ABSTRACT
Many efforts have been done using Surrogate based optimization model to successfully study the aerodynamic performance of Bridge deck combined with shape modification by the mean of Computational Fluid Dynamics (CFD) approach. Notably, CFD is employed for calibration of the surrogate model. The CFD analyses was conducted through multi-fidelity simulations to overcome some drawbacks of low and high fidelity such as RANS and LES respectively. Though CFD analyses are accurate and reliable, they can be computationally expensive. Therefore, efficient and robust design algorithms are essential for rapid optimization. In this work a Space Mapping (SM) based surrogate model is used to study the aerodynamic effect on shape modification of streamline bridge deck. Space Mapping approach is obtained from low-fidelity models, by exploiting the same CFD solver as used to evaluate the high-fidelity model but with a coarser mesh. To expose the efficiency of this approach, simulation results obtained from the selected bridge section shape modification is given.
