Title of article :
Numerical simulation of the fluid–structure interaction in a tube array under cross flow at moderate and high Reynolds number
Author/Authors :
Shinde، نويسنده , , V. and Marcel، نويسنده , , T. and Hoarau، نويسنده , , Y. and Deloze، نويسنده , , T. and Harran، نويسنده , , G. and Baj، نويسنده , , F. and Cardolaccia، نويسنده , , J. and Magnaud، نويسنده , , J.P. and Longatte، نويسنده , , E. and Braza، نويسنده , , M.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Pages :
15
From page :
99
To page :
113
Abstract :
The unsteady loads in a tube bundle are studied at moderate and high Reynolds number by means of URANS and hybrid (DDES) modelling. The onset of fluid-elastic instability is analysed for different structural parameters, Scruton number and reduced velocity. The simulations have been carried out with the code NSMB (Navier–Stokes Multi Block) by using turbulence modelling methods URANS and DDES (Delayed Detached Eddy Simulation). The CEA-DIVA configuration is considered for the cylinders array for an inter-tube Reynolds number 60 000. The study is carried out for a configuration of (4×5) cylinders in static conditions as well as for the vertical free motion of one of the central cylinders in one DOF (Degree Of Freedom).The inter-tube Reynolds number is 60 000. It is found that this cylinder spontaneously displays an oscillatory motion which first corresponds to Vortex Induced Vibration (VIV), associated to a lock-in mechanism for low values of the reduced velocity and secondly develops Movement Induced Vibration, MIV, for higher values of the reduced velocity. The variation of the cylinder׳s oscillations frequency, of the unsteady loads and the structure׳s displacement are studied as a function of the reduced velocity for low and high values of the Scruton number. The increase of the phase-lag between the forces and the displacement is predicted and discussed for different Scruton number values and reduced velocities.
Keywords :
1 DOF Fluid–structure interaction , Cylinder array , Turbulent flow , Numerical simulation
Journal title :
Journal of Fluids and Structures
Serial Year :
2014
Journal title :
Journal of Fluids and Structures
Record number :
2214459
Link To Document :
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