摘要
选取有代表性的大海带东桥、南京二桥流线型闭口箱梁断面和荆沙桥钝头开口板梁断面 ,用动网格法考虑流体和结构的耦合作用 ,用有限单元法求解原始变量二维不可压粘性流体的N S方程 ,计算其气动导数 ,并用半逆解法确定颤振临界风速。计算结果和实验值相当吻合。
Numerical assessment of aerodynamic derivatives are conducted by solving two dimensional incompressible Navier Stokes equations with discrete projection finite element method and multigrid techniques. Unsteady aerodynamic force on the heaving or torsional oscillated rigid decks are computed and the motion of deck is accounted by moving mesh method. The aerodynamic derivatives are extracted with least square method and critical wind speed of flutter are calculated with Scanlan's method. The results of decks with typical shape such as Great Belt East Bridge, Nanjing 2 nd Bridge and Jingsha Bridge are in agreement well with experiments.
出处
《空气动力学学报》
EI
CSCD
北大核心
2000年第1期26-33,共8页
Acta Aerodynamica Sinica
基金
国家自然科学基金
