Discrete vortex method simulations of the aerodynamic admittance in bridge aerodynamics

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

doi:10.1016/j.jweia.2010.06.011

Discrete vortex method simulations of the aerodynamic admittance in bridge aerodynamics

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

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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 language	English
Journal	Journal of Wind Engineering & Industrial Aerodynamics
Volume	98
Issue number	12
Pages (from-to)	754-766
ISSN	0167-6105
DOIs	https://doi.org/10.1016/j.jweia.2010.06.011
Publication status	Published - 2010

Keywords

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

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10.1016/j.jweia.2010.06.011

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title = "Discrete vortex method simulations of the aerodynamic admittance in bridge aerodynamics",

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.",

keywords = "Flat plate, Discrete vortex method, Fluid structure interaction, Aerodynamic admittance, Turbulence, Wind field simulation",

author = "Rasmussen, {Johannes Toph{\o}j} and Hejlesen, {Mads M{\o}lholm} and Allan Larsen and Walther, {Jens Honore}",

year = "2010",

doi = "10.1016/j.jweia.2010.06.011",

language = "English",

volume = "98",

pages = "754--766",

journal = "Journal of Wind Engineering & Industrial Aerodynamics",

issn = "0167-6105",

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TY - JOUR

T1 - Discrete vortex method simulations of the aerodynamic admittance in bridge aerodynamics

AU - Rasmussen, Johannes Tophøj

AU - Hejlesen, Mads Mølholm

AU - Larsen, Allan

AU - Walther, Jens Honore

PY - 2010

Y1 - 2010

N2 - 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.

AB - 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.

KW - Flat plate

KW - Discrete vortex method

KW - Fluid structure interaction

KW - Aerodynamic admittance

KW - Turbulence

KW - Wind field simulation

U2 - 10.1016/j.jweia.2010.06.011

DO - 10.1016/j.jweia.2010.06.011

M3 - Journal article

SN - 0167-6105

VL - 98

SP - 754

EP - 766

JO - Journal of Wind Engineering & Industrial Aerodynamics

JF - Journal of Wind Engineering & Industrial Aerodynamics

IS - 12

ER -

Discrete vortex method simulations of the aerodynamic admittance in bridge aerodynamics

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Keywords

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