Dynamics of large-scale vortices in non-swirling and swirling turbulent jets. time-resolved tomographic PIV measurements

Dulin, V. M.; Abdurakipov, Sergey S.; Markovich, Dmitriy M.; Hanjalić, K

Dynamics of large-scale vortices in non-swirling and swirling turbulent jets. time-resolved tomographic PIV measurements

Conference paper (2017)

Authors

V. M. Dulin Novosibirsk State University

Sergey S. Abdurakipov Novosibirsk State University

Dmitriy M. Markovich Novosibirsk State University

K Hanjalić ChemE/Transport Phenomena

Research Group

ChemE/Transport Phenomena

To reference this document use:

http://resolver.tudelft.nl/uuid:4f32fd32-73ff-45e5-a42b-82847d6417b3

More Info

expand_more

Published Date

2017

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Research Group

ChemE/Transport Phenomena

Abstract

The paper reports on a parallel study of the dynamics of large-scale vortical structures in non-swirling, low-swirl and high-swirl turbulent jets by means of the time-resolved tomographic PIV technique. 3D realizations of the instantaneous velocity and velocity gradients, local strain and rotation rates, helicity and pressure fluctuations are analyzed. Deformation of the large-scale vortices is studied by evaluating the local stretching/compression rates and local values of the Lamb vector divergence. Linear stability analysis is also applied to the mean velocity profiles in order to identify the most unstable azimuthal modes.

Files

233.pdf

(pdf | 5.93 Mb)

License info not available

Download not available