Co-host: The Institute of Electrical Engineering of Japan, Japanese Society of Steel Construction, Japan Society of Civil Engineers, Meteorlological Society of Japan, Architectural Institute of Japan, Japan Association for Wind Engineering
Pages 47
The unsteady aerodynamic force coefficients for the basic cross-section of the twin-box-shaped deck were assessed by a numerical simulation based on two-dimensional RANS. Then the calculated results were compared with measured data from wind tunnel test to assess the accuracy of the computation. In this investigation the k-omega-SST model was employed as the turbulent model. When the approaching wind was horizontal, the unsteady aerodynamic force coefficients by the computation were in good agreement with measured results. As the angle of attack increased, the difference of unsteady aerodynamic force was increased. Flutter analyses were conducted using the both aerodynamic coefficients. As a result, the flutter velocity using the CFD data was not so different from that using the experimental data.
