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Experimental Analysis of Flame Surface Density Modeling for Premixed Turbulent Combustion Using Aqueous Autocatalytic Reactions by S.S Shy; W.K I; E.I Lee; T.S Yang is a Engineering article available to read on EtoBox.

What is Experimental Analysis of Flame Surface Density Modeling for Premixed Turbulent Combustion Using Aqueous Autocatalytic Reactions about?

In the flamelet framework for premixed turbulent combustion, a transport equation for the flame surface density, commonly known as the ⌺-equation, can be formulated but requires closure assumptions. We have applied an aqueous autocatalytic reaction, which produces a self-propagating chemical surface (liquid flame) with characteristics closely matching many of those assumed by flamelet models to extract full spatial statistics relating to the Bray-Moss-Libby model. The present work reports, for the first time, measurements of some unclosed terms in the ⌺-equation using liquid flames in a nearly isotropic turbulent flow field. The three-dimensional form of nearly stationary isotropic turbulence was generated near the core region between a pair of vibrating grids in a chemical tank, as verified by laser-Doppler velocimetry. Visualization of propagating surfaces is via a high-speed, successive planar chemically reacting, laser-induced fluorescence technique to extract flame surface density, vector normal to the front, and curvature. Unlike gaseous flames, liquid flames with essentially constant laminar propagating (burning) velocity are approximately free of thermal expansion and heat

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Author

S.S Shy; W.K I; E.I Lee; T.S Yang

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0010-2180)

Published

1999

Language

EN

Field

Engineering (Physical Sciences)