Numerical simulation of aerodynamic derivatives and critical wind speed for long-span bridges based on simplified steady wind field

作者：Xin Dabo^*; Ou Jinping

来源：Earthquake Engineering and Engineering Vibration, 2007, 6(2): 197-203.

DOI：10.1007/s11803-007-0729-z

• aerodynamic derivatives
• critical flutter wind speed
• numerical simulation
• wind tunnel test
• long-span bridges

Combining the computational fluid dynamics-based numerical simulation with the forced vibration technique for extraction of aerodynamic derivatives, an approach for calculating the aerodynamic derivatives and the critical flutter wind speed for long-span bridges is presented in this paper. The RNG k-epsilon turbulent model is introduced to establish the governing equations, including the continuity equation and the Navier-Stokes equations, for solving the wind flow field around a two-dimensional bridge section. To illustrate the effectiveness and accuracy of the proposed approach, a simple application to the Hume Bridge in China is provided, and the numerical results show that the aerodynamic derivatives and the critical flutter wind speed obtained agree well with the wind tunnel test results.

• 出版日期2007-6
• 单位哈尔滨工业大学; 大连理工大学