Measurement and modeling of airflow around buildings

This study uses steady RANS (Reynolds Averaged Navier-Stokes) equation in computational fluid dynamics (CFD) Ansys Fluent software to analyse the airflow around buildings. It will address wind flow patterns based on pedestrian level and neighbourhood scale. The aims are to investigate how building g...

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Main Author: Lim, Tianshun
Other Authors: Miao Jianmin
Format: Final Year Project
Language:English
Published: 2014
Subjects:
Online Access:http://hdl.handle.net/10356/60030
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-600302023-03-04T19:08:32Z Measurement and modeling of airflow around buildings Lim, Tianshun Miao Jianmin School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering::Fluid mechanics This study uses steady RANS (Reynolds Averaged Navier-Stokes) equation in computational fluid dynamics (CFD) Ansys Fluent software to analyse the airflow around buildings. It will address wind flow patterns based on pedestrian level and neighbourhood scale. The aims are to investigate how building geometry, height and configuration affect the flow around the buildings, natural ventilation potential and thermal comfort. Input variables such as wind direction and velocity will be closely matched to data in Singapore. Guidelines and validation of the building model were taken and conducted by comparing the wind flow patterns with respect to other studies. The standard k-ɛ model is applied as a canopy model and standard wall functions are being adopted. The effects and observations of the different factors will be presented in the results and discussion section. Lastly, an optimum building geometry and configuration will be proposed from this study through a comparison of the natural ventilation potential and pedestrian level thermal comfort in terms of wind speed greater than 1m/s with a constant plot ratio. The outcome would be applicable to HDB in helping them to come up with better designed buildings in terms of variation in geometry, height and configuration which would reduce energy consumption. Further research such as the spacing between the buildings can be carried out to offer a more complete study of wind comfort which involves flow around buildings. A study on wind comfort is also a critical process in getting approval for a building permit. Bachelor of Engineering (Mechanical Engineering) 2014-05-22T02:05:03Z 2014-05-22T02:05:03Z 2014 2014 Final Year Project (FYP) http://hdl.handle.net/10356/60030 en Nanyang Technological University 89 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Mechanical engineering::Fluid mechanics
spellingShingle DRNTU::Engineering::Mechanical engineering::Fluid mechanics
Lim, Tianshun
Measurement and modeling of airflow around buildings
description This study uses steady RANS (Reynolds Averaged Navier-Stokes) equation in computational fluid dynamics (CFD) Ansys Fluent software to analyse the airflow around buildings. It will address wind flow patterns based on pedestrian level and neighbourhood scale. The aims are to investigate how building geometry, height and configuration affect the flow around the buildings, natural ventilation potential and thermal comfort. Input variables such as wind direction and velocity will be closely matched to data in Singapore. Guidelines and validation of the building model were taken and conducted by comparing the wind flow patterns with respect to other studies. The standard k-ɛ model is applied as a canopy model and standard wall functions are being adopted. The effects and observations of the different factors will be presented in the results and discussion section. Lastly, an optimum building geometry and configuration will be proposed from this study through a comparison of the natural ventilation potential and pedestrian level thermal comfort in terms of wind speed greater than 1m/s with a constant plot ratio. The outcome would be applicable to HDB in helping them to come up with better designed buildings in terms of variation in geometry, height and configuration which would reduce energy consumption. Further research such as the spacing between the buildings can be carried out to offer a more complete study of wind comfort which involves flow around buildings. A study on wind comfort is also a critical process in getting approval for a building permit.
author2 Miao Jianmin
author_facet Miao Jianmin
Lim, Tianshun
format Final Year Project
author Lim, Tianshun
author_sort Lim, Tianshun
title Measurement and modeling of airflow around buildings
title_short Measurement and modeling of airflow around buildings
title_full Measurement and modeling of airflow around buildings
title_fullStr Measurement and modeling of airflow around buildings
title_full_unstemmed Measurement and modeling of airflow around buildings
title_sort measurement and modeling of airflow around buildings
publishDate 2014
url http://hdl.handle.net/10356/60030
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