Results 91 to 100 of about 1,669 (212)

Fine details in solar flare ribbons

open access: yesAstronomy & Astrophysics
Context. Flare ribbons serve as chromospheric footprints of energy deposition resulting from particle acceleration during magnetic reconnection. Their fine-scale structure provides a valuable tool for probing the dynamics of the flare reconnection ...
Thoen Faber Jonas   +6 more
doaj   +1 more source

EFFECT OF RIBLETS AND SUCTION ON A FLAT PLATE TURBULENT BOUNDARY LAYER

open access: yes, 2006
This work presents hot-wire measurements in a flat plate turbulent boundarylayer, subjected to the combination of riblets and suction. The suction is applied through a porous strip for a range of suction rates.
Oyewola, M. O.
core   +1 more source

Optimization of Drag Reducing Shark Inspired Blade-Shape Riblet Surfaces in External Flow

open access: yesJournal of Applied Fluid Mechanics, 2020
The main goal of this research is to study the drag reduction capabilities of blade-shape riblet surfaces in external flows. For this purpose, the ability of riblet surfaces for drag reduction of an underwater hydrodynamic model has been investigated ...
M. Monfared, M. A. Alidoostan
doaj  

Direct numerical simulation of riblets drag reduction: accounting for the corner singularity in arbitrary geometries

open access: yes
LAUREA MAGISTRALEIl seguente lavoro continua nello sviluppo di un codice a differenze finite e contorni immersi, usato per simulare la riduzione della resistenza causata dalle riblets tramite Simulazioni Numeriche Dirette (DNS).
Ronchetti, Giacomo
core  

Measurements of the Effects of Streamwise Riblets on Boundary Layer Turbulence

open access: yes, 2017
This study presents experimental results on the effects of riblets on the coherent structures of turbulence within a turbulent spot. The riblet spacings of the study correspond to 0.5 and 1.5 times the natural spacing of the low-speed streak.
Metin I. Yaras, Derek B. Ancrum
core   +1 more source

Investigation on the Mechanism of Drag Modification over Triangular Riblets

open access: yesJournal of Applied Fluid Mechanics, 2020
This paper presents experimental and numerical investigations on the modification of local spanwise skin-friction over triangular riblets under the total drag reduction condition.
M. M. Zhang, Z. L. Zhang, M. Zhao
doaj  

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