. Unlike the symmetric wake flow, the vortices shed from the leading and trailing edges of an inclined plate possess unequal strength with the trailing edge vortex having higher strength. It is observed that the present three-dimensional simulations predict results which compare well with the experimental data. In addit...read more
Citations
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Journal ArticleDOI
Assessment of spanwise domain size effect on the transitional flow past an airfoil
Wei Zhang,Ravi Samtaney +1 more
TL;DR: In this paper, the authors investigate the incompressible flow past an isolated NACA0012 airfoil at the angle of attack of 5 degrees and Reynolds number 5 × 10 4.
Journal ArticleDOI
Numerical study on viscoelastic fluid flow past a rigid body
TL;DR: In this paper, a numerical method is proposed that discretizes the non-linear viscoelastic system on a uniform Cartesian grid, with a penalization method to model the presence of the cylinder.
Journal ArticleDOI
Direct numerical simulations on the flow past an inclined circular disk
TL;DR: In this paper, the authors investigated the three-dimensional flow past an inclined circular disk using direct numerical simulations, and compared the results at different incidence angles of the disk at different timescales.
Journal ArticleDOI
Three-dimensionality of elliptical cylinder wakes at low angles of incidence
TL;DR: In this article, the wake of an elliptical cylinder at low incident angles is investigated for different aspect ratio cylinders using stability analysis and direct simulations, and the two-and three-dimensional transitions are mapped for cylinders of aspect ratios between 1 and 4 using Floquet stability analysis.
Journal ArticleDOI
Three-dimensional wake transition behind an inclined flat platea)
TL;DR: In this paper, the transition phenomena in the wake of a flat plate at 25° angle of attack are investigated by means of three-dimensional computer simulations, and the Strouhal number versus Reynolds number relationship was determined for Re from 275 to 800.
References
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