THE STUDY OF KINEMATICS AND DYNAMICS OF OSCILLATING LAMINAR FLOW ABOUT A CYLINDER

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SAEIDI M.S.; SAGHAFIAN M.

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Journal: ESTEGHLAL Year:2001 | Volume:20 | Issue:1 Page(s): 151-173

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Information Journal Paper

Title

THE STUDY OF KINEMATICS AND DYNAMICS OF OSCILLATING LAMINAR FLOW ABOUT A CYLINDER

Author(s)

SAEIDI M.S. | SAGHAFIAN M. | Issue Writer Certificate

Keywords

OSCILLATING FLOWQ2

LAMINAR FLOW ABOUT A CYLINDERQ4

NUMERICAL SOLUTIONQ2

Abstract

New Page 1 In this paper, the oscillating two-dimensional laminar flow about a cylinder and the oscillation of a cylinder in still water are studied. A finite volume method is applied to solve the Navier Stokes equations using SIMPLEC algorithm on a body fitted co-located O-type grid. In this study, the non-dimensional flow numbers, Keulegan-Carpenter and Stokes numbers are chosen over a range where different laminar flow regimes are normally three-dimensional The results of this simulation and comparison with numerical and experimental works indicate the good capability of this two-dimensional model in showing the various regimes of. flow patterns and vortex shedding. Considering the forces exerted on the cylinder, this study shows that in cases where the flow is of a regular type, there is a good match between longitudinal force presented by this work and the one calculated through. Morrisons equation. But for irregular flows where the flow pattern changes in each cycle, there is less overlap and the accuracy of Morrisons equation is reduced. Studying the time variation of the transversal force gives accurate information about the vortex shedding and its frequency in each cycle and mode changing. Since the flow mode changes continuously with time, the average of transversal and longitudinal forces on consecutive cycles is not a good representation of the force exerted on the cylinder. On the other hand, the model has satisfactorily reproduced the time variation of the tranversal and longitudinal forces of apure mode, matching the experimental results.

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APA: Copy

SAEIDI, M.S., & SAGHAFIAN, M.. (2001). THE STUDY OF KINEMATICS AND DYNAMICS OF OSCILLATING LAMINAR FLOW ABOUT A CYLINDER. ESTEGHLAL, 20(1), 151-173. SID. https://sid.ir/paper/5906/en

Vancouver: Copy

SAEIDI M.S., SAGHAFIAN M.. THE STUDY OF KINEMATICS AND DYNAMICS OF OSCILLATING LAMINAR FLOW ABOUT A CYLINDER. ESTEGHLAL[Internet]. 2001;20(1):151-173. Available from: https://sid.ir/paper/5906/en

IEEE: Copy

M.S. SAEIDI, and M. SAGHAFIAN, “THE STUDY OF KINEMATICS AND DYNAMICS OF OSCILLATING LAMINAR FLOW ABOUT A CYLINDER,” ESTEGHLAL, vol. 20, no. 1, pp. 151–173, 2001, [Online]. Available: https://sid.ir/paper/5906/en

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