CFD Simulation of Specific Effects of Trees on Cross-ventilation of a Generic Building

Xuelin Zhang; A. U. Weerasuriya

CFD Simulation of Specific Effects of Trees on Cross-ventilation of a Generic Building

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Trees are often planted next to buildings for shade, evapotranspiration cooling, and as windbreaks. As windbreaks, trees slow downwind, consequently reducing the natural ventilation of the buildings that they shield. This reduction in natural ventilation has such parameters as the trees’ locations, geometry (height (h), width (w) and thickness (t)). This study investigated how these parameters impact the cross ventilation of a generic building (5m×5m×5m) exposed to an atmospheric boundary layer wind flow using Reynolds Average Navier-Stokes (RANS)-based Computational Fluid Dynamics (CFD) simulations. This study recommends trees shorter than 0.25H, and thinner than 0.168H with sparse and conical foliage to plant upstream of a building, but not within 1H to 3.5H, to minimize adverse effects on cross ventilation.

Original language	English
Title of host publication	Healthy Buildings 2023
Subtitle of host publication	Asia and Pacific Rim
ISBN (Electronic)	9781713890850
Publication status	Published - 2023
Externally published	Yes
Event	Healthy Buildings 2023: Asia and Pacific Rim - Tianjin East, China Duration: 17 Jul 2023 → 19 Jul 2023

Publication series

Name	Healthy Buildings 2023: Asia and Pacific Rim

Conference

Conference	Healthy Buildings 2023: Asia and Pacific Rim
Country/Territory	China
City	Tianjin East
Period	17/07/23 → 19/07/23

Keywords

Computational fluid dynamics simulation
Cross-ventilation
Local sensitivity analysis
Trees

Cite this

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title = "CFD Simulation of Specific Effects of Trees on Cross-ventilation of a Generic Building",

abstract = "Trees are often planted next to buildings for shade, evapotranspiration cooling, and as windbreaks. As windbreaks, trees slow downwind, consequently reducing the natural ventilation of the buildings that they shield. This reduction in natural ventilation has such parameters as the trees{\textquoteright} locations, geometry (height (h), width (w) and thickness (t)). This study investigated how these parameters impact the cross ventilation of a generic building (5m×5m×5m) exposed to an atmospheric boundary layer wind flow using Reynolds Average Navier-Stokes (RANS)-based Computational Fluid Dynamics (CFD) simulations. This study recommends trees shorter than 0.25H, and thinner than 0.168H with sparse and conical foliage to plant upstream of a building, but not within 1H to 3.5H, to minimize adverse effects on cross ventilation.",

keywords = "Computational fluid dynamics simulation, Cross-ventilation, Local sensitivity analysis, Trees",

author = "Xuelin Zhang and Weerasuriya, {A. U.}",

note = "Publisher Copyright: {\textcopyright} 2023 Healthy Buildings 2023: Asia and Pacific Rim. All rights reserved.; Healthy Buildings 2023: Asia and Pacific Rim ; Conference date: 17-07-2023 Through 19-07-2023",

year = "2023",

language = "English",

series = "Healthy Buildings 2023: Asia and Pacific Rim",

booktitle = "Healthy Buildings 2023",

}

TY - GEN

T1 - CFD Simulation of Specific Effects of Trees on Cross-ventilation of a Generic Building

AU - Zhang, Xuelin

AU - Weerasuriya, A. U.

PY - 2023

Y1 - 2023

N2 - Trees are often planted next to buildings for shade, evapotranspiration cooling, and as windbreaks. As windbreaks, trees slow downwind, consequently reducing the natural ventilation of the buildings that they shield. This reduction in natural ventilation has such parameters as the trees’ locations, geometry (height (h), width (w) and thickness (t)). This study investigated how these parameters impact the cross ventilation of a generic building (5m×5m×5m) exposed to an atmospheric boundary layer wind flow using Reynolds Average Navier-Stokes (RANS)-based Computational Fluid Dynamics (CFD) simulations. This study recommends trees shorter than 0.25H, and thinner than 0.168H with sparse and conical foliage to plant upstream of a building, but not within 1H to 3.5H, to minimize adverse effects on cross ventilation.

AB - Trees are often planted next to buildings for shade, evapotranspiration cooling, and as windbreaks. As windbreaks, trees slow downwind, consequently reducing the natural ventilation of the buildings that they shield. This reduction in natural ventilation has such parameters as the trees’ locations, geometry (height (h), width (w) and thickness (t)). This study investigated how these parameters impact the cross ventilation of a generic building (5m×5m×5m) exposed to an atmospheric boundary layer wind flow using Reynolds Average Navier-Stokes (RANS)-based Computational Fluid Dynamics (CFD) simulations. This study recommends trees shorter than 0.25H, and thinner than 0.168H with sparse and conical foliage to plant upstream of a building, but not within 1H to 3.5H, to minimize adverse effects on cross ventilation.

KW - Computational fluid dynamics simulation

KW - Cross-ventilation

KW - Local sensitivity analysis

KW - Trees

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M3 - Conference contribution

AN - SCOPUS:85189939579

T3 - Healthy Buildings 2023: Asia and Pacific Rim

BT - Healthy Buildings 2023

T2 - Healthy Buildings 2023: Asia and Pacific Rim

Y2 - 17 July 2023 through 19 July 2023

ER -

CFD Simulation of Specific Effects of Trees on Cross-ventilation of a Generic Building

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Keywords

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