| Simulation of Vapor Flows Between Two Closed Surfaces of Evaporation and Condensation at High Vacuum |
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| 作者姓名： | 张旭斌 许春建 周明 |
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| 作者单位： | ChemicalEngineeringResearchCenter,TianjinUniversity,Tianjin300072,China |
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| 基金项目： | NationalNaturalScienceFoundationofChina(No2 0 1 360 1 0 ) |
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| 摘 要： | The steady multi-component vapor flows between two closed surfaces of evaporation and condensation are investigated numerically by the nonlinear Bhatnagar-Gross-Krook equation.The mathematical model will make it possible to determine the profiles of the process variables between two surfaces of evaporation and condensation if the conditions of evaporation and condensation surfaces are taken into consideration.It is used to simulate the vapor behaviors of the pure dibutylphthalate and the ethylhexyl phthalate-ethylhexyl sebacate mixture.The effects of the liquid composition of the evaporaton surface,the evaporation temperature ,the condensation temperature and the distance between evaporation and condensation surfaces on the evaporation efficiency and separation factor are discussed.
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| 关 键 词： | 蒸汽流 稀疏气体 高真空 密闭表面 蒸发 浓缩 数字仿真 非线性BGK方程 |
Simulation of Vapor Flows Between Two Closed Surfaces of Evaporation and Condensation at High Vacuum |
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| ZHANG Xu bin,XU Chun jian.Simulation of Vapor Flows Between Two Closed Surfaces of Evaporation and Condensation at High Vacuum[J].Transactions of Tianjin University,2003,9(2):101-108. |
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| Authors: | ZHANG Xu bin XU Chun jian |
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| Abstract: | The steady multi component vapor flows between two closed surfaces of evaporation and condensation are investigated numerically by the nonlinear Bhatnagar Gross Krook equation. The mathematical model will make it possible to determine the profiles of the process variables between two surfaces of evaporation and condensation if the conditions of evaporation and condensation surfaces are taken into consideration. It is used to simulate the vapor behaviors of the pure dibutylphthalate and the ethylhexyl phthalate ethylhexyl sebacate mixture. The effects of the liquid composition of the evaporation surface, the evaporation temperature, the condensation temperature and the distance between evaporation and condensation surfaces on the evaporation efficiency and separation factor are discussed. |
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| Keywords: | Bhatnagar Gross Krook equation numerical simulation rarefied gas separation |
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