Aerodynamic Influence of Openings on Tall V-Shaped Building Under Extreme Wind Environment
摘要
Skyscraper or extreme High-rise buildings are enormously growing as a consequence of land shortfall and growing population. These skyscrapers are very responsive to dynamic wind environment for its slenderness, excessive height and lightness of construction material. Therefore, aerodynamic force reduction is the major concern for structural engineers, researchers of these type of tall buildings. The major goal of current research work is to ascertain the aerodynamic impacts of various openings on tall V-shaped buildings that are experiencing wind-induced force. The primary factors that are considered are the opening ratio (projected area of opening * number of opening/total projected area of building) and the number of openings in the V-shaped high-rise building. The opening ratio is adopted 5–20% with 5% increment in opening ratio by adjustment of opening area maintaining same for single and double openings. For each scenario, the wind directionality ranges from 0° up to 90°, with regular intervals of 30°. Computational Fluid Dynamics (CFD) is applied to conduct the steady-state simulation grounded on RANS k-ε turbulence model which helps to simulate a virtual wind tunnel. Mesh grid concurrence investigation is performed to enhance the precision and accuracy of results through the use of finer mesh of the computational domain. Aerodynamic coefficients in time and frequency domain are obtained by conducting numerical simulation of High-rise V shaped model without opening, with single and double opening. The effectiveness of single and double opening has also been compared between all cases with and without them in the building model, and observations have been made regarding the acceptability of all the models with openings based on the quantitative outcomes.