Review of flow-control devices for wind-turbine performance enhancement

MZ Akhter, FK Omar - Energies, 2021 - mdpi.com
It is projected that, in the following years, the wind-energy industry will maintain its rapid
growth over the last few decades. Such growth in the industry has been accompanied by the …

Spectral proper orthogonal decomposition

M Sieber, CO Paschereit… - Journal of Fluid …, 2016 - cambridge.org
The identification of coherent structures from experimental or numerical data is an essential
task when conducting research in fluid dynamics. This typically involves the construction of …

Fundamental properties of fluidic oscillators for flow control applications

R Woszidlo, F Ostermann, HJ Schmidt - AIAA Journal, 2019 - arc.aiaa.org
The presented work provides a technical summary of the fundamental time-resolved
properties of a spatially oscillating jet emitted by a fluidic oscillator. The discussion focuses …

Flow prediction using dynamic mode decomposition with time-delay embedding based on local measurement

Y Yuan, K Zhou, W Zhou, X Wen, Y Liu - Physics of Fluids, 2021 - pubs.aip.org
We develop a method for the prediction of flow fields based on local particle image
velocimetry (PIV) measurement. High spatial resolution can be achieved by focusing PIV on …

Properties of a sweeping jet emitted from a fluidic oscillator

F Ostermann, R Woszidlo, CN Nayeri… - Journal of Fluid …, 2018 - cambridge.org
This experimental study investigates the flow field and properties of a sweeping jet emitted
from a fluidic oscillator into a quiescent environment. The aspect ratio of the outlet throat is 1 …

The time-resolved natural flow field of a fluidic oscillator

R Woszidlo, F Ostermann, CN Nayeri… - Experiments in fluids, 2015 - Springer
The internal and external flow field of a fluidic oscillator with two feedback channels are
examined experimentally within the incompressible flow regime. A scaled-up device with a …

Flow dynamics of a fluidic oscillator with internal geometry variations

X Wen, Z Li, L Zhou, C Yu, Z Muhammad, Y Liu… - Physics of …, 2020 - pubs.aip.org
An experimental study is conducted to examine the impact of internal geometry of a fluidic
oscillator on its working mechanisms, ie, the widths of the inlet wedge W 1, mixing chamber …

Pulsed impinging jets for heat transfer: A short review

G Saliba, A Batikh, S Colin, L Baldas - ASME Journal of Heat and Mass …, 2023 - hal.science
Because of their effectiveness and adaptability, impinging jets have found their way into a
host of applications ranging from cooling turbine blades, to heat management of electronic …

On the unsteady interactions between a sweeping jet and afterbody vortices

X Chen, S Zhong, O Ozer, A Weightman, G Gao - Physics of Fluids, 2023 - pubs.aip.org
In this paper, a sweeping jet was applied to control the afterbody vortices behind a 30
slanted-base cylinder at a Reynolds number of 87 000. Phase-locked stereo particle image …

The interaction between a spatially oscillating jet emitted by a fluidic oscillator and a cross-flow

F Ostermann, R Woszidlo, CN Nayeri… - Journal of Fluid …, 2019 - cambridge.org
This experimental study investigates the fundamental flow field of a spatially oscillating jet
emitted by a fluidic oscillator into an attached cross-flow. Dominant flow structures, such as …