Open AccessInvestigation of Large Scale Motions in Zero and Adverse Pressure Gradient Turbulent Boundary Layers Using High-Spatial-Resolution PIV
Author(s) -
Daniel Jovic,
Muhammad Shehzad,
Bihai Sun,
Christophe Cuvier,
Christian Willert,
Yaşar Ostovan,
Jean-Marc Foucaut,
Callum Atkinson,
Julio Soria
Publication year - 2021
Publication title -
international symposium on particle image velocimetry.
Language(s) - English
Resource type - Journals
ISSN - 2769-7576
DOI - 10.18409/ispiv.v1i1.170
Subject(s) - particle image velocimetry , pressure gradient , boundary layer , turbulence , adverse pressure gradient , mechanics , reynolds number , momentum (technical analysis) , scale (ratio) , flow separation , boundary layer thickness , boundary (topology) , materials science , physics , mathematics , mathematical analysis , finance , quantum mechanics , economics
Particle image velocimetry (PIV) has been used to capture the high-spatial-resolution (HSR) two-component, two-dimensional (2C-2D) velocity fields of a zero-pressure-gradient (ZPG) turbulent boundary layer (TBL) and of an adverse-pressure-gradient (APG) TBL. Proper Orthogonal Decomposition (POD) is performed on the measured velocity fields to characterize the velocity fields as large or small scale motions (LSMs or SSMs), with further characterisation of the LSMs into high and low momentum events. This paper reports the findings of the PIV experiment and the subsequent analysis of the high Reynolds number ZPG and APG TBLs