A variable diffusivity model for the drying of spherical food particulates

Article

Walker, Lauren and Senadeera, Wijitha. 2014. "A variable diffusivity model for the drying of spherical food particulates." Applied Mechanics and Materials. 553, pp. 94-99. https://doi.org/10.4028/www.scientific.net/AMM.553.94
Article Title

A variable diffusivity model for the drying of spherical food particulates

ERA Journal ID124777
Article CategoryArticle
AuthorsWalker, Lauren (Author) and Senadeera, Wijitha (Author)
Journal TitleApplied Mechanics and Materials
Journal Citation553, pp. 94-99
Number of Pages6
Year2014
PublisherTrans Tech Publications
Place of PublicationSwitzerland
ISSN1660-9336
1662-7482
1662-7490
Digital Object Identifier (DOI)https://doi.org/10.4028/www.scientific.net/AMM.553.94
Web Address (URL)https://www.scientific.net/AMM.553.94
Abstract

An investigation of the drying of spherical food particles was performed, using peas as the model material. In the development of a mathematical model for drying curves, moisture diffusion was modelled using Fick’s second law for mass transfer. The resulting partial differential equation was solved using a forward-time central-space finite difference approximation, with the assumption of variable effective diffusivity. In order to test the model, experimental data was collected for the drying of green peas in a fluidised bed at three drying temperatures. Through fitting three equation types for effective diffusivity to the data, it was found that a linear equation form, in which diffusivity increased with decreasing moisture content, was most appropriate. The final model accurately described the drying curves of the three experimental temperatures, with an R2 value greater than 98.6% for all temperatures.

Keywordsdrying, food, peas, spherical, effective diffusivity, finite difference, mathematical model
ANZSRC Field of Research 2020400405. Food engineering
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Byline AffiliationsQueensland University of Technology
Institution of OriginUniversity of Southern Queensland
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Alves-Filho, O., Senadeera, W. and Eikevik, T.. 2013. "Drying condition effects on fluidization quality and fluidization velocity at initial and final stages of cubical particulates for pet food." Goncharova-Alves, S., Alves-Filho, O. and Eikevik, T. M. (ed.) 6th Nordic Drying Conference (NDC2013). Copenhagen, Denmark 05 - 07 Jun 2013 Copenhagen, Denmark.
Application of meshfree methods to numerically simulate microscale deformations of different plant food materials during drying
Karunasena, H. C. P., Brown, R. J., Gu, Y. T. and Senadeera, W.. 2015. "Application of meshfree methods to numerically simulate microscale deformations of different plant food materials during drying." Journal of Food Engineering. 146, pp. 209-226. https://doi.org/10.1016/j.jfoodeng.2014.09.011
The use of artificial neural networks for identifying sustainable biodiesel feedstocks
Jahirul, Mohammed I., Brown, Richard J., Senadeera, Wijitha, O'Hara, Ian M. and Ristovski, Zoran D.. 2013. "The use of artificial neural networks for identifying sustainable biodiesel feedstocks." Energies. 6 (8), pp. 3764-3806. https://doi.org/10.3390/en6083764
Scanning electron microscopic study of microstructure of gala apples during hot air drying
Karunasena, H. C. P., Hesami, P., Senadeera, W., Gu, Y. T., Brown, R. J. and Oloyede, A.. 2014. "Scanning electron microscopic study of microstructure of gala apples during hot air drying." Drying Technology: an international journal. 32 (4), pp. 455-468. https://doi.org/10.1080/07373937.2013.837479
Numerical investigation of case hardening of plant tissue during drying and its influence on the cellular-level shrinkage
Karunasena, H. C. P., Gu, Y.T., Brown, R. J. and Senadeera, W.. 2015. "Numerical investigation of case hardening of plant tissue during drying and its influence on the cellular-level shrinkage." Drying Technology: an international journal. 33 (6), pp. 713-734. https://doi.org/10.1080/07373937.2014.982759
Biodiesel production from non-edible beauty leaf (Calophyllum inophyllum) oil: process pptimization using response surface methodology (RSM)
Jahirul, Mohammad I., Koh, Wenyong, Brown, Richard J., Senadeera, Wijitha, O'Hara, Ian and Moghaddam, Lalehvash. 2014. "Biodiesel production from non-edible beauty leaf (Calophyllum inophyllum) oil: process pptimization using response surface methodology (RSM)." Energies. 7 (8), pp. 5317-5331. https://doi.org/10.3390/en7085317
Numerical Modeling of Morphological Changes of Food Plant Materials during Drying
Karunasena, H. C. P. and Senadeera Wijitha. 2017. "Numerical Modeling of Morphological Changes of Food Plant Materials during Drying ." Zhang, Min, Bhandari, Bhesh and Fang, Zhongxiang (ed.) Handbook of Drying of Vegetables and Vegetable Products. United Kingdom. CRC Press. pp. 387-427
The Drying Constant and its Effect on the Shrinkage Constant of Different-Shaped Food Particulates
Senadeera, Wijitha. 2008. "The Drying Constant and its Effect on the Shrinkage Constant of Different-Shaped Food Particulates." International Journal of Food Engineering. 4 (8). https://doi.org/10.2202/1556-3758.1219
Drying constant and shrinkage constant relations of different shaped food particulates: empirical models
Senadeera, W.. 2008. "Drying constant and shrinkage constant relations of different shaped food particulates: empirical models." Thorat, B. N. and Mujumdar, A. S. (ed.) 16th International Drying Symposium (IDS 2008). Hyderabad, India 09 - 12 Nov 2008 https://doi.org/10.1080/07373930903221812
Fluidization characteristics of moist food particles
Senadeera, Wijitha, Wijesinghe, Bandu, Young, Gordon and Bhandari, Bhesh. 2006. "Fluidization characteristics of moist food particles." International Journal of Food Engineering. 2 (1), pp. 1-13. https://doi.org/10.2202/1556-3758.1047
Modeling dimensional shrinkage of shaped foods in fluidized bed drying
Senadeera, Wijitha, Bhandari, Bhesh R., Young, Gordon and Wijesinghe, Bandu. 2005. "Modeling dimensional shrinkage of shaped foods in fluidized bed drying." Journal of Food Processing and Preservation. 29 (2), pp. 109-119. https://doi.org/10.1111/j.1745-4549.2005.00017.x
Influence of shapes of selected vegetable materials on drying kinetics during fluidized bed drying
Senadeera, Wijitha, Bhandari, Bhesh R., Young, Gordon and Wijesinghe, Bandu. 2003. "Influence of shapes of selected vegetable materials on drying kinetics during fluidized bed drying." Journal of Food Engineering. 58 (3), pp. 277-283. https://doi.org/10.1016/S0260-8774(02)00386-2
Methods for effective fluidization of particulate food materials
Senadeera, Wijitha, Bhandari, Bhesh R., Young, Gordon and Wijesinghe, Bandu. 2000. "Methods for effective fluidization of particulate food materials." Drying Technology: an international journal. 18 (7), pp. 1537-1557. https://doi.org/10.1080/07373930008917792
Physical properties and fluidization behaviour of fresh green bean particulates during fluidized bed drying
Senadeera, W., Bhandari, B., Young, G. and Wijesinghe, B.. 2000. "Physical properties and fluidization behaviour of fresh green bean particulates during fluidized bed drying." Food and Bioproducts Processing. 78 (C1), pp. 43-47. https://doi.org/10.1205/096030800532707