Flame spreading over a hydrocarbon fuel has been investigated for liquid fuels such as kerosene and diesel, using thermocouple and flame barrier. Without a forced convection, it was clear that the flame spreading was mainly controlled by the liquid surface flow, and the radiative heat transfer was dominant over an conductive heat transfer in kerosene, but in diesel, the latter was found to be influential over the former. When the direction of windflow was the same as flame spreading, it was primarily controlled through the convective and radiative heat transfer. The oscillation period and amplitude of the flame spreading velocity increase if the the wind flow is directed in the same way as flame spreading velocity, and decrease with opposite direction of wind flow.
