Large Eddy Simulation of Fire Phenomena.
Large Eddy Simulation of Fire Phenomena.
(405 K)
Baum, H. R.
U.S./Japan Government Cooperative Program on Natural
Resources (UJNR). Fire Research and Safety. 12th Joint
Panel Meeting. October 27-November 2, 1992, Tsukuba,
Japan, Building Research Inst., Ibaraki, Japan Fire
Research Inst., Tokyo, Japan, 67-74 pp, 1992.
Keywords:
fire safety; fire research; simulation; vapor phases;
equations
Abstract:
An approach to the simulation of gas phase fire
phenomena based on the computation of the convection and
combustion processes directly from the governing
equations is presented. The methodology involves the
explicit calculation of the large eddy structure induced
by the fire from the geometric length scales describing
the fire scenario down to a few centimeters. These
computations are coupled to a local scale "thermal
element" model which solves the equations governing
combustion and radiation processes in a local coordinate
system moving with the large scale motion. The basic
theory behind the methodology is outlined and sample
results of computations of both large and small scale
phenomena are presented.
Building and Fire Research Laboratory
National Institute of Standards and Technology
Gaithersburg, MD 20899