Experimental study for the cross-flow around three cylinders in an isosceles right triangle configuration

Xu, Qi; Liu, Huiqun; He, Minjuan; He, Ran; Dong, J.

doi:10.1016/j.jweia.2017.08.013

Cited by 4 publications

(1 citation statement)

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“…POD analysis suggested that cluster orientation is a typical impact factor on the near wake development. Qiu et al [12] experimentally measured the pressure coefficients of three cylinders in an equilateral-triangular arrangement. Significant complicated aerodynamic interference effects were observed between three cylinders.…”

Section: Introductionmentioning

confidence: 99%

Spectral Element Numerical Investigation of Flow between Three Cylinders in an Equilateral‐Triangular Arrangement with Different Spacing Distances

Bao

Qin

et al. 2018

Shock and Vibration

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Two-dimensional incompressible Navier-Stokes equations are numerically solved using the high resolution spectral element method at Reynolds number 200. The flow between three cylinders in an equilateral-triangular arrangement is investigated. The center-to-center spacing distance ratio between two circular cylinders is varied from 1.5 to 12. Present numerical results show that the flow patterns and force characteristics are the result of the combined effects of Reynolds number, spacing distance, configuration arrangement, and incident angle. For the small spacing distance ratio of 1.5, the well-known biased flow phenomenon in the gap of downstream cylinders is found. And the biased flow is bistable in our study but not monostable. A small spacing distance means lower Strouhal number, drag, and root-mean-square lift coefficients. In the medium spacing distance ratio of 4.0, the suppressed effect of vortex shedding for the presence of the side-by-side downstream cylinders disappeared. Mean drag coefficients of downstream cylinders are basically identical to the value of flow past around a single circular cylinder. For the large spacing distance ratio of 8.0, the effects between three cylinders basically disappeared. The mean drag and lift coefficients, root-mean-square lift coefficients, and Strouhal number of three cylinders are essentially equivalent to those values of a single circular cylinder.

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Section: Introductionmentioning

confidence: 99%