Initial credibility analysis of a numerical model of heat and moisture transfer in porous building materials

Michał Wasik , Łukasz Cieślikiewicz , Piotr Łapka , Piotr Furmański , Michał Kubiś , Mirosław Seredyński , Karol Pietrak , Tomasz Wiśniewski , Maciej Jaworski

Abstract

The work presents initial credibility analysis of a numerical model of heat and moisture transfer in porous building materials. Single moist brick located in an air flow duct was considered. Only one wall of the brick was in contact with air and only through this boundary heat and moisture were exchanged between air and brick. Developed model considered dry air, vapor water, liquid water and dry solid material. Local non-equilibrium between different moisture phases was assumed. The numerical model was implemented with the aid of commercial software ANSYS Fluent and by using its advance customization interface, i.e., the User-Define-Function, User-Define-Scalar and User-Define-Memory. Furthermore, experiments were carried out on specially developed stand to compare measured and simulated temperature variations in the brick. The measured and predicted temperature plateau due to evaporation of liquid moisture in the brick had similar level. However, calculated drying time was significantly overestimated comparing to experimental data.
Author Michał Wasik (FPAE / IHE)
Michał Wasik,,
- The Institute of Heat Engineering
, Łukasz Cieślikiewicz (FPAE / IHE)
Łukasz Cieślikiewicz,,
- The Institute of Heat Engineering
, Piotr Łapka (FPAE / IHE)
Piotr Łapka,,
- The Institute of Heat Engineering
, Piotr Furmański (FPAE / IHE)
Piotr Furmański,,
- The Institute of Heat Engineering
, Michał Kubiś (FPAE / IHE)
Michał Kubiś,,
- The Institute of Heat Engineering
, Mirosław Seredyński (FPAE / IHE)
Mirosław Seredyński,,
- The Institute of Heat Engineering
, Karol Pietrak (FPAE / IHE)
Karol Pietrak,,
- The Institute of Heat Engineering
, Tomasz Wiśniewski (FPAE / IHE)
Tomasz Wiśniewski,,
- The Institute of Heat Engineering
, Maciej Jaworski (FPAE / IHE)
Maciej Jaworski,,
- The Institute of Heat Engineering
Pages0201061-0201066
Publication size in sheets0.5
Book COMPUTATIONAL TECHNOLOGIES IN ENGINEERING (TKI’2018): Proceedings of the 15th Conference on Computational Technologies in Engineering, AIP Conference Proceedings, vol. 2078, 2019, AIP Publishing, ISBN 978-0-7354-1806-6
DOIDOI:10.1063/1.5092109
URL https://aip.scitation.org/doi/10.1063/1.5092109
Languageen angielski
File
1.5092109.pdf 929.29 KB
Score (nominal)15
ScoreMinisterial score = 15.0, 24-08-2019, ChapterFromConference
Publication indicators Scopus Citations = 0; WoS Citations = 0
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