Multiphysics modelling of convective drying of food materials

Kumar, Chandan, Karim, Azharul, Saha, Suvash C., Joardder, Mohammad Uzzal Hossain, Brown, Richard J., & Biswas, Dipankar (2012) Multiphysics modelling of convective drying of food materials. In Proceedings of the Global Engineering, Science and Technology Conference, Global Institute of Science and Technology, Dhaka, Bangladesh.

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Currently, 1.3 billion tonnes of food is lost annually due to lack of proper processing and preservation method. Drying is one of the easiest and oldest methods of food processing which can contribute to reduce that huge losses, combat hunger and promote food security. Drying increase shelf life, reduce weight and volume of food thus minimize packing, storage, and transportation cost and enable storage of food under ambient environment. However, drying is a complex process which involves combination of heat and mass transfer and physical property change and shrinkage of the food material. Modelling of this process is essential to optimize the drying kinetics and improve energy efficiency of the process. Since material properties varies with moisture content, the models should not consider constant materials properties, constant diffusion .The objective of this paper is to develop a multiphysics based mathematical model to simulate coupled heat and mass transfer during convective drying of fruit considering variable material properties. This model can be used predict the temperature and moisture distribution inside the food during drying. Effect of different drying air temperature and drying air velocity on drying kinetics has been demonstrated. The governing equations of heat and mass transfer were solved with Comsol Multiphysics 4.3.

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ID Code: 56082
Item Type: Conference Paper
Refereed: Yes
Additional Information: All accepted abstract and full papers will be published in the refereed conference proceedings with ISBN and will be published electronically via a separate website, namely, Outstanding papers will be considered for World Review of Science and Technology.
Keywords: Drying, Modelling, Multyphysics, Heat and mass transfer, comsol
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CHEMICAL ENGINEERING (090400) > Process Control and Simulation (090407)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > FOOD SCIENCES (090800) > Food Engineering (090802)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > FOOD SCIENCES (090800) > Food Processing (090805)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Numerical Modelling and Mechanical Characterisation (091307)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2012 please consult the authors
Deposited On: 14 Jan 2013 01:01
Last Modified: 17 Jan 2013 05:14

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