Computational fluid dynamics of industrial batch dryers of fruits

被引：5

作者：

Kiranoudis, CT ^{[1
]}

Karathanos, VT

Markatos, NC

机构：

[1] Natl Tech Univ Athens, Dept Chem Engn, GR-15780 Athens, Greece

[2] Natl Ctr Sci Res, Lab Solar & Other Energy Syst, GR-15310 Athens, Greece

来源：

DRYING TECHNOLOGY | 1999年 / 17卷 / 1-2期

关键词：

computational fluid dynamics; modeling; batch dryers; simulation; numerical methods;

D O I：

10.1080/07373939908917516

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

An industrial batch-type, tray air dryer constructed for drying of several fruits, was investigated. Momentum, heat and mass transfer regarding both gaseous and solid phases was simulated using computational fluid dynamics. A mathematical model of the dryer for predicting the turbulent, three-dimensional transfer phenomena inside the industrial batch dryer equipment was developed and analyzed. The model consists of the full set of partial differential equations that describe the conservation of mass, momentum and heat inside the dryer. The standard k-epsilon model was used to describe turbulence in addition to the governing conservation equations. The simulated profiles of flow field, temperature and humidity of the air phase revealed a lack of spatial homogeneity of air conditions above the product. The situation was found to greatly influence the distribution of material moisture content of the dried product for the various stages of drying. The investigation was carried out for the representative case of sultana raisins. Copyright (C) 1999 by Marcel Dekker, Inc.

引用

页码：1 / 25

页数：25

共 20 条

[1]

ADAMS RL, 1985, T ASAE, V28, P890

[2] MODELING AND OPTIMIZATION OF A DRYER [J].

BERTIN, R ;

BLAZQUEZ, M .

DRYING TECHNOLOGY, 1986, 4 (01) :45-66

[3]

GALEA ER, 1987, APPL MATH MODEL, V11, P161

[4] FLOW, HEAT-TRANSFER AND PARTICLE DRYING CHARACTERISTICS IN CONFINED OPPOSING TURBULENT JETS - A NUMERICAL STUDY [J].

HOSSEINALIPOUR, SM ;

MUJUMDAR, AS .

DRYING TECHNOLOGY, 1995, 13 (03) :753-781

[5] PREDICTION OF LAMINARIZATION WITH A 2-EQUATION MODEL OF TURBULENCE [J].

JONES, WP ;

LAUNDER, BE .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1972, 15 (02) :301-+

[6]

KHANKARI KK, 1997, P ASAE ANN M MINN MI

[7]

KIEVIET FG, DRYING TECHNOLOGY, V15, P1763

[8] Design of tray dryers for food dehydration [J].

Kiranoudis, CT ;

Maroulis, ZB ;

MarinosKouris, D ;

Tsamparlis, M .

JOURNAL OF FOOD ENGINEERING, 1997, 32 (03) :269-291

[9] Design of batch grape dryers [J].

Kiranoudis, CT .

DRYING TECHNOLOGY, 1998, 16 (1-2) :141-162

[10] Modeling and optimization of a tunnel grape dryer [J].

Kiranoudis, CT ;

Maroulis, ZB ;

MarinosKouris, D ;

Tsamparlis, M .

DRYING TECHNOLOGY, 1996, 14 (7-8) :1695-1718

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