Fire-Front Propagation Using the Level Set Method.
Fire-Front Propagation Using the Level Set Method.
(218 K)
Rehm, R. G.; McDermott, R. J.
NIST Technical Note 1611; NIST TN 1611; 14 p. April
2009.
Keywords:
fire spread; wildland fires; wildland urban interface;
fuels; equations; formulations; wind effects;
methodology
Abstract:
Propagation of an outdoor fire front in wildland or in a
combination of wildland and structural fuels (the
so-called wildland-urban interface or WUI fire), can be
modelled as an initial-value problem using either a
Lagrangian or an Eulerian description. The equations
associated with each description arc presented, and the
methods used to solve the equations are discussed. Some
comparisons bctween the two methods are also made. The
emphasis in this report is on the Eulerian equations and
on the level-set numerical method. Earlier studies had
presented the Lagrangian formulation, and a
method-of-lines solution. Advantages of the
Eulerian/level-set method are discussed, and several
examples that illustrate these advantages are presented.
