Abstract In order to assess the potential hazard of oil and oil product spills, it is necessary to accurately determine the evaporation rate from the multi-component spill surface. In this paper, a multi-component pool evaporation model has been built and applied to the gasoline spill. The computational procedure has been implemented in the ANSYS Fluent code 18.0 through user-defined functions (UDFs). Gasoline is represented as a mixture consisting of a fixed number of individual components, and pseudo components (narrow boiling fractions). The model has been validated against the experimental data obtained in this study. The sensitivity analysis has been performed to assess the influence of wind velocity, pool thickness, and bund walls on the pool evaporation, the mass of vapour within the flammability limits, and the size of the flammable cloud for hypothetical gasoline spills.

中文翻译：

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汽油池可燃蒸气云形成的数值分析

摘要 为了评估石油和油品泄漏的潜在危害，需要准确确定多组分泄漏表面的蒸发速率。在本文中，建立了多组分池蒸发模型并将其应用于汽油泄漏。计算过程已通过用户定义函数 (UDF) 在 ANSYS Fluent 代码 18.0 中实现。汽油被表示为由固定数量的单个组分和假组分（窄沸点馏分）组成的混合物。该模型已针对本研究中获得的实验数据进行了验证。进行了敏感性分析以评估风速、水池厚度和堤壁对水池蒸发、可燃极限内的蒸汽质量的影响，