Abstract
ABSTRACT This study investigates the combustion mechanisms of a floating hydrocarbon fuel layer with immersed heat conductors on a turbulent water surface. A mass burning rate model is developed using a variable B-number that accounts for heat transfer pathways and the modified latent heat of gasification, which improves the characterization of the B-number for the accuracy of burning rate prediction. Experiments are conducted in a bench-scale turbulent water tank, revealing significant relationships between combustion behavior and parameters such as fuel type, fuel layer thickness, turbulence intensity, and conductor immersion depth. Quantitative analyses are performed on the convective and radiative heating of the flame, the conductive and radiative feedback from the rod, radiative losses from the burning pool surface, and the heat losses at the fuel/water interface. The modified heat of vaporization for heptane ranges from 346.7–488.4 kJ/kg, compared to 974.7–1257.3 kJ/kg for dodecane. The heat transfer from the rod to the fuel layer is sensitive to turbulence intensity, showing a 26% and 38% reduction with rod immersion as u′ increases from 1.7 to 3.3 cm/s. The mass burning model has R 2 equal to 82.5%. A parametric study further evaluates the burning enhancement effects of immersed rods.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call