A COMPUTA TIONAL AEROELASTIC APPROACH TO PREDICT GALLOPING OF ICED CONDUCTORS WITH THREE DEGREES OF FREEDOM
Large oscillations of an elastically mounted iced cylinder in a uniform incident wind flow are studied with a three-degree-of-freedom model (with horizontal, vertical and torsional motions), using two-dimensional fluid-structure interaction (FSI) analysis. A Computational Fluid Dynamics (CFD) approach is adopted in the analysis, based on the Unsteady Reynolds-Averaged Navier-Stokes (URANS) equations and the Spalart-Allmaras one-equation turbulence model. These algorithms are implemented in a finite element code, yielding the time history of the detailed flow field around and in the wake of the iced cylinder. Vortex shedding from the iced cylinder is numerically investigated for moderate Reynolds numbers, and a Computational Structural Dynamics (CSD) module is used to determine the dynamic response of the cylinder based on the fluid flow loading and structural support characteristics.
Amir Borna Wagdi G.Habashi Siva K.Nadarajah Ghyslaine McClure
Computational Fluid Dynamics Laboratory, Department of Mechanical Engineering, McGill University, Mo Department of Civil Engineering and Applied Mechanics, McGill University, Montreal, CANADA
国际会议
The 14th International Workshop on Atmospheric Icing of Structures(第十四届结构物大气覆冰国际研讨会 IWAIS 2011)
重庆
英文
27
2011-05-08（万方平台首次上网日期，不代表论文的发表时间）