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International Heat Transfer Conference 15

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

DNS and Advanced Laser Diagnostics of Turbulent Combustion

Mamoru Tanahashi
Department of Mechanical and Aerospace Engineering Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan

Masayasu Shimura
Department of Mechanical and Aerospace Engineering Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8550, Japan

DOI: 10.1615/IHTC15.kn.000022
pages 405-416

Abstract

Detailed understanding of turbulent combustion phenomena is very important to develop high efficiency combustors which contribute to resolve global environmental issues. Since turbulent combustion involves strong interactions between turbulence and combustion reactions, highly-sophisticated measurement techniques and numerical simulations both for fluid motion and flames are required. In this talk, current state and perspective both of laser diagnostics and direct numerical simulations (DNS) of turbulent combustion are provided. For laser diagnostics, state-of-the-art stereoscopic particle image velocimetry (PIV) for turbulence research is combined with advanced planar laser induced fluorescence (PLIF) techniques such as simultaneous multi-radicals highspeed PLIF and stereoscopic PIV are presented and investigations on local flame structure, global/local flame dynamics and three-dimensional flame structures are surveyed. As for DNS of turbulent combustion, after presenting recent progress in combustion DNS, possibility of perfect simulations of IC engine is shown based on the perspective of DNS of turbulent combustion.

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