关键词: 油罐, 火灾, 传热, 温度剖面

Abstract: An analysis is made on the water－layer temperature response of on－fire oil tanks during their initial period,based on a simplified mathematical model established in this paper.Both the analytical and the numerical results are presented for various conditions under which the fires take place.The results show that there exists a boilover premonition period during which the water－layer temperature becomes relatively slow.Based on this findins the boilver premonition period is defined and its analytical expression is provided which may be used as a starting point for handling the experimental data.It is also shown that the combustion rate is the most important parameter in determining the boilver premonition period,while the surface cooling of the on－fire oil tanks has little effects for retarding their boilovers.

Key words: oil tank, fire, heat transfer, temperature profile