Impact of domain discretization on the accuracy of a 2D model of PCM module for ventilation application

Viktor Bue Ljungdahl*, Muhyiddine Jradi, Jonathan Dallaire, Christian T. Veje

*Corresponding author for this work

Research output: Contribution to journalConference articleResearchpeer-review

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Abstract

Optimal selection of domain discretization for numerical Phase Change Material (PCM) models is useful to establish confidence in model predictions and minimize the time consumption for conducting design analysis. Very detailed and geometrically complex models are usually applied utilizing several million cells. A 2D numerical PCM model of a climate module for thermal comfort ventilation is investigated. The mesh independence was conducted on 22 different mesh sizes ranging from 70 to 10.870 nodes. Convergence criteria was evaluated based on average air supply temperature and total heat transfer between the PCM and the air within the simulation time interval. Less than 0.1 % change in the air supply temperature and the heat transfer between the PCM and the air was achieved with 5250 and 9870 nodes, respectively. Thereby highlighting that a relatively small amount of nodes can be considered to achieve sufficient accuracy to conduct analysis of PCM applications.
Original languageEnglish
Article number012023
Book seriesJournal of Physics: Conference Series (Online)
Volume2116
Number of pages4
ISSN1742-6596
DOIs
Publication statusPublished - 8. Dec 2021
Event8th European Thermal Sciences Conference, (EUROTHERM 2021): Virtual -
Duration: 20. Sep 202122. Sep 2021

Conference

Conference8th European Thermal Sciences Conference, (EUROTHERM 2021)
Period20/09/202122/09/2021

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