ISSN:
0308-0501
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Architecture, Civil Engineering, Surveying
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Forest fires involve a wide range of unknown variables, e.g. wind flow over complex terrain, atmospheric stability, vegetation burning characteristics, location and fuel type, etc. The main objective of the present work is to incorporate the Rothermel simplified combustible model into a 3D unsteady flow solver appropriated for convective atmospheric flows over complex terrain. The released combustion energy is taken into account in the enthalpy equation. The unsteady byouant plume strongly influences the local wind speed direction and magnitude. A speical interactive coupling procedure was developed that links the calculated location of fire front and fire energy release to the momentum and energy transport for each time step. The general computer algorithm includes several other features such as the effect-drag of trees on the momentum transport and the consequent modifications in the k and ε turbulence model employed. The results include the prediction of fire development in flat terrain and in a valley and over hills covered by vegetation. A parametric study was conducted to detect the influence of wind speed, vegetation and fuel content on burning area, burning speed and wind speed direction.
Additional Material:
9 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/fam.810190605
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