INVESTIGATION OF FLUID-STRUCTURE INTERACTION BY USING SOLIDITY RATIO

Year 2019, Volume: 3 Issue: 2, 41 - 47, 01.12.2019

Begum Yurdanur Dagli , Yesim Tuskan , Dilay Uncu

Abstract

In this study,
fluid-structure interaction problem is investigated by solidity ratio approach.
In the first case (Case I) steady flow conditions are defined by using air as
fluid. The wind forces acting on the space lattice systems are determined by
considering the solidity ratio dictated by ANSI/TIA-222-G (Steel Antenna Towers
and Antenna Supporting Structures) technical specification. Stability of wind
tower is analyzed using SAP 2000 software program. In the second case (Case II)
unsteady flow conditions are evaluated by utilizing water waves acting on
lattice marine structures. Models are occurred two groups as three space frame
structures and three porous media models. Hydrodynamic wave forces are
represented by the Stoke’s Second Order wave theory. Morison equation is
employed to obtain lateral wave forces. The results of computational fluid
dynamics are performed by using ANSYS-Fluent software. Solidity ratio is used
to observe vortex effect that is based on turbulence around the structural
members. The hydrodynamic forces acting on the marine structures are presented
independent from configuration, depending on solidity ratio values.

Keywords

Fluid-Structure Interaction, Hydrodynamic Forces, Solidity Ratio

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