Realisation of Fractal Grid-Induced Turbulence Strength with PTFV: Effects of Grid Geometry

TS Lee, EH Ooi, WS Chang, JJ Foo - Flow, Turbulence and Combustion, 2023 - Springer
The unravelling of multilength-scale insert-generated turbulence, particularly, the induced-
forcing plays critical role in the fundamental comprehension of energy formation and decay …

Fractal grid-induced turbulence strength characterization via piezoelectric thin-film flapping velocimetry

TS Lee, EH Ooi, WS Chang, JJ Foo - Scientific Reports, 2021 - nature.com
The centerline streamwise and cross-sectional (x/D h= 0.425) turbulence characteristics of a
2D planar space-filling square-fractal-grid (SFG) composed of self-similar patterns …

[HTML][HTML] Augmentation of piezoelectric thin-film flapping velocimetry turbulence strength detection via machine learning

TS Lee, EH Ooi, WS Chang, JJ Foo - Physics of Fluids, 2025 - pubs.aip.org
Qualitatively evaluating the fundamental mechanical characteristics of square-fractal-grid
(SFG)-generated turbulent flow using piezoelectric thin-film flapping velocimetry (PTFV) is …

Partially-covered fractal induced turbulence on fins thermal dissipation

SH Chew, SM Hoi, MV Tran, JJ Foo - Scientific Reports, 2022 - nature.com
The impacts of partially-covered fractal grids induced turbulence on the forced convective
heat transfer across plate-fin heat sink at Reynolds number Re Dh= 22.0× 103 were …

Fractal-induced 2D flexible net undulation

MJS Goh, YS Chiew, JJ Foo - Scientific Reports, 2021 - nature.com
A net immersed in fractal-induced turbulence exhibit a transient time-varying deformation.
The anisotropic, inhomogeneous square fractal grid (SFG) generated flow interacts with the …

[PDF][PDF] Dissipation Scaling in Production Region of Fractal Grid Turbulence

A Sagharichi, MF Tachie - Parameters - tsfp-conference.org
The turbulence energy dissipation rate (Cε) and turbulence Reynolds number (Reλ) in the
cross-stream directions in the wake of fractal grids are investigated using high-resolution …

Coherent voltage beat distributions in the signals from piezoelectric energy harvesters in turbulent flow

K Ferko, N Chiappazzi… - Active and Passive …, 2020 - spiedigitallibrary.org
The inherent randomness and non-tunability associated with turbulent flow usually make it a
poor candidate as an energy source for piezoelectric harvesters. We have shown in prior …

Evaluation of aerodynamic coupling in side-by-side piezoelectric beams in quiescent and grid-generated turbulent flow

Z Kai, AH Danesh-Yazdi - Active and Passive Smart …, 2021 - spiedigitallibrary.org
Non-resonant harvesters such as piezoelectric cantilever beams that extract energy from
turbulence-induced vibration are often nonviable alternatives to their resonant counterparts …

Turbulence Strength Tomography via 3D Surface Transient Topology Reconstruction (STTR)

MJS GOH - 2020 - bridges.monash.edu
Turbulence is ubiquitous in life, presented here is a novel approach to turbulence
tomography using a net as surrogate to turbulence. As a prerequisite, a 3D time-series …