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Title: Instability growth rates in hydrofluorocarbon/air flames: analysis of the Rayleigh-Taylor instability
Hydrofluorocarbons (HFC), which are mildly flammable and pose potential fire risks, have received greater attention as a viable low global warming potential alternative to traditional refrigerant and fire-suppressant compounds. However, the reactivity of these compounds can be exacerbated under certain conditions, with buoyancy-induced instability growth promoting flame acceleration and substantially increasing flame speeds of HFC/oxidizer deflagrations. Therefore, the flame acceleration of HFC/oxidizer deflagrations must be investigated to properly assess the flammability characteristics of these compounds. This study investigates the effect of the Rayleigh-Taylor instability on instability growth rates during the linear regime. To this end, simulations were performed tracking the growth of instabilities caused by an initial disturbance in the flame front, from which dispersion relations were derived for R-32/air mixtures varying the gravitational acceleration.  more » « less
Award ID(s):
2053239
PAR ID:
10504135
Author(s) / Creator(s):
;
Publisher / Repository:
Spring Techical Meeting of the Eastern States Section of the Combustion Institute
Date Published:
Journal Name:
Spring Techical Meeting of the Eastern States Section of the Combustion Institute
Format(s):
Medium: X
Location:
Athens, Georgia
Sponsoring Org:
National Science Foundation
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