Cellular instabilities of expanding hydrogen/propane spherical flames at elevated pressures: Theory and experiment

Document Type

Article

Publication Date

1-1-2005

Abstract

An experimental and theoretical investigation of the onset of cellular instabilities on spherically expanding flames in mixtures of hydrogen and propane in air at elevated pressures was conducted. Critical conditions for the onset of instability were measured and mapped out over a range of pressures and mixture compositions. An asymptotic theory of hydrodynamic and diffusional-thermal cell development on flames in mixtures comprised of two scarce fuels burning in air was also formulated. Predicted values of Peclet number, defined as the flame radius at the onset of instability normalized by the flame thickness, were shown to compare favorably with the experimentally measured values.

Identifier

84964283809 (Scopus)

Publication Title

Proceedings of the Combustion Institute

External Full Text Location

https://doi.org/10.1016/j.proci.2004.08.266

ISSN

15407489

First Page

159

Last Page

167

Issue

1

Volume

30

Fund Ref

National Aeronautics and Space Administration

This document is currently not available here.

Share

COinS