Results 51 to 60 of about 1,004,206 (164)

Active Flow Control and Dynamic Analysis in Droplet Microfluidics. [PDF]

Annu Rev Anal Chem (Palo Alto Calif), 2021
Shi N, Mohibullah M, Easley CJ.
europepmc   +1 more source

Adaptive Separation Control System Using Vortex Generator Jets for Time-Varying Flow

Journal of Applied Fluid Mechanics, 2008
Flow separation is mostly an undesirable phenomenon and boundary layer control is an important technique for flow separation problems on airfoils and in diffusers.
H Hasegawa, S Kumagai
doaj  

Active Flow Control Technology Based on Simple Droop Devices and a Co-Flow Jet for Lift Enhancement

Aerospace
The missions of modern aircraft require multiple abilities, such as highly efficient taking-off and landing, fast arrival, and long-endurance hovering. It is difficult to achieve all technical objectives using traditional aircraft design technology.
Jin Jiao, Cheng Chen, Bo Wang, Pei Ying, Qiong Wei, Shengyang Nie   +5 more
doaj   +1 more source

An Active Flow Control over the Ship Deck for Helicopter Shipboard Operations

Aerospace
This paper presents an active flow control of ship airwake over the deck to improve the safety of helicopter shipboard operations in various angles of wind over deck (WOD).
Yi Ye, Renliang Chen, Honglei Ji
doaj   +1 more source

Closed-Loop Control of Active Nematic Flows

Physical Review X
Stabilizing and shaping autonomous flows of active fluids is a fundamental challenge and a prerequisite for applications. We embed a light-responsive microtubule-based nematic in a proportional-integral control loop that adjusts the applied light intensity in response to real-time measurements of the spatially averaged flow speed.
Katsu Nishiyama, John Berezney, Michael M. Norton, Akshit Aggarwal, Saptorshi Ghosh, Zahra Zarei, Michael F. Hagan, Seth Fraden, Zvonimir Dogic   +8 more
openaire   +2 more sources

Reinforcement learning for bluff body active flow control in experiments and simulations. [PDF]

Proc Natl Acad Sci U S A, 2020
Fan D, Yang L, Wang Z, Triantafyllou MS, Karniadakis GE.   +4 more
europepmc   +1 more source

Effect of blowing flow control and front geometry towards the reduction of aerodynamic drag on vehicle models [PDF]

FME Transactions, 2019
This paper presents analyses of the effect of blowing flow control and variations on front geometry towards the reduction of aerodynamic drag on vehicle models.
Tarakka Rustan, Salam Nasaruddin, Jalaluddin, Ihsan Muhammad   +3 more
doaj  

Active Flow Control by Using Plasma Actuators

, 2016
Active flow control has recently received an increasing attention since it allows to directly manipulate the flow-field around a surface only when it is effectively requested. Aerodynamic plasma actuators supplied by a dielectric barrier discharge (DBD) can be used for this purpose. Usually, sinusoidal voltages in the range 5–50 kV peak and frequencies
openaire   +3 more sources

Effects of Tip Injection on a Turbofan Engine with Non-Invasive High-Speed Actuators

International Journal of Turbomachinery, Propulsion and Power
This paper presents an analysis of the stability margin improvement (SMI), which is also known as stall margin improvement, achieved by continuous tip air injection.
Yannik Schäfer, Marcel Stößel, Arnaud Barnique, Dragan Kožulović   +3 more
doaj   +1 more source

Active ways to control jet flows

E3S Web of Conferences
Jet flows with active control methods are numerically studied. Axial, flapping and helical oscillations of the inlet velocity profile, transverse vibrations of the inlet boundary, and harmonic disturbances from sources located on the lateral boundaries are considered.
Yakovenko Sergey, Demidenko Natalya, Vankova Olga   +2 more
openaire   +2 more sources