Coherent structures in a swirling jet with vortex breakdown and combustion. Investigation by PIV and PLIF

A. S. Lobasov, L. M. Chikishev, V. M. Dulin, D. M. Markovich

Результат исследования: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике материалов конференциинаучнаярецензирование

Аннотация

This paper reports on the investigation of coherent structures in a high-swirl jet with vortex breakdown (Re = 5 000) and combustion of a methane/air mixture (with equivalence ratio equal to 0.7 and 1.4). The measurements were performed by a combined application of the stereo PIV, OH PLIF and HCHO PLIF techniques. The velocity data were processed by the proper orthogonal decomposition (POD) and the PLIF data was conditionally sampled according to the POD correlation coefficients. For the non-reacting jet and lean flame, the POD has revealed presence of a coherent structure, consisted of helical vortex structures in the inner and outer mixing layers. Based on the PLIF data it was found that the inner spiraling vortex structure was correlated with regions of positive fluctuations of the local heat release.

Язык оригиналаанглийский
Название основной публикацииTHMT 2018 - Proceedings of the 9th International Symposium on Turbulence Heat and Mass Transfer
ИздательBegell House Inc.
Страницы213-225
Число страниц13
ISBN (электронное издание)9781567004687
DOI
СостояниеОпубликовано - 2018
Событие9th International Symposium on Turbulence Heat and Mass Transfer, THMT 2018 - Rio de Janeiro, Бразилия
Продолжительность: 10 июл. 201813 июл. 2018

Серия публикаций

НазваниеProceedings of the International Symposium on Turbulence, Heat and Mass Transfer
Том2018-July
ISSN (электронное издание)2377-2816

Конференция

Конференция9th International Symposium on Turbulence Heat and Mass Transfer, THMT 2018
Страна/TерриторияБразилия
ГородRio de Janeiro
Период10.07.201813.07.2018

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