Open Access

ARTICLE

High-Density Block Transformation to Increase Natural Ventilation Based on CFD Simulation

Siqi Liu^1,2,3, Guanqi Huang^3,4,*

1 Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi’an, 710075, China
2 Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi’an, 710075, China
3 Center for Housing Innovations, Chinese University of Hong Kong, Hong Kong
4 Guangzhou Urban Planning & Design Survey Research Institute, Guangzhou, 510060, China

* Corresponding Author: Guanqi Huang. Email:

(This article belongs to this Special Issue: EFD and Heat Transfer II)

Fluid Dynamics & Materials Processing 2021, 17(1), 141-157. https://doi.org/10.32604/fdmp.2021.011990

Received 09 July 2020; Accepted 30 December 2020; Issue published 09 February 2021

Abstract

Many countries in the world have experienced extremely rapid urbanization during recent decades. The rapid development of densely populated areas has produced many urban environmental problems. This research explores the relationship between urban morphology and ventilation conditions. Through 3D modeling and Computational Fluid Dynamics (CFD) simulation, we focus on the large scale ventilation of an extended area with several buildings. As a testbed, in particular, the core part of Kwun Tong industrial park in Hong Kong is examined, and in order to validate the approach, 10 measurement points are used to get experimental values to be used for comparison (such points are located in different positions involving traffic road, pedestrian path and open space). The error range (±0.7 m/s) indicates that the agreement between field measurement and CFD calculation is good. On the basis of design guidelines and earlier studies, the effective configuration (in terms of building) of this area is partially transformed (virtually, i.e., in the numerical simulations) in order to assess the ensuing changes in terms of wind speed in different locations. This results in a general design and analysis methodology potentially applicable to other areas.

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Keywords

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