The role of helicity and fire–atmosphere turbulent energy transport in potential wildfire behaviour

Background Understanding near-surface fire–atmosphere interactions at turbulence scale is fundamental for predicting fire spread behaviour. Aims This study aims to investigate the interaction and accompanying energy transport processes within convective boundary layer. Methods Three groups of large eddy simulations representing common ranges layer conditions intensities were used examine how ambient buoyancy-induced atmospheric impacts region transport. Key results In a relatively weak layer, fire-induced buoyancy force could impose substantial changes cause an anticorrelation helicity between atmosphere flow. Fire-induced impact became much smaller in stronger environment, with flow maintaining coherent structures across heating region. A high-efficiency heat zone above line was found all cases. The work also counter-gradient zones both momentum cases group. Conclusions We conclude that can be affected by conditions. Implications Ambient behaviour through process. might indicate existence strong mixing processes.