Time-accurate Navier-Stokes computations of unsteady flows - The Karman vortex street

Dougherty, N. S.; Holt, James B.; Liu, B.; O'Farrell, Joanne

doi:10.2514/6.1989-144

27th Aerospace Sciences Meeting 1989

DOI: 10.2514/6.1989-144

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Time-accurate Navier-Stokes computations of unsteady flows - The Karman vortex street

N. S. Dougherty

James B. Holt

B. Liu

et al.

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Cited by 4 publications

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Numerical solutions for impulsively started and decelerated viscous flow past a circular cylinder

Wang

Dalton

1991

Numerical Methods in Fluids

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SUMMARYA finite difference study of the unsteady two-dimensional flow past a circular cylinder has been conducted using vorticity and streamfunction as the dependent variables. The two cases considered were impulsively started and decelerated flows. The impulsively started problem was considered to validate the method and has yielded results which agree quite closely with existing results from both calculations and experiments. The decelerated flow analysis produced results which can be explained in terms of induced velocity effects from existing wake vortices for both suddenly stopped and uniformly decelerated flows.

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Numerical solutions for impulsively started and decelerated viscous flow past a circular cylinder

Wang

Dalton

1991

Numerical Methods in Fluids

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Fluctuating lift on a circular cylinder: review and new measurements

Norberg

2003

Journal of Fluids and Structures

946

411

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Mass Transfer around a Cold Cylinder with Condensation of Vapor (1st Report)

Fukiba¹,

Satô²,

Tsuboi³

et al. 2005

JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCE

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A fundamental study for frost formation around a single cold cylinder was conducted using an experimental and numerical method. We focused on the mass transfer around the cylinder under the condition where phase change of the vapor in the flow occurs. By the experimental study, the mass transfer rate on the cold surface of the cylinder at a constant surface temperature (200-250 K) was measured. The results show that the mass transfer rate decreases according to the decrease of the wall temperature below 230 K, while it increases above 230 K. This phenomenon can not be expressed by the common equation of Sherwood number in which the phase change of the vapor (condensation) is excluded. In the numerical study, we calculated the flow around the cylinder including the phase change of the vapor. The scheme for compressible flow was modified to be able to solve lower speed flow. As a result of the calculation we obtain same tendency as that of the experiment that the mass flux decreases at low temperatures where the phase change occurs.

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Time-accurate Navier-Stokes computations of unsteady flows - The Karman vortex street

Cited by 4 publications

References 1 publication

Numerical solutions for impulsively started and decelerated viscous flow past a circular cylinder

Numerical solutions for impulsively started and decelerated viscous flow past a circular cylinder

Fluctuating lift on a circular cylinder: review and new measurements

Mass Transfer around a Cold Cylinder with Condensation of Vapor (1st Report)

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