Discrete vortex method simulations of the aerodynamic admittance in bridge aerodynamics

Johannes Tophøj Rasmussen, Mads Mølholm Hejlesen, Allan Larsen, Jens Honore Walther

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We present a novel method for the simulation of the aerodynamic admittance in bluff body aerodynamics. The method introduces a model for describing oncoming turbulence in two-dimensional discrete vortex method simulations by seeding the upstream flow with vortex particles. The turbulence is generated prior to the simulations and is based on analytic spectral densities of the atmospheric turbulence and a coherence function defining the spatial correlation of the flow. The method is validated by simulating the turbulent flow past a flat plate and past the Great Belt East bridge. The results are generally found in good agreement with the potential flow solution due to Liepmann.
Original languageEnglish
JournalJournal of Wind Engineering & Industrial Aerodynamics
Volume98
Issue number12
Pages (from-to)754-766
ISSN0167-6105
DOIs
Publication statusPublished - 2010

Keywords

  • Flat plate
  • Discrete vortex method
  • Fluid structure interaction
  • Aerodynamic admittance
  • Turbulence
  • Wind field simulation

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