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NUMERICAL SIMULATION OF FLOW AROUND TWO CYLINDERS IN VARIOUS ARRANGEMENTS

Yun Fat Chan, Kit Lam

Open publisher page 2 citations

Abstract

The surface vorticity method based on the vortex shedding, vorticity convection and diffusion was employed to simulate two cylinders in various arrangements in subcritical Reynolds numbers. For visualization, a computer graphic system is used to display the result in terms of vorticity distribution and velocity vector. For comparison, these simulated results are compared with the result of the flow visualization. Lift and drag coefficients are also calculated. A high degree of similarity in flow patterns between the numerical and experimental results have been achieved for two cylinders in tandem, a side by side and a staggered arrangement.

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What this paper is about

The surface vorticity method based on the vortex shedding, vorticity convection and diffusion was employed to simulate two cylinders in various arrangements in subcritical Reynolds numbers. For visualization, a computer graphic system is used to display the result in terms of vorticity distribution and velocity vector. For comparison, these simulated results are compared with the result of the flow visualization. Lift and drag coefficients are also calculated. A high degree of similarity in flow patterns between the numerical and experimental results have been achieved for two cylinders in tandem, a side by side and a staggered arrangement.

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Available abstract

The surface vorticity method based on the vortex shedding, vorticity convection and diffusion was employed to simulate two cylinders in various arrangements in subcritical Reynolds numbers. For visualization, a computer graphic system is used to display the result in terms of vorticity distribution and velocity vector. For comparison, these simulated results are compared with the result of the flow visualization. Lift and drag coefficients are also calculated. A high degree of similarity in flow patterns between the numerical and experimental results have been achieved for two cylinders in tandem, a side by side and a staggered arrangement.

Key concepts: Vorticity, Reynolds number, Mechanics, Vortex, Flow visualization, Vortex shedding, Flow (mathematics), Lift (data mining)

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