3D NUMERICAL ANALYSIS OF HEAT EXCHANGE IN BUILDING STRUCTURES WITH CAVITIES

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3D NUMERICAL ANALYSIS OF HEAT EXCHANGE IN BUILDING STRUCTURES WITH CAVITIES

In the paper, the heat transfer inside a building block with cavities is analyzed and a brief overview of the relevant physical problem is given. The equations governing the heat exchange processes are presented and a numerical model is derived with the help of ANSYS software. The role of radiation and convection inside the cavities is emphasized throughout the work. The results show that in such cavities the radiation mechanism of heat transfer is dominant. The authors also examine the dependence of the effective heat conductivity on the properties of clay material. Using the numerical model, attempts have been made to improve the heat resistance of a building block. Possibilities of practical application of numerical modelling in the heat insulation material engineering are discussed.

Cepīte, D. & Jakovičs, A. (2008). Analysis of heat transfer in the structures with regularly arranged cavities. Latv. J. Phys. Tec. Sci., 45 (4), 14-24.

Incropera, F. P. & De Witt, D. P. (1990). Fundamentals of Heat and Mass Transfer. New York: John Wiley & Sons.

ANSYS CFX, Release 12.0 User's Guide (2009).

Lodes būvniecības sistēma, 3. izd., A/S "Lode" (2010) (in Latvian)

Latvian Journal of Physics and Technical Sciences

The Journal of Institute of Physical Energetics

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CiteScore 2018: 0.32

SCImago Journal Rank (SJR) 2018: 0.147
Source Normalized Impact per Paper (SNIP) 2018: 0.325

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