Full scale measurements of wind force acting on a 200m concrete chimney, and the chimney's response

Sanada, Satoshi

doi:10.1016/0167-6105(92)90342-8

Cited by 4 publications

(5 citation statements)

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“…(2) provides results which are in good agreement with full-scale measured data by Waldeck (1992) and Sanada et al (1992). Hence, Eq.…”

Section: Introductionsupporting

confidence: 83%

“…(iv) The turbulence intensity in the approach flow affects both the rms total lift coefficient, C L ‵ and the correlation length, L c . The higher the turbulence intensity, the higher is the C L ‵ (Kareem et al, 1989;Sanada et al, 1992). An improved empirical variation was suggested by Vickery between C L ‵ and modified turbulence intensity, I z * (Vickery 1994).…”

Section: Introductionmentioning

confidence: 98%

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Across-wind response of tall circular chimneys to vortex shedding

Arunachalam

Lakshmanan

2015

Journal of Wind Engineering and Industrial Aerodynamics

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“…(2) provides results which are in good agreement with full-scale measured data by Waldeck (1992) and Sanada et al (1992). Hence, Eq.…”

Section: Introductionsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 98%

Across-wind response of tall circular chimneys to vortex shedding

Arunachalam

Lakshmanan

2015

Journal of Wind Engineering and Industrial Aerodynamics

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“…There was substantial, but not dominant, energy at low-frequencies, due to the buffeting effects of turbulence. Sanada & Nakamura (1983) and Sanada, Suzuki & Matsumoto (1992) published results measured on a 200m high reinforced concrete stack; the readings were obtained from pressure tappings installed at an elevation of 140 m where the diameter was 15 m. The results have also been reproduced and discussed by Vickery & Daly (1984) and Vickery (1991). The surface roughness for this structure is not known, but is likely to be comparable to that for the Hamburg television tower.…”

Section: Full-scale Resultsmentioning

confidence: 92%

The effect of free-stream turbulence on sectional lift forces on a circular cylinder

Blackburn

Melbourne

1996

J. Fluid Mech.

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Wind-tunnel experiments were conducted to examine the effect of grid-generated turbulence on lift forces at sections of a circular cylinder. Turbulence of longitudinal intensity between 0.6% and 18% was employed, with cylinder Reynolds numbers in the range 1 × 105 to 5 × 105. Addition of low-intensity turbulence had the primary effect of inducing the critical transition at Reynolds numbers below that for smooth flow; above transition there was little difference between the forces experienced by the cylinder in smooth or turbulent flow, with no sign of organized vortex shedding.At higher turbulence intensities effects consistent with a return to organized vortex shedding were observed, particularly for the highest intensity and at the upper end of the Reynolds number range; lift coefficients were greater than in smooth supercritical flow, with a broad spectral peak centred near a Strouhal number of 0.23 accompanied by an increase in spanwise correlation lengths of lift force.

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“…Since its first experimental observation by Mallock (1907) and Bénard (1908), a large body of work has been dedicated to its characterization. For instance, the practical importance of quantifying the unsteady loads generated by the vortex street has motivated unsteady lift and drag force measurements over a range of Re from the onset of two-dimensional oscillation (Re ≈ 47) up to and past the point at which the boundary layer becomes fully turbulent (Re ≈ 2 × 10 6 ) (Fung 1960;Gerrard 1961;Bishop & Hassan 1964;Sanada & Matsumoto 1992;Norberg 2001). Here, it is worth noting that the mean drag force has also been measured over a similar range of Re (Wieselsberger 1921;Finn 1953;Delany & Sorenson 1953;Tritton 1959;Roshko 1961) as a consequence of its significance in aerodynamics.…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional compressible viscous flow around a circular cylinder

Canuto

Taira

2015

J. Fluid Mech.

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Direct numerical simulation is performed to study compressible, viscous flow around a circular cylinder. The present study considers two-dimensional, shock-free continuum flow by varying the Reynolds number between 20 and 100 and the freestream Mach number between 0 and 0.5. The results indicate that compressibility effects elongate the near wake for cases above and below the critical Reynolds number for two-dimensional flow under shedding. The wake elongation becomes more pronounced as the Reynolds number approaches this critical value. Moreover, we determine the growth rate and frequency of linear instability for cases above the critical Reynolds number. From the analysis, it is observed that the frequency of the Bénard-von Kármán vortex street in the time-periodic, fully-saturated flow increases from the dominant unstable frequency found from the linear stability analysis as the Reynolds number increases from its critical value, even for the low range of Reynolds numbers considered. We also notice that the compressibility effects reduce the growth rate and dominant frequency in the linear growth stage. Semi-empirical functional relationships for the growth rate and the dominant frequency in linearized flow around the cylinder in terms of the Reynolds number and freestream Mach number are presented.

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Full scale measurements of wind force acting on a 200m concrete chimney, and the chimney's response

Cited by 4 publications

References 0 publications

Across-wind response of tall circular chimneys to vortex shedding

Across-wind response of tall circular chimneys to vortex shedding

The effect of free-stream turbulence on sectional lift forces on a circular cylinder

Two-dimensional compressible viscous flow around a circular cylinder

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