| 摘要: |
| 简要回顾了固体物质在干燥过程中湿分迁移的理论及这一理论的发展历程；介绍了固体物质中湿分传递的主要理论和模型，包括传统的连续介质假设模型和为了克服它们在描述微观结构特性上的不足而创立的应用于多孔介质的体积平均理论；还介绍了近10余年来干燥理论研究的趋势，特别是在利用相邻学科的成果应用于揭示湿分在固体物质内部迁移的微观原因方面所做的努力，其中包括孔道网络模型和多尺度方法，以及分形理论在多孔介质干燥中，内部水分迁移过程的应用前景。关键词固体；湿分；传递理论；孔道网络；分形；多尺度中图分类号TQ028．6文章编号1007—4333（2005）04—0081—12文献标识码A |
| 关键词: 固体 湿分 传递理论 孔道网络 分形 多尺度 |
| DOI：10.11841/j.issn.1007-4333.2005.04.105 |
| 投稿时间：2004-09-22 |
| 基金项目: |
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| Review and vista on drying theories of porous medium |
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| Abstract: |
| The theories of moisture transfer inside a wet solid during a drying process, which were deduced base on the hypothesis of a continuous porous body, were reviewed. The hypotheses of their transformation mechanisms, the mathematical models, the merits and limitations, and the applications of these theories were summarized. Besides, some new and possible study trends on drying theory in the last decade and the near future, especially those obtained and to be obtained by applying the outcomes from other correlative fields, e.g. the pore network model, the multi-scale method and the fractal geometry, were anticipated for a deeper investigation into the micro mechanisms of inner transfer phenomena in solid. |
| Key words: solid moisture transfer theory pore network fractal multi-scale |
