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Issue 20 (4) 2021 pp. 37-54

Amelia Albin 1, Dorota Kula 2

1 student
2
Institute of Civil Engineering, Warsaw University of Life Sciences – SGGW, Warsaw, Poland

Transport of mutually cooperating triplets of thermal Fourier fluctuations through two-phase periodically layered partition wall

Keywords: heat conduction, effective heat conduction, boundary effect behaviour, building partition
Abstract:

The paper analyses boundary effect behaviour in a building partition made of a two-component layered composite.
A two-dimensional model of such barrier has been adopted in which the boundary effect behaviour
is described by a system of ODE’s. It has been proved that, for selected types of fluctuations, a hypothesis
formulated in the end of the paper is true, i.e. a partition reacts for the presence of boundary package of fluctuations
consisting of one even and two odd fluctuations merely with a typical exponentially damped transport
of these boundary fluctuations. Their sinusoidal pulsations in the direction transversal to the periodicity
directions are not possible. The exponential damping is maximal for components with very different material
properties (values of parameters kII/kI and ηI close to zero). Such situations correspond to a characteristic peak
of the graphs included in the paper.

pub/20_4_37.pdf Full text available in in Adobe Acrobat format:
http://www.architectura.actapol.net/volume20/issue4/20_4_37.pdf

For citation:

MLA , Amelia Albin, and Dorota Kula. "Transport of mutually cooperating triplets of thermal Fourier fluctuations through two-phase periodically layered partition wall." Acta Sci.Pol. Arch. 20.4 (2021): 37-54.
APA (2021). . Acta Sci.Pol. Arch. 20 (4), 37-54
ISO 690 , Amelia Albin, KULA, Dorota. Transport of mutually cooperating triplets of thermal Fourier fluctuations through two-phase periodically layered partition wall. Acta Sci.Pol. Arch., 2021, 20.4: 37-54.
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Streszczenie w języku polskim:
http://www.architectura.actapol.net/tom20/zeszyt4/abstrakt-37.html