2D MODELING OF DRYING OF POROUS-MEDIA - INFLUENCE OF EDGE EFFECTS AT THE INTERFACE

被引：23

作者：

PRAT, M

机构：

[1] Institut de Mécanique des Fluides, 31400, Toulouse, avenue du Professeur Camille Soula

来源：

DRYING TECHNOLOGY | 1991年 / 9卷 / 05期

关键词：

INTERFACIAL COEFFICIENT; MOISTURE CONTENT HETEROGENEITIES; CAPILLARY POROUS MEDIA; 2D SIMULATION;

D O I：

10.1080/07373939108916748

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This paper is essentially devoted to the study of the interfacial coefficient problem and to a characterization of the falling rate period. By means of a 2D numerical simulation, it is shown that the falling rate period is characterized by strong humidity heterogeneities at the interface. These heterogeneities affect significantly the interfacial mass transfer coefficient to be used in the traditional 1D approach of drying. In this paper, the heterogeneities are due to the coupling between external and internal transfer in a boundary layer flow leading edge region. Other phenomena that may also cause the occurrence of humidity heterogeneities at the interface are discussed.

引用

页码：1181 / 1208

页数：28

共 22 条

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