Heat Transfer in an Intumescent Material Using a Three-Dimensional Lagrangian Model.
Heat Transfer in an Intumescent Material Using a
Three-Dimensional Lagrangian Model.
(428 K)
Butler, K. M.; Baum, H. R.; Kashiwagi, T.
National Institute of Standards and Technology (NIST)
and Society of Fire Protection Engineers (SFPE).
International Conference on Fire Research and
Engineering (ICFRE). Proceedings. September 10-15,
1995, Orlando, FL, SFPE, Boston, MA, Lund, D. P.;
Angell, E. A., Editor(s)(s), 261-266 pp, 1995.
Keywords:
fire research; bubbles; intumescence; mathematical
models; numerical analysis; thermoplastics; heat
transfer; thermal conductivity
Abstract:
The addition of heat transfer calculations to a
three-dimensional, time-dependent numerical model of
intumescent materials is described. Intumescent
materials protect an underlying substrate from fire
through endothermic chemical reactions producing bubbles
and through the reduced thermal conductivity of the
final porous char. These mechanisms are demonstrated
for a single bubble and multiple bubbles. Both flow and
temperature fields within the intumescent melt are
determined by summing fields due to the individual
bubbles.
