Convective mass transfer : an introduction
Convective mass transfer : an introduction
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对流传质：简介
DOI：
10.1016/j.ijthermalsci.2013.08.004
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发表时间：
1963
影响因子：
4.5
通讯作者：
D. Spalding
中科院分区：
文献类型：
--
作者：
D. Spalding
本文提出了一种新的液滴蒸发模型，该模型根据液膜理论，考虑了气体对流的影响，并将热膜厚度和扩散膜厚度与气流雷诺数联系起来。该模型解决了径向坐标系中的物质，动量和能量守恒方程，占明确的气体密度对温度和蒸汽浓度的依赖性。该模型已在广泛的气体温度、雷诺数和液体种类下进行了测试，并将结果与科学文献中可用的实验数据以及经典扩展膜模型的预测进行了比较。本模型，连同解除一些物理不一致的经典模型，这在高气体温度下变得不可忽略，也表现出相当好的协议与实验数据为选定的操作条件。
A new model for drop evaporation has been developed, including the effect of gas convection according to the film theory, by relating the thermal and diffusional film thicknesses to the gas stream Reynolds number. The model solves the species, momentum and energy conservation equations in a radial coordinate system, accounting explicitly for the gas density dependence on temperature and vapour concentration. The model has been tested under a wide range of gas temperatures, Reynolds numbers and liquid species and the results have been compared against experimental data available in the scientific literature and with the predictions from the classical extended film model. The present model, together with relieving some of the physical inconsistencies of the classical models, which become not negligible at high gas temperature, also shows a rather good agreement with the experimental data for the selected operating conditions.