Spread behavior of spill fire under lateral wind and temperature distribution of PE sandwich panels on facade

This study examines the spreading behavior of window spill fire under the action of lateral wind and its influence on the temperature distribution of polyethylene sandwich panels on the outer surface of buildings. Twelve working conditions were set up based on different opening sizes and wind speeds. Under the action of lateral wind, with a constant opening size, this study has found greater wind speed, lower average flame height, and longer horizontal flame propagation length. This study is based on the feature-length. The facade flame height model without wind was developed, and the average flame height model under extreme conditions was established based on the speculation of a lateral wind Froude number. In addition, under constant opening size, the peak surface temperature of the PE sandwich panel is the highest when the wind speed is 1 m/s. These conclusions are of great significance for fire studies.