Results 11 to 20 of about 1,839,129 (302)

Numerical Investigation on Flow Separation Control of Low Reynolds Number Sinusoidal Aerofoils [PDF]

open access: yes, 2016
The paper presents a computational analysis of the characteristics of a NACA 634- 021 aerofoil incorporated with sinusoidal leading-edge protuberances at Re = 14,000. The protuberances are characterized by an amplitude and wavelength of 12% and 50% of
Cai C.   +4 more
core   +1 more source

Effects of Plasma Actuator Discharge on Lift-Enhancement and Flow Patterns of Flying Wing Aircraft [PDF]

open access: yesXibei Gongye Daxue Xuebao, 2018
The nanosecond pulsed plasma discharge actuator is used on a flying wing aircraft. At the angles of attack rang from -4° to 28°, the impact of plasma actuator arrangement position and discharge frequency on lift-enhancement effect is tested.

doaj   +1 more source

Thermal and Phase Change Process in a Locally Curved Open Channel Equipped with PCM-PB and Heater during Nanofluid Convection under Magnetic Field

open access: yesMathematics, 2022
Thermal performance and phase-change dynamics in a channel having a cavity equipped with a heater and phase-change material (PCM)-packed bed (PB) region are analyzed during nanoliquid convection under an inclined magnetic field.
Walid Aich   +5 more
doaj   +1 more source

Structure and Topology Analysis of Separated Vortex in Forward-Swept Blade

open access: yesFrontiers in Energy Research, 2021
Flow separation commonly affects the stability of turbomachines, especially under low-flowrate conditions. Compared with conventional blades, a forward-swept blade is more efficient at high flowrates.
D. Liang   +4 more
doaj   +1 more source

Heat Induced Separation in Upward Impinging Jet Flows

open access: yesJournal of Thermal Science and Technology, 2011
A confined, round, laminar impinging jet, fed upward against the gravity, is studied, both experimentally and numerically, under the influence of an impingement-surface heating.
Chandra SHEKHAR, Koichi NISHINO
doaj   +1 more source

Analysis of Non-steady Separated Turbulent Flow in an Asymmetric Plane Diffuser by Direct Numerical Simulations

open access: yesJournal of Fluid Science and Technology, 2010
Direct numerical simulations (DNS) of turbulent flow through an asymmetric plane diffuser, consisting of a flat wall and an inclined wall, were performed using a high-order finite difference method, to reveal the relationship between turbulence and flow ...
Takashi OHTA, Takeo KAJISHIMA
doaj   +1 more source

Global stability of separated flows: Subsonic flow past corners: F separated flows

open access: yesTheoretical and Computational Fluid Dynamics, 2011
The triple-deck equations for the steady subsonic flow past a convex corner are solved numerically using a novel technique based on Chebychev collocation in the direction normal to the body combined with finite differences in the direction along the flow.
Logue, R. P.   +2 more
openaire   +2 more sources

Increasing L/D Ratio of Wing by Delaying Flow Separation for Better Aerodynamic Performance [PDF]

open access: yesJournal of Applied Fluid Mechanics
To improve the aerodynamic efficiency of the aircraft, the article focuses on optimizing the L/D ratio through postponement of flow separation. Elevating the L/D ratio leads to diminished drag and delays stall occurrence at high angles of attack (α). The
L. P. Ramesh, V. Mugendiran, G. Sivaraj
doaj   +1 more source

The Effect of an Upstream Control Object in Low-Speed Rotation upon the Flow past a Long Plate

open access: yesJournal of Fluid Science and Technology, 2011
In the present study, the authors consider a control of the flow past a semi-infinite plate with a blunt front. The flow is one of the simplest separated-and-reattaching flows, and can be a model such as heat exchangers and flow straighteners commonly ...
Katsuya HIRATA   +3 more
doaj   +1 more source

Pressure Fluctuation Characteristics of the Short-Radius Elbow Pipe for FBR in the Postcritical Reynolds Regime

open access: yesJournal of Fluid Science and Technology, 2009
For the Japan Sodium-cooled Fast Reactor, an experimental study on the fluctuating pressure of the hot legs was carried out with tests using a 1/3-scale model.
Tadashi SHIRAISHI   +3 more
doaj   +1 more source

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