Monday, March 30, 2015
10:00 a.m.

Johan Larsson
jola@umd.edu

THE BURGERS PROGRAM for FLUID DYNAMICS
and THE MINTA MARTIN FUND present
THE FLUID DYNAMICS REVIEWS SEMINAR SERIES

An Emerging Role for Numerical Modelling in Wildfire Behavior Research: Explorations, Explanations, and Hypothesis Development

Speaker: Rod Linn
Los Alamos National Laboratory

Abstract:
Advancements in computing power have created new opportunities for the use of numerical models in wildfire research. Models like the Wildland Fire Dynamics Simulator(WFDS) and FIRETEC attempt to represent interactions between the dominant processes that determine wildfire behavior such as convective and radiative heat transfer, aerodynamic drag and buoyant response of the atmosphere to heat released by the fire. Such models are not practical for operational faster-than-real-time fire prediction due to their computational and data requirements. However, their process-based model-development approach creates an opportunity to provide additional perspectives concerning aspects of fire behavior that have been observed in the field and in the laboratory, allow for sensitivity analysis that is impractical through observations and pose new hypotheses that can be tested experimentally. Specific examples of the use of FIRETEC in this fashion include:
1) investigation of the 3D fire/atmosphere interaction that dictates multiscale fireline dynamics;
2) the influence of vegetation heterogeneity and variability in wind fields on predictability of fire spread;
3) the interaction between ecosystem disturbances such as insect attacks and potential fire behavior; and
4) the effects of nonlocal topography.

Link to PDF flyer.

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