VISUALIZATION OF THE DEFROSTING PROCESS OF BEECH LOGS

Abstract

By the first co-author earlier a two-dimensional mathematical model has been created, solved, and verified for the transient non-linear heat conduction in frozen logs during their heating. Now in the model the dependence of the fibre saturation point of the separate wood species from the temperature has been incorporated.
The paper presents graphically solutions of the updated model and the 3D and 2D visualization of the obtained calculated results about the temperature distribution in the longitudinal section of beech frozen logs with diameter 0,4 m, length 0,8 m, initial temperature -40 oC and moisture content 0,3 kg.kg-1 and 0,6 kg.kg-1 during their defrosting at temperature of the processing medium 80 oC.