Numerical investigation of fast precooling of a cylindrical food product based on the hyperbolic heat conduction model
International Journal of Numerical Methods for Heat & Fluid Flow
ISSN: 0961-5539
Article publication date: 2 August 2013
Abstract
Purpose
In this study, the purpose was to introduce two‐dimensional hyperbolic heat conduction equations in order to simulate the fast precooling process of a cylindrically shaped food product with internal heat generation. A modified model for internal heat generation due to respiration in the food product was proposed to take the effect of relaxation time into account. The obtained governing equations were solved numerically using an efficient finite difference technique. The influence of Biot number and heat generation parameters on thermal characteristics was examined and discussed. The results based on hyperbolic model were compared with the classical parabolic heat diffusion model. The present numerical code was validated via comparison with analytical solution and a good agreement was found.
Design/methodology/approach
The obtained governing equations were solved numerically using an efficient finite difference technique.
Findings
The influence of Biot number and heat generation parameters on thermal characteristics was examined and discussed. The results based on hyperbolic model were compared with the classical parabolic heat diffusion model. The present numerical code was validated via comparison with analytical solution and a good agreement was found.
Originality/value
Two‐dimensional analysis of fast precooling of cylindrical food product based on hyperbolic heat conduction model has not been investigated yet.
Keywords
Citation
Al‐Odat, M.Q. (2013), "Numerical investigation of fast precooling of a cylindrical food product based on the hyperbolic heat conduction model", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 23 No. 6, pp. 960-978. https://doi.org/10.1108/HFF-05-2011-0112
Publisher
:Emerald Group Publishing Limited
Copyright © 2013, Emerald Group Publishing Limited