Coupling of Large Fire Phenomenon with Object Geometry and Object Thermal Response
- 1 November 1997
- journal article
- research article
- Published by SAGE Publications in Journal of Fire Sciences
- Vol. 15 (6), 427-442
- https://doi.org/10.1177/073490419701500601
Abstract
The effect of an object in or near a large fire on the physical pro cesses which result in the heat flux from the fire is defined by the object geometry and temperature, and therefore the fire phenomena and the object physical states can be coupled. Two primary modes of coupling, radiative and convective, and their relative influence on heat flux, are investigated using observations from ex perimental data and numerical simulations. Radiative coupling occurs when a comparatively cold object reduces the incident heat flux (by up to 65%) due to radiative cooling of nearby media. Convective coupling includes: (1) changes in the geometry of the flame zone, and (2) object-induced turbulence which alters and often enhances the flow, mixing, and, hence, combustion processes within the fire. Increases in the heat flux approaching a factor of three have been observed due to these phenomena.Keywords
This publication has 10 references indexed in Scilit:
- Fire characterization and object thermal response for a large flat plate adjacent to a large JP-4 fuel firePublished by Office of Scientific and Technical Information (OSTI) ,1997
- Computational fire modeling for aircraft fire researchPublished by Office of Scientific and Technical Information (OSTI) ,1996
- Actively Cooled Calorimeter Measurements and Environment Characterization In a Large Pool FireFire and Materials, 1996
- COUPLED THERMAL RESPONSE OF OBJECTS AND PARTICIPATING MEDIA IN FIRES AND LARGE COMBUSTION SYSTEMSNumerical Heat Transfer, Part A: Applications, 1995
- Test unit effects on heat transfer in large firesJournal of Hazardous Materials, 1990
- Thermal Measurements in Large Pool FiresJournal of Heat Transfer, 1989
- The numerical computation of turbulent flowsComputer Methods in Applied Mechanics and Engineering, 1974
- Experimental Measurement of Heat Transfer to a Cylinder Immersed in a Large Aviation-Fuel FireJournal of Heat Transfer, 1973
- A calculation procedure for heat, mass and momentum transfer in three-dimensional parabolic flowsInternational Journal of Heat and Mass Transfer, 1972
- Kinetics of dispersed carbon formationCombustion and Flame, 1971