| 多组分传质过程的Maxwell-Stefan方法模拟 |
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| 引用本文： | 谷伟,张虎,李增耀,陶文铨. 多组分传质过程的Maxwell-Stefan方法模拟[J]. 工程热物理学报, 2012, 0(4): 681-684 |
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| 作者姓名： | 谷伟 张虎 李增耀 陶文铨 |
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| 作者单位： | 热流科学与工程教育部重点实验室,西安交通大学能源与动力工程学院 |
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| 基金项目： | 国家自然科学基金资助项目(No.51136004) |
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| 摘 要： | 为定量研究多组分系统在多孔介质内传质过程中组分之间的交互作用现象,本文基于Maxwell-Stefan模型对CH4/Ar/H2混合气体在单个直孔道内的纯扩散过程和C2H6/C3H8/N2混合气体在活性炭上的吸附扩散过程进行了模拟,定量地描述和分析了多组分系统中组分之间在传质过程中的交互作用。研究表明:对于扩散过程,组分之间的交互作用表现为大分子对小分子的拖带;对于吸附过程,这种作用表现为强吸附质能够替代已被吸附在吸附剂表面的弱吸附质;主体扩散为主要的传质形式。
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| 关 键 词： | 多组分系统 传质过程 Maxwell-Stefan模型 多孔介质 |
The Simulation of Mass Transfer Processes of Multi-Component Systems by Maxwell-Stefan Model |
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| U Wei,G Hu,I Zeng-Yao,AO Wen-Quan. The Simulation of Mass Transfer Processes of Multi-Component Systems by Maxwell-Stefan Model[J]. Journal of Engineering Thermophysics, 2012, 0(4): 681-684 |
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| Authors: | U Wei G Hu I Zeng-Yao AO Wen-Quan |
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| Affiliation: | (Key Laboratory of Thermo-Fluid Science and Engineering of MOE,Xi’an Jiaotong University,Xi’an 710049,China) |
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| Abstract: | To quantitatively study the interaction between each species of multi-component system during mass transfer in porous media,the Maxwell-Stefan model is used to simulate the pure diffusion process of CH4/Ar/H2mixture gas in a single straight channel and the absorption process of C2H6/C3H8/N2 mixture gas in the active carbon.The interaction between each species is described and analyzed quantitatively.The results show that:for diffusion process,the interaction among species is caused by dragging effect of heavy species on light one;for absorption process,the interaction arises from the displacement of weak adsorbate by strong one;and the mass transfer process is dominated by bulk diffusion. |
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| Keywords: | multi-component system mass transfer process Maxwell-Stefan model porous medium |
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