Open AccessComputational fluid dynamics analysis on the effect of flow distribution on pedestrian in urban area
Author(s) -
Haszeme Bin Abu Kasim,
Mohd Faizal Mohamad,
Siti Khadijah Alias,
Ahmad Khudzairi Khalid,
Muhd Azhar Zainol,
Nur Asyikin Binti Ahmad Tajudin
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/834/1/012030
Subject(s) - computational fluid dynamics , pedestrian , reynolds averaged navier–stokes equations , turbulence , cfd in buildings , meteorology , closure (psychology) , wind speed , marine engineering , environmental science , flow (mathematics) , mechanics , engineering , geography , civil engineering , physics , economics , market economy
Buildings in urban area consist of various heights and building arrangements. Meanwhile, the pedestrians at the area must be considered for their wind comfort and wind safety. This is because, near high-rise buildings, high wind velocities are often introduced at pedestrian level that can be experienced as uncomfortable or even dangerous. Nowadays feasibility Computational Fluid Dynamics (CFD) for the assessment in wind engineering such as wind comfort and safety of pedestrian are very demanding. Hence, this study is conducted using CFD to analyses the effect of different building heights on the wind flow distribution towards pedestrian. The study was done on two different cases based on two different buildings (uniform height and non-uniform height) with squared and staggered arrangements. The turbulent wind over the pedestrian was acquired by solving the 3D steady state Reynold’s-Average Navier-Stokes (RANS) equations using RNG k-ε turbulence closure model. The results show that changes on the height of the buildings varies from the center of the urban canyon based on the vorticity of the flow distribution.