CFD investigation of airflow characteristics of isolated buildings with different heights

Yuwei Dai, Zhengtao Ai, Cheuk Ming Mak

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

This paper investigates airflow patterns around an isolated building with the impact of different heights using computational fluid dynamics (CFD) simulations. Based on RNG k − ε model, the effect of building height is conducted by comparing a couple of flow characteristics of two building models. Previous wind tunnel experiment data are used to validate the computational simulations.
Building models with different height will lead to inconsistent airflow fields, including pressure distribution and velocity magnitude around the building. It is observed that high building model possesses larger recirculation region and under-pressure zone in the wake region behind the building, which implies different velocity performances between the two heights of building.
Comparison of the airflow patterns around buildings with different height reveals that distinguishable building models should be chosen considerately when conducting wind tunnel test.
Original languageEnglish
Title of host publicationECOS 2018: proceedings of the 31st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
Publication date2018
ISBN (Electronic)9789729959646
Publication statusPublished - 2018
Event31st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2018) - Guimaraes, Portugal
Duration: 17 Jun 201822 Jun 2018

Conference

Conference31st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2018)
CountryPortugal
CityGuimaraes
Period17/06/201822/06/2018

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