Abstract:The characteristics and computational requirements of both the standard k-ε turbulence model and the SST k-ε turbulence model were presented. The two models were applied to the identification of flutter derivatives of a real bridge deck. It has been found that, based on suitable computational domain and grids arrangement, these models can identify most flutter derivatives of bridge decks with reasonable agreement. The difference between specific flutter derivatives indicates that the SST k-ε turbulence model is superior to the standard k-ε model on flow field prediction around bridge decks, and is more suitable to be employed to identify flutter derivatives of bridges.