Frequency–time analysis, low-rank reconstruction and denoising of turbulent flows using SPOD

A Nekkanti, OT Schmidt - Journal of Fluid Mechanics, 2021 - cambridge.org
Four different applications of spectral proper orthogonal decomposition (SPOD) are
demonstrated on large-eddy simulation data of a turbulent jet. These are: low-rank …

Experimental study of eddy structures in a turbulent boundary layer using particle image velocimetry

J Carlier, M Stanislas - Journal of Fluid Mechanics, 2005 - cambridge.org
Particle image velocimetry experiments have been performed in a turbulent boundary-layer
wind tunnel in order to study the coherent structures taking part in the generation and …

Wavelet based eddy structure eduction from a backward facing step flow investigated using particle image velocimetry

C Schram, P Rambaud, ML Riethmuller - Experiments in Fluids, 2004 - Springer
The eddy structures shed in a backward facing step (BFS) flow are considered in this work.
Particle image velocimetry (PIV) measurements are performed in the recirculating region …

Flow kinematics and air entrainment under laboratory spilling breaking waves

B Na, KA Chang, HJ Lim - Journal of fluid mechanics, 2020 - cambridge.org
Laboratory measurements of velocity fields and void fraction under spilling breaking waves
are presented. Modified particle image velocimetry was used to quantify the flow kinematics …

Turbulent flow field and air entrainment in laboratory plunging breaking waves

B Na, KA Chang, ZC Huang… - Journal of Geophysical …, 2016 - Wiley Online Library
This paper presents laboratory measurements of turbulent flow fields and void fraction in
deep‐water plunging breaking waves using imaging and optical fiber techniques. Bubble …

A review of in-situ optical flow measurement techniques in the Deepwater Horizon oil spill

AB Osman, M Ovinis - Measurement, 2020 - Elsevier
The ability to estimate the flow rate of an oil spill from a well blowout is crucial in determining
the appropriate type of response and containment method, as well as to gauge the efficacy …

Dynamics of flow structures and transport phenomena, 1. Experimental and numerical techniques for identification and energy content of flow structures

JB Joshi, MV Tabib, SS Deshpande… - Industrial & …, 2009 - ACS Publications
Most chemical engineering equipment is operated in the turbulent regime. The flow patterns
in this equipment are complex and are characterized by flow structures of wide range of …

Confinement effects in shallow-water jets

AM Shinneeb, R Balachandar… - Journal of Hydraulic …, 2011 - ascelibrary.org
This paper documents measurements of the mean velocity field and turbulence statistics of
an isothermal, round jet entering a shallow layer of water. The lower boundary of the jet was …

Effect of hydrophobicity on turbulent boundary layer under water

H Haibao, D Peng, Z Feng, S Dong, W Yang - Experimental Thermal and …, 2015 - Elsevier
Turbulent flow field on hydrophobic surface is measured in the gravitational low-speed water
tunnel using hot-film anemometer. The mean velocity profile shows that hydrophobic surface …

Morphology of secondary flows in a curved pipe with pulsatile inflow

MW Plesniak, KV Bulusu - Journal of Fluids …, 2016 - asmedigitalcollection.asme.org
A multiplicity of secondary flow morphologies is produced in the arterial network due to
complexities in geometry (such as curvature, branching, and tortuosity) and pulsatility in the …