Analysis of Turbulent Premixed Flames in V-shape Flames with Fractal Turbulence Generators : Part. III Turbulent Burning Velocity

Juhan Kim; Keeman Lee

doi:10.15231/jksc.2021.26.4.029

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2021 Vol.26, Issue 4 Preview Page Next Page

Research Article

Analysis of Turbulent Premixed Flames in V-shape Flames with Fractal Turbulence Generators : Part. III Turbulent Burning Velocity 프랙탈 난류생성판을 갖는 V-shape 화염에서 난류 예혼합 화염 분석 : Part. III 난류 연소속도

31 December 2021. pp. 29-40

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Abstract

This study focused on calculating the turbulent flame speed in a V-shape turbulent premixed flame using a circular fractal turbulence generator. In previous studies [Part. I turbulent flow characteristics in a Non-Reacting Field], [Part. II characteristics of turbulent flame structures], the non-reactive turbulent flow and turbulent flame structure for the V-shape flame of a fractal turbulence generator were investigated in detail. Two types of turbulent burning velocities are evaluated : local displacement and consumption speeds. The local consumption speed is calculated via the image processing of flame surface density. The results show that turbulent burning velocity increases much with fractal grids as compared with the conventional grids perforated plate and mesh. Finally, it was confirmed that the correlation between the turbulent flow factor and the two turbulent burning velocities of each turbulence generator was collapsed well with a specific correlation equation.

Keywords

Flame surface density

Fractal grid

Local consumption speed

Local displacement speed

OH-PLIF

Turbulent generator

Turbulent premixed flames

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Information

Publisher :The Korean Society Combustion
Publisher(Ko) :한국연소학회
Journal Title :Journal of The Korean Society Combustion
Journal Title(Ko) :한국연소학회지
Volume : 26
No :4
Pages :29-40
Received Date : 2021-11-14
Revised Date : 2021-11-28
Accepted Date : 2021-12-06
DOI :https://doi.org/10.15231/jksc.2021.26.4.029

Journal of The Korean Society Combustion ISSN:1226-0959(Print) 2466-2089(Online) 한국연소학회지

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