Abstract:
transfer in a homogenous finite cylinder to predict the local temperature and sterilizing
value during caviar pasteurization. A fixed grid finite difference method was used in the
solution of heat transfer equations according to Crank-Nicolson’s scheme. The model was
validated by comparison of the experimental temperature profiles during caviar
pasteurization with the model predicted values (Correlation Coefficient> 0.99 and Root
Mean Square Errors< 0.61ºC). The cold spot location was at the radial center between the
middle and top of the jar on the vertical axis. For caviar pasteurization, the required
heating time for cold spot to reach the desired F-value ( C F C
°
°
5.5
82 2.
= 0.19 min) was 128
minutes at 55°C and 37.63 minutes at 65°C. The results indicated that the developed
model could be successfully applied to simulate the caviar thermal processing.
Keywords: Crank-Nicolson’s scheme, Thermal lethality
