Results 11 to 20 of about 12,588,899 (282)

Passive Control of Base Pressure: A Review

open access: yesApplied Sciences, 2021
In the present world, passive control finds application in various areas like flow over blunt projectiles, missiles, supersonic parallel diffusers (for cruise correction), the engine of jets, static testbeds of rockets, the ports of internal combustion ...
Ambareen Khan   +2 more
doaj   +1 more source

Passive solar-energy air-heating wall panels [PDF]

open access: yes, 1987
The development of products which enable passive solar-energy air-heating to be integrated into the heating strategies of public, commercial and industrial buildings is described. These buildings are, in general, only occupied significantly during the
Hobday, R. A.
core   +7 more sources

Numerical Study of Cylinder Drag Coefficient Reduction Using Passive Flow Control [PDF]

open access: yesمهندسی مکانیک شریف, 2022
In this study, the cylinder drag coefficient is reduced by using passive flow control. Installing a flat plate in two heights and different longitudinal distances in upstream flow increases the upstream flow momentum of the cylinder, leading to the ...
S. sh. Sadeghi, N. Nabatian
doaj   +1 more source

Comparison of Passive Flow Control Methods for a Cavity in Transonic Flow [PDF]

open access: yesJournal of Aircraft, 2016
A comparative study of different passive control techniques was conducted on a cavity with a length of 320 mm with length-to-depth and length-to-width ratios of five and two, respectively. The tests were conducted at a freestream Mach number of 0.71. Both leading-edge and trailing-edge modifications were included in the studies.
Saddington, A. J.   +2 more
openaire   +2 more sources

ACarleton/Kirigami-sheets-for-passive-flow-control: Kirigami sheets for passive flow control

open access: yes, 2023
Data repository Full Changelog: https://github.com/ACarleton/Kirigami-sheets-for-passive-flow-control/commits ...
ACarleton
core   +1 more source

Control of Turbulent Flow over a Circular Cylinder Using Tabs

open access: yesMathematics, 2023
In this study, we investigate tabs applied to turbulent flow over a circular cylinder for the reductions of the mean drag and lift fluctuations. Tabs are small and thin passive devices attached to the upper and lower surfaces of a circular cylinder near ...
Junyoung Seo, Jinhyeok Yun, Jungil Lee
doaj   +1 more source

Investigation of passive flow control techniques to enhance the stall characteristics of a microlight aircraft [PDF]

open access: yes, 2013
This report investigates the enhancement of aerodynamic stall characteristics of a Skyranger microlight aircraft by the use of passive flow control techniques, namely vortex generators and turbulators.
Mwenegoha, HA, Jabbal, M
core   +1 more source

Control of shock-induced boundary layer separation at supersonic speeds [PDF]

open access: yes, 2007
PhDThe results of a systematic experimental investigation into the effects that Sub- Boundary Layer Vortex Generators (SBVGs) have on reducing normal shock-induced turbulent boundary layer separation are presented.
Cohen, Giel S.
core   +4 more sources

Numerical Study of Combined Drag Reduction Bases on Vortex Generators and Riblets for the Ahmed Body using IDDES Methodology [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
The flow fields around vehicle drag reduction devices are three-dimensional, complicated, and unsteady. Meanwhile, the small scale of the drag reduction device brings more challenges to the simulation. An Improved Delayed Detached Eddy Simulation (IDDES)
X. Yang, Y. Hu, Z. Gong, J. Jian, Z. Liu
doaj   +1 more source

Nonlinear control of unsteady finite-amplitude perturbations in the Blasius boundary-layer flow [PDF]

open access: yes, 2013
The present work provides an optimal control strategy, based on the nonlinear Navier–Stokes equations, aimed at hampering the rapid growth of unsteady finite-amplitude perturbations in a Blasius boundary-layer flow.
DE PALMA, Pietro   +2 more
core   +1 more source

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