计算物理 ›› 2014, Vol. 31 ›› Issue (4): 412-416.

• 研究论文 • 上一篇    下一篇

一种气体低温吸附模型与计算

薛社生, 李守先, 刘阳   

  1. 北京应用物理与计算数学研究所, 北京 100094
  • 收稿日期:2013-09-13 修回日期:2013-11-25 出版日期:2014-07-25 发布日期:2014-07-25
  • 作者简介:薛社生(1965-),男,博士,副研究员,从事计算流体力学研究,E-mail:xue_shesheng@iapcm.ac.cn
  • 基金资助:
    国家自然科学基金(11371067)资助项目

A Model of Single Delta Oxygen Cryosorption

XUE Shesheng, LI Shouxian, LIU Yang   

  1. Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
  • Received:2013-09-13 Revised:2013-11-25 Online:2014-07-25 Published:2014-07-25

摘要: 研究化学氧碘激光器中工作气体氧的低温吸附.考察气体流过沸石多孔床的压力与速度的关系,建立吸附剂吸收的物质量与气流中物质量关系的吸附平衡方程.由吸附物量较少的特点,得出在确定的压力梯度下速度近似为常数.吸附平衡方程与吸附速率方程,构成低温吸附模型方程,其中,亨利等温线方程作为辅助关系.对模型方程做数值求解,得到气流中单态氧浓度及吸收的单态氧浓度随时间变化的规律,及浓度分布的长时间渐近特征.

关键词: 吸附, 多孔介质, 化学氧碘激光, 数值计算

Abstract: Cryosorption of oxygen produced in chemical oxygen iodine laser(COIL) is considered. From the view point of mass conservation, a linear relation between gas pressure gradient and gas velocity is used with which gases flows through a zeolite porous bed is obtained. An adsorption balance equation, describing relation of components in gas flow and adsorped components,is established with adsorption dynamics equation. Henry relation is employed as isothermal equation. A set of cryosorption model equations is solved numerically. Oxygen concentration evolution,and long time character of concentrations are given.

Key words: cryosorption, porous material, COIL, numerical computation

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