中空纤维管随机分布时透析器内的管外传质

<P>ZHANG Xiaoguang; DING Weiping; ZHAO Gang; YANG Jiming; GAO Dayong</P>

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中空纤维管随机分布时透析器内的管外传质

更新时间：2025-12-10

- 中空纤维管随机分布时透析器内的管外传质
- CIESC Journal Issue 12, (2006)
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- Online First：25 December 2006，
  
  Published：25 December 2006
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ZHANG Xiaoguang, DING Weiping, ZHAO Gang, et al. 中空纤维管随机分布时透析器内的管外传质[J]. CIESC Journal, 2006, (12).
DOI：

ZHANG Xiaoguang, DING Weiping, ZHAO Gang, et al. 中空纤维管随机分布时透析器内的管外传质[J]. CIESC Journal, 2006, (12).
DOI：

摘要

利用Matlab软件计算了中空纤维透析器外壳内壁面(简称壁面)影响下，中空纤维随机分布、管外流场充分发展、纤维表面定质量流量时的管外流场分布，进而求得了不同填充密度下透析器的管外传质系数. 结果表明，中空纤维的排布方式对传质系数有很大的影响;在所研究的中空纤维填充密度范围内(10%～50%)，随着填充密度的增大，透析器的管外传质系数先变大，后变小;其随机性整体上逐渐减小.

Abstract

Mass transfer coefficient is one of the main parameters to evaluate the performance of hollow fiber modules.With the help of Matlab software

the shell-side flow field was simulated numerically under the condition of well-developed fluid flow.The theoretical model considers the effects of both the inner wall of the module shell and the random distribution of the hollow fibers on the shell-side mass transfer performance.For different packing densities of hollow fibers

the concentration field and the shell-side mass transfer coefficients of dialyzers were obtained with the concentration boundary condition of constant wall flux.The results showed that the packing/distribution of hollow fibers had a great effect on the shell-side mass transfer coefficient.Within the range of packing density studied (10%—50%)

when the packing density increased

the shell-side mass transfer coefficient firstly increased and then decreased

and its randomicity decreased in general.

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