American Journal of Applied Sciences

Finite Difference Solution for Precooling Process of Fish Packages

K. A. Abbas, F. A. Ansari, A. S. Mokhtar, A. O. Ashraf, M. A. Wan and S. M. Sapuan

DOI : 10.3844/ajassp.2004.316.320

American Journal of Applied Sciences

Volume 1, Issue 4

Pages 316-320


The present work aims at finding an optimized finite difference scheme for the solution of problems involving pure convection heat transfer in slab shaped fresh water fish pieces. A generalized mathematical model was written in dimensionless form and an optimized scheme of the solutions was worked out. A fully explicit finite difference scheme, an implicit finite difference scheme and different combination of the two, with varying values of the weighing factor were thoroughly studied. All the possible options of temperature-time grid sizes were considered. It was found that the simplest explicit finite difference scheme with ten characteristic length division and Fourier number increments one sixth of the square of the space division size gives best convergence and minimal truncation error. Numerically computed and measured temperature-time variations were found to have excellent agreement.


© 2004 K. A. Abbas, F. A. Ansari, A. S. Mokhtar, A. O. Ashraf, M. A. Wan and S. M. Sapuan. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.