Computing the 2D temperature distribution in logs stored for a long time in an open warehouse in winter and during subsequent autoclave steaming / Nenčo S. Delijski ...[et al.]. -- Graf., tab. -- Lit. - An approach to computing and research on the 2D non-stationary temperature distribution in horizontally situated logs in an open warehouse under the influence of periodically changing atmospheric temperature in winter and during their subsequent steaming in autoclaves is described in the paper. Mathematical descriptions of the changing atmospheric temperature and also of the temperature of the steaming medium in the autoclaves and of the conditioning air medium after steaming are introduced as boundary conditions in own mutually connected 2D non-linear mathematical models of the log freezing and defrosting processes. Numerical solutions of the coupled models in the calculation environment of Visual FORTRAN Professional are given as an application of the suggested approach. The results from a simulative investigation of the change in the 2D temperature field and average mass temperature of beech (Fagus sylvatica L.) logs with a diameter of 0.4 m, length of 0.8 m, and moisture content of 0.6 kg∙kg-1 during their 5 dayand night-long continuous alternating freezing and defrosting at sinusoidal change of the air temperature with different initial values below and equal to 0 °C and with different amplitudes, and also during steaming of such frozen logs with different initial temperature in an autoclave and their subsequent conditioning are graphically presented and analysed.

In Acta Facultatis Xylologiae Zvolen : vedecký časopis Drevárskej fakulty. -- Zvolen : Technická univerzita vo Zvolene, 2021. -- ISSN 1336-3824. -- Vol. 63, no. 1 (2021), s. 49-62

I. Delijski, Nenčo S., 1945-
II. Dzurenda, Ladislav, 1955-
III. Niemz, Peter
IV. Angelski, Dimitar
V. Tumbarkova, Natalia
VI. Acta Facultatis Xylologiae Zvolen : vedecký časopis Drevárskej fakulty. -- Vol. 63, no. 1 (2021), s. 49-62

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