Large Eddy Simulations of Flow past a Circular Cylinder with/without an Upper Rivulet

Xiao Qing Du; Yan Zhao

doi:10.4028/www.scientific.net/AMM.90-93.851

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 90-93Large Eddy Simulations of Flow past a Circular...

Large Eddy Simulations of Flow past a Circular Cylinder with/without an Upper Rivulet

Abstract:

Large eddy simulation (LES) is utilized to simulate flow around a circular cylinder with/without an upper rivulet at Reynolds number 70000. Mean and fluctuating wind pressure coefficients on the artificial upper rivulet and the circular cylinder are obtained. The flow field and the vorticity magnitude in the wake flow zone of the cable model with rivulet at different positions were also investigated. It is found that a small vortex occur near the back of rivulet, when it locates in some particular positions, that might be the reason aerodynamic forces changing dramatically. These results lay foundation for the research on regulation about the influence of rivulet size and shape on cable aerodynamic in future.

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Periodical:

Applied Mechanics and Materials (Volumes 90-93)

Pages:

851-856

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.90-93.851

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Online since:

September 2011

Authors:

Xiao Qing Du, Yan Zhao

Keywords:

Aerodynamic Force Coefficient, Large Eddy Simulation (LES), Rain-Wind-Induced Vibration, Stay Cable, Upper Rivulet

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