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采用悬滴法对普通煤油和航空煤油两种液体燃料的单液滴在高温相对静止及强迫对流环境下的蒸发规律进行了实验研究,得到70余组有效实验数据.在本文条件下,对流可促进燃料液滴的蒸发,且对流速度越大,液滴蒸发速率越大;对流环境下普通煤油和航空煤油的蒸发规律存在差异,且同等条件下普通煤油的蒸发速率大于航空煤油.传统“折膜”理论蒸发模型与实验结果相比存在一定偏差;综合相对静止及对流环境的厚交换层蒸发规律研究,提出新的规律,并用实验结果检验.
The hanging drop method was used to study the evaporation law of single liquid droplets of common kerosene and aviation kerosene under relatively static and forced convection at high temperature, and more than 70 groups of effective experimental data were obtained. Under the condition of this paper, convection The vaporization rate of common kerosene and aviation kerosene under convection is different, and the evaporation rate of common kerosene is higher than that of aviation kerosene under the same conditions.Traditional " The experimental results show that there is a certain deviation between the theoretical model and the experimental results. Based on the study of the evaporation law of thick exchange layer in relative static and convection environments, a new law is proposed and verified by experimental results.