Computational study on aerodynamics of long-span bridges

被引：2

作者：

Yoo, Ilyong ^{[1
]}

Kwak, Einkeun ^{[1
]}

Lee, Seungsoo ^{[1
]}

Kim, Beom Soo ^{[1
]}

Park, Si Hyong ^{[2
]}

机构：

[1] Inha Univ, Dept Aerosp Engn, Inchon 402751, South Korea

[2] MiasIT, Songnam 462807, South Korea

来源：

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2009年 / 23卷 / 03期

关键词：

Unsteady aerodynamics; Long-span bridge; Computational fluid dynamics; Preconditioning method; Reynolds averaged; Navier-stokes equations; SUSPENSION; SIMULATION; FLOWS;

D O I：

10.1007/s12206-009-0115-z

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A numerical procedure for aerodynamic load analysis of long span bridges is presented. The preconditioned Reynolds averaged Navier-Stokes equations are adopted to compute flows over the bridges. To capture the turbulent characteristics of the flows, two equation turbulence models, Coakley's q - omega model and Menter's k - omega SST model, are used to compute the turbulent viscosity. A dual time stepping method in conjunction with the AF-ADI method is used to advance the solution in time. A loosely coupled method of the preconditioned RANS equations with the turbulence model equations is employed for fast computation without losing numerical stability. The numerical method for the aerodynamic load analysis is verified against well-known benchmark problems. Aerodynamic loads of two real bridges are computed with the method to demonstrate the usefulness of the method.

引用

页码：802 / 813

页数：12

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