Fluctuating Lift and Drag Forces on Finite Lengths of a Circular Cylinder in the Subcritical Reynolds Number Range

West, G. S.; Apelt, C. J.

doi:10.1006/jfls.1996.0070

Cited by 45 publications

(21 citation statements)

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“…The magnitudes of the radial correlation areas show little variation over the range of Reynolds numbers tested. This is consistent with the results of West & Apelt (1997), who found no measurable variation in the spanwise crosscorrelation of pressure for a cylinder subjected to low turbulence flow in the subcritical range. The Strouhal-number dependence of the radial correlation areas is modelled using an equation similar to that for a Rayleigh probability distribution function.…”

Section: End-cap Radial Correlation Areassupporting

confidence: 93%

Modelling the Unsteady Axial Forces on a Finite-Length Circular Cylinder in Cross-Flow

Capone

Lauchle

2002

Journal of Fluids and Structures

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Section: End-cap Radial Correlation Areassupporting

confidence: 93%

Modelling the Unsteady Axial Forces on a Finite-Length Circular Cylinder in Cross-Flow

Capone

Lauchle

2002

Journal of Fluids and Structures

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“…This is consistent with the "nding of West and Apelt [14] based on experimental measurements at higher Re in the sub-critical range. The span-wise vibration amplitude of the cylinder is not constant, though.…”

Section: Force}displacement Correlationsupporting

confidence: 90%

“…result. This is not unexpected based on equations (13) and (14). When the predicted magnitude of the #uid force, f(t*), is almost the same for the 2-d.o.f.…”

Section: Ratios Ckmentioning

confidence: 47%

Flow-Induced Vibration of an Euler–bernoulli Beam

Wang

Liu

2001

Journal of Sound and Vibration

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“…the length-to-width ratio, largely influences C D and C L . There is relatively large scattering in C L , which is highly sensitive to the measurement length of the cylinder (West & Apelt 1997). Furthermore, C L is largest when measured at an elemental section, usually from the pressure distribution, and decreases with an increasing measurement length.…”

Section: Validation Of Force and St Measurementsmentioning

confidence: 99%

The wake of two side-by-side square cylinders

2011

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Aerodynamic interference between two cylinders involves most of the generic flow features associated with multiple structures, thus providing an excellent model for gaining physical insight into the wake of multiple cylindrical structures. This work aims to provide an experimental systematic study of the flow behind two side-by-side square cylinders. The square cylinder is a representative model for bluff bodies with sharp corners, characterized by a fixed flow separation point, which are distinct from those of continuous curvature with oscillating separation points, typically represented by the circular cylinder. Experiments were performed at a Reynolds number Re of 4.7 × 10 4 and a cylinder centre-to-centre spacing ratio T /d (d is the cylinder height) of 1.02-6.00. The flow was measured using different techniques, including hot wires, load cell, particle imaging velocimetry and laser-induced fluorescence flow visualization. Four distinct flow regimes and their corresponding T /d ranges are identified for the first time on the basis of the flow structure and the Strouhal number. Physical aspects in each regime, such as interference between shear layers, gap flow deflection and changeover, multiple flow modes, entrainment, recirculation bubble, vortex interactions and formation lengths, are investigated in detail and are connected to the characteristics of the time-averaged and fluctuating fluid forces. The flow displays a marked difference in many facets from that behind two side-by-side circular cylinders, which is linked to their distinct flow separation natures. A crucial role played by the gap flow and its passage geometry in contributing to the observed difference is also unveiled.

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Fluctuating Lift and Drag Forces on Finite Lengths of a Circular Cylinder in the Subcritical Reynolds Number Range

Cited by 45 publications

References 0 publications

Modelling the Unsteady Axial Forces on a Finite-Length Circular Cylinder in Cross-Flow

Modelling the Unsteady Axial Forces on a Finite-Length Circular Cylinder in Cross-Flow

Flow-Induced Vibration of an Euler–bernoulli Beam

The wake of two side-by-side square cylinders

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