MODELLING OF FLUID FLOW AROUND HIGH-RISE BUILDINGS BY USING RANS METHOD IN OPENFOAM SOFTWARE

• Main Author: Sanjaya, Yongky
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/50999
• Institution: Institut Teknologi Bandung

Wind load is often defined as a static uniform distributed load in the design code, especially on small structures such as billboard, pedestrian cross bridge, etc. However, as a fluid, wind can deform from a laminar flow to a turbulence flow or it can also be amplified if there is enough disturbance around the object. If these small structures were not designed for a dynamic load or the corrected amplified load, it could collapse. This study aims to investigate the effect of street canyon width towards wind flow by observing a simplified model of 4 symmetrical high-rise buildings with changing street canyon width. The numerical model uses CFD with RANS in OpenFOAM v1912 which is validated with experimental results using a low wind speed wind tunnel and Particle Image Velocimetry (PIV).Some experiments have been performed in BBTA3 using a model with 1:420 scale, there are 2 models with different street canyon width. The result showed there is an increment of the mean wind speed about 5.92-20.20%.