Investigation Of Wind Load Effect On Butterfly Roof Of Low Rise Building Using Computer Fluid Dynamic (Cfd) Simulation

• Main Author: Sayuti, Muhammad Mursyidi Ahmad
• Format: Monograph
• Language: English
• Published: Universiti Sains Malaysia 2022
• Subjects: T Technology; TA Engineering (General). Civil engineering (General)
• Online Access: http://eprints.usm.my/57653/1/Investigation%20Of%20Wind%20Load%20Effect%20On%20Butterfly%20Roof%20Of%20Low%20Rise%20Building%20Using%20Computer%20Fluid%20Dynamic%20%28Cfd%29%20Simulation.pdf; http://eprints.usm.my/57653/

The wind disaster tragedy has caused a lot of roof damage in Malaysia. The roof failure is occurred when the roof structure is not able to retain the high magnitude wind pressure and suction. This study is made to determine the pressure distribution, streamline and net pressure relationship with roof profile, slope and overhang application on the roof. There are a lot of studies conducted in this scope but the most of the study just focus on the typical roof shape that covered in MS 1553 2002 like hip, shed, gable and flat roof. This research is focused on Butterfly shape roof as this roof type is less discovered in the CFD past research. The main parameter for the analysis is the roof slope angle and overhang application on the roof structure. The RNG k-ε turbulence models were used in this study as this model has the capability to fulfil the objective of this study. Based on the result obtained, it was found that the roof with higher slope angle tend to have higher suction effect and the roof with lower slope angle tend to have higher pressure distribution especially in the windward section. The highest +Cp value for overall analysis is 0.997 that experienced by flat roof model in zone A. The highest -Cp value obtained is -2.94 for butterfly shape roof model with 30° slope. Finally, the net pressure (-Cp) at the windward overhang is higher than leeward overhang indicate that the windward overhang has highest suction effect.