Effects of incidence and afterbody shape on flow past bluff cylinders

Luo, S. C.; Yazdani, M. G.; Chew, Y. T.; Lee, T.S.

doi:10.1016/0167-6105(94)90092-2

Cited by 127 publications

(55 citation statements)

References 9 publications

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“…For comparison, experimental and numerical (from DNS and LES) results from the literature are also given [18,19,20,21,22]. As can be observed, the AMR-LES predicts the computed flow parameters in good agreement with the ones in literature, using the refinement criteria mentioned before.…”

Section: Flow Around a Square Cylinder At Re=22000supporting

confidence: 60%

“…Numerical simulations of the flow around a square cylinder are performed at Re = 22000 [18,19,20,21,22], where Reynolds number is defined in terms Figure 13. Vorticity structures in the near wake obtained with the adaptive grid are plotted in Figure 13 (left) and the computational grid for that time step is plotted in Figure 13 (right).…”

Section: Flow Around a Square Cylinder At Re=22000mentioning

confidence: 99%

“…These cases cover the main turbulent flows features such as flow separation, vortex shedding and appearance of vortex in the wake of the cylinder [18,19,20,21,22,23,24].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Parallel adaptive mesh refinement for large-eddy simulations of turbulent flows

Antepara

Lehmkuhl

Borrell³

et al. 2015

Computers & Fluids

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Section: Flow Around a Square Cylinder At Re=22000supporting

confidence: 60%

Section: Flow Around a Square Cylinder At Re=22000mentioning

confidence: 99%

See 1 more Smart Citation

Parallel adaptive mesh refinement for large-eddy simulations of turbulent flows

Antepara

Lehmkuhl

Borrell³

et al. 2015

Computers & Fluids

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show abstract

“…Previous studies have greatly enhanced our understanding of flow past a single cylinder both numerically and experimentally (Luo et al 1994;Williamson 1996;Zdravkovich 1997;Williamson and Govardhan 2004;Alonso et al 2009;Yoon et al 2010;Bao et al 2011;Nemes et al 2012). As confirmed in these works, some parameters, such as material properties of the cylinder, cross-section shape, flow incidence angle, and Reynolds number, can lead to significant changes in flow field, as well as flow-induced forces and vibrations of the cylinder.…”

Section: Introductionmentioning

confidence: 64%

Numerical Study of Flow Past Two Transversely Oscillating Triangular Cylinders in Tandem at Low Reynolds Number

Zhai

Wang

2017

JAFM

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Flow past two tandem triangular cylinders forced to oscillate transversely in a uniform flow, is numerically investigated at a Reynolds number Re = 100. The incompressible Navier-Stokes equations in ArbitraryLagrangian-Eulerian formulation are solved by four-step fractional finite element method. The two cylinders are oscillated in phase and their motions are limited to low amplitudes with a wide frequency range. This study focuses on two typical spacings between the two cylinders, corresponding to vortex suppression (VS) regime and vortex formation (VF) regime respectively for flow past two stationary cylinders. Numerical results show that the response characteristics of two cylinders are significantly affected by the spacing, oscillation amplitude and frequency. For the VS spacing, both cylinders have a wider lock-on region, especially at relatively larger amplitude and higher frequency; the downstream wake patterns are mainly 2S and a combination of 2S* and 2S. However, for the VF spacing, the lock-on frequency range of the cylinders is even slightly narrower than that of a single oscillating cylinder; the wake field is more complex since it may comprises 2S, P+S and 2S* structures at some higher frequencies. Additionally, the hydrodynamic forces are also discussed in terms of mean and root mean square quantities, and reveal large differences between oscillating and stationary cylinders.

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“…An analysis of the mean and fluctuating loads acting on triangular prisms placed with different wind directions was presented in several works like Lindsey (1938), El-Sherbiny (1983), Luo et al (1994) and Alonso (2005). In Srigrarom and Koh (2008) a qualitative analysis of the flow generated from a rotationally oscillating triangular cylinder was carried out through flow visualizations and PIV measurements.…”

Section: Application Of the Pod Procedures To Hot-wire Signalsmentioning

confidence: 99%

Time–frequency analysis of the dynamics of different vorticity structures generated from a finite-length triangular prism

Iungo

Lombardi

2011

Journal of Wind Engineering and Industrial Aerodynamics

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a b s t r a c tTime-frequency analysis of the dynamics of different wake vorticity structures, generated from a triangular prism orientated with its apex edge against the incoming wind, is carried out. Time-frequency analysis of time-series obtained with hot-wire anemometry is performed through a procedure based on proper orthogonal decomposition and spectral components are extracted with a technique that provides an increased efficiency for fluid dynamic applications.

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Effects of incidence and afterbody shape on flow past bluff cylinders

Cited by 127 publications

References 9 publications

Parallel adaptive mesh refinement for large-eddy simulations of turbulent flows

Parallel adaptive mesh refinement for large-eddy simulations of turbulent flows

Numerical Study of Flow Past Two Transversely Oscillating Triangular Cylinders in Tandem at Low Reynolds Number

Time–frequency analysis of the dynamics of different vorticity structures generated from a finite-length triangular prism

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