Creeping Flame Spread along Fuel Cylinders in Forced and Natural Flows and Microgravity
نویسندگان
چکیده
MICHAEL A. DELICHATSIOS,1 ROBERT A. ALTENKIRCH,2 MATTHEW F. BUNDY,3 SUBRATA BHATTACHARJEE,4 LIN TANG2 and KURT SACKSTEDER5 Fire Science and Technology Laboratory CSIRO/DBCE Fire Safety Engineering Division North Ryde, NSW Australia 1670 NSF Engineering Research Center Department of Mechanical Engineering Mississippi State University Mississippi State, MS 39762, USA National Institute of Standards and Technology Gaithersburg, MD 20899, USA Department of Mechanical Engineering San Diego State University San Diego, CA 92182, USA NASA Glenn Research Center Cleveland, OH 44135, USA
منابع مشابه
Radiation-Driven Flame Spread Over Thermally-Thick Fuels in Quiescent Microgravity Environments
Microgravity experiments on flame spread over thermally-thick fuels were conducted using foam fuels to obtain low density and thermal conductivity, and thus large spread rate (Sf) over thermally-thick fuels compared to dense fuels such as PMMA. This scheme enabled meaningful results to be obtained even in 2.2 second drop tower experiments. It was found that, in contrast conventional understandi...
متن کاملFlame Spread along Free Edges of Thermally Thin Samples in Microgravity
The effects of imposed flow velocity on flame spread along open edges of a thermally thin cellulosic sample in microgravity were studied experimentally and theoretically. In this study, the sample was ignited locally at the middle of the 4 cm wide sample, and subsequent flame spread reached both open edges of the sample along the direction of the flow. The following flame behaviors were observe...
متن کاملEffects of Finite Sample Width on Transition and Flame Spread in Microgravity
In most microgravity studies of flame spread, the flame is assumed to be two-dimensional, and twodimensional models are used to aid data interpretation. However, since limited space is available in microgravity facilities, the flames are limited in size. It is important, therefore, to investigate the significance of three-dimensional effects. Three-dimensional and two-dimensional simulations of...
متن کاملEffect of Gap Height on Thin Fuel Opposed Flow Flame Spread in the Narrow Channel Apparatus
The Narrow Channel Apparatus (NCA) is designed to establish a fully developed laminar flow profile above and below a thin, flat, solid fuel or on one side of a thick fuel for flame spread investigations. Due in part to its ability to suppress buoyantly-induced flow, the NCA is under investigation as a possible test method for screening materials for space flight applications. This study focused...
متن کاملExperimental Study of Aluminum Particle Flame Evolution in Normal and Micro-Gravity
This research addresses the flame structure of single aluminum particles burning in air with the emphasis on the transition from spherically symmetric to non-symmetric combustion regime. The unique feature of this work is that free motionless aluminum particles were produced and ignited in both normal and microgravity environments. That allowed us to observe whether the particle flame non-symme...
متن کامل