The Effects of Air-Borne Water Mist on a Forced Convection Boundary Layer Flame over a Non-Charring Solid
NAVY TECHNOLOGY CENTER FOR SAFETY AND SURVIVABILITY WASHINGTON DC
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This report presents preliminary results of an experimental study of water mist suppression of forced flow boundary layer flames over a non-charring solid, where fine water mist was introduced with the incoming air. In this configuration, extinguishment at high mist flow rates is achieved only by flame blow-off. With small droplets 5O micrometer at low mist flow rates, the time-averaged local burning rate seems to be suppressed in the leading section and enhanced downstream. A comparison of the burning rate and temperature data between tests with mist and tests with nitrogen dilution suggest that this enhancement in burning rate is caused by mist-induced turbulence.
- Marine Engineering
- Safety Engineering
- Combustion and Ignition