TRANSIENT NATURAL DRYING-INDUCED BOUNDARY LAYERS
作者:
WANYRROMERO FERREIRA,
MAURI FORTES,
期刊:
Drying Technology
(Taylor Available online 2000)
卷期:
Volume 18,
issue 1-2
页码: 49-65
ISSN:0737-3937
年代: 2000
DOI:10.1080/07373930008917692
出版商: Taylor & Francis Group
关键词: Natural convection;numerical simulation;heat and mass transfer coefficients
数据来源: Taylor
摘要:
This work presents a methodology far obtaining heat and mass transfer coefficients for problems involving natural convection along a flat plate. In order to simulate drying conditions, a set of data has been obtained for the temperature range between 20 and 98° C and for various absolute humidities, both of the wall and ambient. It is shown that for drying at temperatures above 80° C, Nusselt and Sherwood numbers change very appreciably with respect to values obtained at smaller temperatures. The simulated results show that even for very low temperature differences, the transient period in natural convection along a flal vertical plate is smaller than 3s.
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