| 球形吸附剂颗粒扩散方程的数值求解 |
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| 引用本文： | 崔红社,刘玉英,王敏.球形吸附剂颗粒扩散方程的数值求解[J].青岛建筑工程学院学报,2005,26(4):44-48. |
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| 作者姓名： | 崔红社 刘玉英 王敏 |
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| 作者单位： | [1]青岛理工大学环境与市政工程学院,青岛266033 [2]青岛市排水管理处,青岛266071 [3]青岛全统旅游育乐有限公司,青岛266071 |
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| 摘 要： | 对于速率控制的变压吸附过程而言，吸附剂颗粒上的扩散方程求解十分关键．采用有限差分法数值求解扩散方程，分别利用等距网格和等体积网格划分计算区域．结果表明，当网格节点数较少时，等体积网格比等距网格具有更高的计算精度．当球形计算区域网格节点足够密时，节点在计算区域的分布对计算结果影响小大，从而等距网格和等体积网格都可以达到较高的计算精度．
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| 关 键 词： | 扩散方程 计算误差 等距网格 等体积网格 吸附剂颗粒 |
| 收稿时间： | 2004-10-13 |
Numerical Solution of Diffusion Equation of Spherical Particle of Absorbent |
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| Cui GongShe;Liu YuYing;Wang Min.Numerical Solution of Diffusion Equation of Spherical Particle of Absorbent[J].Journal of Qingdao Institute of Architecture and Engineering,2005,26(4):44-48. |
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| Authors: | Cui GongShe;Liu YuYing;Wang Min |
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| Abstract: | For the pressure swing absorption processes of rate controlling, the solution of diffusion equations in spherical particles is of great importance. In this paper, the finite difference method is used to solve the diffusion equation and the spherical particle is discretized with iso-spacing grids and iso-volumetric grids respectively. The results show that, when the number of grid in numerical region is fewer, the numerical precision in iso-volumetric grid is higher than that in iso-spacing grid. But when the number of grids is more sufficient, both can reach higher numerical precision. |
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| Keywords: | diffusion equation numerical error iso-spacing grid iso-volumetric grid particle of adsorbent |
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