  The study focuses on the wind loads acting on the standard Commonwealth
Advisory Aeronautical Council (CAARC) building model. Numerical modeling has
been used instead of employing wind tunnel experiments due to the requirement
of high physical space. This is mainly due to the superiority of CFD codes
included in turbulence models such as RANS and more precise LES. However, the
shortcoming arising through basing the result on numerical investigations is
compensated by direct comparison to experimental data available in literature.
The study extends beyond the typical rigid building structure giving account to
the minor deformations resulting from the impact of the wind force on an
aeroelastic structure through coupled two-way fluid structure interaction,
while designing the building to have its natural fundamental frequency of 0.2
Hz. An improved Smagorinsky-Lily model was used for all LES models and the
results were compared with available wind tunnel experimental data. It was
found that coupled LES analysis provided better correlation to wind tunnel data
compared to rigid fluid domains with respect to pressure distribution and wake
formation despite the additional computation time taken. However, all these
readings were dependent on the boundary conditions which needs to be estimated
concisely fur future use.
