Computational fluid dynamics modelling and validation of the isothermal airflow in a forced convection oven

被引:59
|
作者
Verboven, P [1 ]
Scheerlinck, N [1 ]
De Baerdemaeker, J [1 ]
Nicolai, BM [1 ]
机构
[1] Katholieke Univ Leuven, Dept Agroengn & Econ, B-3001 Heverlee, Belgium
关键词
D O I
10.1016/S0260-8774(99)00131-4
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
This article discusses the application of computational fluid dynamics (CFD) to calculate the three-dimensional isothermal airflow in an industrial electrical forced-convection oven. The governing fluid flow equations were expanded with a fan model and a turbulence model. The standard and the renormalisation group (RNG) version of the k-epsilon turbulence model produced comparable results. The performance of the CFD model was assessed by means of point measurements of the velocity with a directionally calibrated hot-film velocity sensor. From the validation it was found that important aspects of the model are the fan head-capacity relationship, the fan swirl and the oven geometry. The calculation error was on an average 22% of the actual velocity, caused by the limitations in turbulence modelling and numerical grid density. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:41 / 53
页数:13
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