Two Approaches to Mathematical Modelling of Heating/Evaporation of a Multi-component Liquid Film
Two Approaches to Mathematical Modelling of Heating/Evaporation of a Multi-component Liquid Film
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DOI：
10.11159/icffts20.130
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发表时间：
2020-09
期刊：
影响因子：
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通讯作者：
S. Sazhin;M. Jia;Yanzhi Zhang;O. Rybdylova
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文献类型：
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作者：
S. Sazhin;M. Jia;Yanzhi Zhang;O. Rybdylova
-比较了模拟多组分液膜加热/蒸发的两种数值算法。这两种算法都是基于描述液膜过程的一维传热/物质扩散方程的解。其中一种算法是基于这些方程的全数值解，而另一种算法是基于它们在每个时间步长的解析解。对典型柴油机工况下50%/50%十六烷/庚烷膜的预测结果进行了比较。两种算法预测的厚度随时间的变化与膜的表面/平均温度之间的一致性似乎相当接近。这使我们能够为实际工程应用推荐这两种算法。
- Two numerical algorithms for modelling multi-component liquid film heating/evaporation are compared. Both algorithms are based on the solutions of one-dimensional heat transfer/species diffusion equations describing the processes in the liquid film. One of these algorithms is based on the fully numerical solutions of these equations, while the second one is based on their analytical solutions at each time step. The predictions of both algorithms are compared for the case of a 50%/50% hexadecane/heptane film under typical Diesel engine conditions. The agreement between the time evolution of thickness and surface/average temperatures of the film, predicted by both algorithms, appears to be rather close. This allows us to recommend both algorithms for practical engineering applications.