Results 11 to 20 of about 816,958 (339)

Flow Control, Active and Passive Applications [PDF]

open access: goldApplied Sciences, 2023
The Boundary Layer (BL) dynamic performance greatly affects the forces acting on any Bluff body [...]
Josep M. Bergadà, Gabriel Bugeda
doaj   +7 more sources

Microfluidic flow-cell with passive flow control for microscopy applications. [PDF]

open access: yesPLoS ONE, 2020
We present a fast, inexpensive and robust technique for constructing thin, optically transparent flow-cells with pump-free flow control. Using layers of glass, patterned adhesive tape and polydimethylsiloxane (PDMS) connections, we demonstrate the ...
Nicholas A W Bell, Justin E Molloy
doaj   +4 more sources

Passive control of flow structure interaction between a sphere and free-surface [PDF]

open access: diamondEPJ Web of Conferences, 2012
Flow characteristics for both a smooth and a vented sphere such as velocity vectors, patterns of streamlines, vorticity contours, stream-wise fluctuations, cross-stream velocity fluctuations and Reynolds stress correlations between a sphere and free ...
Akilli Huseyin   +4 more
doaj   +2 more sources

Passive flow control valve for protein delivery

open access: yesCogent Engineering, 2017
Passive flow control valves are usually intended to deliver or drain a fluid at a constant rate independently of pressure variations. Microfluidic devices made of a stack of two plates are considered here: the first plate comprises a flexible silicon ...
L. Cornaggia   +7 more
doaj   +3 more sources

Active and Passive Flow Control around Simplified Ground Vehicles

open access: diamondJournal of Applied Fluid Mechanics, 2012
The aim of this work is to control the flow around ground vehicles by active or/and passive strategies. The active control is achieved by steady, pulsed or closed-loop jets located at the backof the simplified car model.
C.H Bruneau   +4 more
doaj   +2 more sources

Noise Reduction of Open Cavities by Passive Flow Control Methods at Transonic Speeds using OpenFOAM

open access: greenHavacılık ve Uzay Teknolojileri Dergisi, 2021
Flow over a cavity is one of the most intriguing problems in aeronautics. Although geometry is simple, the physics of cavity requires uttermost attention.
Oğuzhan DEMİR   +2 more
doaj   +2 more sources

The development of passive flow control vortices [PDF]

open access: yes, 2004
Surface flow visualisation and Particle Image Velocimetry (PIV) were used to investigate the flow-field of sub-boundary layer vane vortex generators (VVGs) and steady jet vortex generators (SJVGs) in a separated flow at 20m/s.
Maina, Edward Ikinya
core   +2 more sources

A Review of Passive Constant Flow Regulators for Microfluidic Applications

open access: yesApplied Sciences, 2020
This review gives an overview of passive constant flow regulators dedicated to microfluidic applications. Without external control and energy consumption, these devices deliver a constant flow rate regardless of pressure variations, making them very ...
Eric Chappel
doaj   +3 more sources

Passivity-Based Output-Feedback Control of Turbulent Channel Flow [PDF]

open access: yesAutomatica, 2016
This paper describes a robust linear time-invariant output-feedback control strategy to reduce turbulent fluctuations, and therefore skin-friction drag, in wall-bounded turbulent fluid flows, that nonetheless gives performance guarantees in the nonlinear
Heins, P.H., Jones, B., Sharma, A.S.
core   +6 more sources

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