Group Layout Pattern and Outdoor Wind Environment of Enclosed Office Buildings in Hangzhou

Abstract

This paper presents a study of the effects of wind-induced airflow through the urban built layout pattern using statistical analysis. This study investigates the association between typically enclosed office building layout patterns and the wind environment. First of all, this study establishes an ideal site model of 200 m × 200 m and obtains four typical multi-story enclosed office building group layouts, namely the multi-yard parallel opening, the multi-yard returning shape opening, the overall courtyard parallel opening, and the overall courtyard returning shape opening. Then, the natural ventilation performance of different building morphologies is further evaluated via the computational fluid dynamics (CFD) simulation software Phoenics. This study compares wind speed distribution at an outdoor pedestrian height (1.5 m). Finally, the natural ventilation performance corresponding to the four layout forms is obtained, which showed that the outdoor wind environment of the multi-yard type is more comfortable than the overall courtyard type, and the degree of enclosure of the building group is related to the advantages and disadvantages of the outdoor wind environment. The quantitative relevance between building layout and wind environment is examined, according to which the results of an ameliorated layout proposal are presented and assessed by Phoenics. This research could provide a method to create a livable urban wind environment.

Improvement Strategies Study for Outdoor Wind Environment in a University in Beijing Based on CFD Simulation

“…Wind tunnel tests require costly and specialized equipment. CFD numerical simulation has become the main research method by virtue of its fast calculation speed and high efficiency [1,14,22,28,29].…”

“…Blocken et al [1] used CFD simulations to analyze the PLW comfort and safety on the campus of Eindhoven University of Technology, aiming at improving the quality of the wind environment in urban areas. Ying et al [22] used statistical analysis methods to study the effects of wind-induced airflow through the urban built layout pattern. Guo et al [23] used the CFD simulation tool PHOENICS to evaluate and study the correlation between urban morphology and wind environment.…”

Procedures and Methodologies for the Control and Improvement of Energy-Environmental Quality in Construction

“…The first paper published within this Special Issue, authored by Ying et al [1], deals with the natural ventilation performance in different configurations of yards in office buildings. It found that a higher comfort level corresponds to the multi-yard building type compared to the overall courtyard type.…”

Impact of Enclosure Boundary Patterns and Lift-Up Design on Optimization of Summer Pedestrian Wind Environment in High-Density Residential Districts

“…Instead, the CFD simulation method has the advantages of high speed, easy implementation, high accuracy and effectiveness, and low cost [12,13]. Therefore, with the development of computer technology and grid generation techniques, increasing numbers of researchers have performed CFD simulations to study urban wind environments [14][15][16]. For instance, Hang et al used CFD simulations to numerically investigate the air age and air exchange efficiency of an ideal high-density building complex under the effect of parallel winds, and proposed that wide streets and small building array lengths could help improve ventilation [17].…”