TY  - JOUR
PY  - 2021//
TI  - On the non-monotonic behaviour of fire spread
JO  - International journal of wildland fire
A1  - Viegas, Domingos Xavier Filomeno Carlos
A1  - Raposo, Jorge Rafael Nogueira
A1  - Ribeiro, Carlos Fernando Morgado
A1  - Reis, Luís Carlos Duarte
A1  - Abouali, Abdelrahman
A1  - Viegas, Carlos Xavier Pais
A1  - Viegas, Domingos Xavier Filomeno Carlos
A1  - Raposo, Jorge Rafael Nogueira
A1  - Ribeiro, Carlos Fernando Morgado
A1  - Reis, Luís Carlos Duarte
A1  - Abouali, Abdelrahman
A1  - Viegas, Carlos Xavier Pais
SP  - 702
EP  - 719
VL  - 30
IS  - 9
N2  - A conceptual model based on the dynamic interaction between fire, the fuel bed and the surrounding flow to explain the non-monotonic or intermittent behaviour of fires is proposed. According to the model, even in nominally permanent and uniform boundary conditions, the fire-induced flow modifies the geometry of the flame and its rate of spread. After an initial acceleration, there is a reduction in the rate of spread followed by one or more cycles of growth. Carefully controlled experiments of fires in slopes and canyons show that the evolution of fire properties, namely flame angle and rate of spread, have high-frequency oscillations superimposed on the low-frequency fire growth cycle described above.<p />  <p>Language: en</p>
LA  - en
SN  - 1049-8001
UR  - http://dx.doi.org/10.1071/WF21016
ID  - ref1
ER  -