CFD modelling of natural convection heat and mass transfer in hygroscopic porous media

被引：10

作者：

Prakash, M

Turan, ÖF

Li, Y

Thorpe, GR

机构：

[1] Victoria Univ, Sch Built Environm, Melbourne, Vic 8001, Australia

[2] CSIRO Bldg Construct & Engn, Adv Thermofluids Technol Lab, Highett, Vic 3190, Australia

来源：

DRYING TECHNOLOGY | 2000年 / 18卷 / 10期

关键词：

low permeability porous media; moisture migration; numerical simulations; stored agricultural produce; turbulence; turbulent natural convection;

D O I：

10.1080/07373930008917837

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This paper presents the derivation of a model to predict heat and mass transfer in a system consisting of a turbulently flowing fluid overlying a saturated hygroscopic porous medium. Comparisons with experimental and numerical simulations have been carried out to check the accuracy of components of the model. Finally, a case study using silica gel as a representative hygroscopic porous medium is presented as an application of the model. It is shown that moisture is convected from the warm interior of a bulk of porous medium to the relatively cool periphery. This result has profound practical implications when the hygroscopic medium is stored agricultural produce as the region of high moisture content may become moldy.

引用

页码：2175 / 2201

页数：27

共 50 条

[1] Heat and Mass Transfer Along of a Vertical Wall by Natural convection in Porous Media
Aouachria, Z.
[J]. FDMP-FLUID DYNAMICS & MATERIALS PROCESSING, 2009, 5 (02): : 137 - 147
[2] Heat transfer and natural convection of nanofluids in porous media
Bourantas, G. C.
Skouras, E. D.
Loukopoulos, V. C.
Burganos, V. N.
[J]. EUROPEAN JOURNAL OF MECHANICS B-FLUIDS, 2014, 43 : 45 - 56
[3] FREE CONVECTION HEAT OR MASS TRANSFER IN POROUS MEDIA
TAUNTON, JW
LIGHTFOOT, EN
[J]. CHEMICAL ENGINEERING SCIENCE, 1970, 25 (12) : 1939 - +
[4] Transient heat and mass transfer by natural convection from vertical surfaces in porous media
Cheng, CY
[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2000, 33 (12) : 1425 - 1430
[5] Simultaneous heat and mass transfer by natural convection from a cone and a wedge in porous media
Chamkha, AJ
Khaled, ARA
Al-Hawaj, O
[J]. JOURNAL OF POROUS MEDIA, 2000, 3 (02) : 155 - 164
[6] Natural convection fluid flow and heat transfer in porous media
Baez, Elsa
Nicolas, Alfredo
[J]. JOURNAL OF MECHANICS OF MATERIALS AND STRUCTURES, 2007, 2 (08) : 1571 - 1584
[7] Integral treatment of coupled heat and mass transfer by natural convection from a cylinder in porous media
Singh, B. B.
Chandarki, I. M.
[J]. INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2009, 36 (03) : 269 - 273
[8] An integral treatment for heat and mass transfer along a vertical wall by natural convection in a porous media
Singh, B. B.
[J]. Computational Methods in Multiphase Flow IV, 2007, 56 : 143 - 151
[9] Study on heat and mass transfer with sublimation drying in non-hygroscopic porous media
Liu, YZ
Guo, YY
Chen, B
Liang, Y
[J]. CRYOGENICS AND REFRIGERATION - PROCEEDINGS OF ICCR 98, 1998, : 353 - 356
[10] Hydromagnetic coupled heat and mass transfer by natural convection from a permeable constant heat flux surface in porous media
Chamkha, AJ
Khaled, ARA
[J]. JOURNAL OF POROUS MEDIA, 2000, 3 (03) : 259 - 266

← 1 2 3 4 5 →