SIMULATION OF VORTEX SHEDDING PHENOMENON IN A 2-D FLOW OVER A SQUARED SECTION OBSTACLE INSIDE A CHANNEL, USING LATTICE BOLTZMANN METHOD

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ABDOLLAHI M.; ATEFI GH.A.

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Paper Information

Journal: Journal of Aerospace Mechanics Year:2012 | Volume:7 | Issue:4 (26) (FLUID MECHANICS AND AERODYNAMICS) Page(s): 51-63

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Title

SIMULATION OF VORTEX SHEDDING PHENOMENON IN A 2-D FLOW OVER A SQUARED SECTION OBSTACLE INSIDE A CHANNEL, USING LATTICE BOLTZMANN METHOD

Author(s)

ABDOLLAHI M. | ATEFI GH.A. | Issue Writer Certificate

Keywords

LATTICE-BOLTZMANN METHODQ1

VORTEX SHEDDINGQ2

STROUHAL NUMBERQ2

REYNOLDS NUMBERQ2

Abstract

In this paper, a model for simulation of 2-D flow around a square obstacle inside a channel has been obtained. Most researches have concentrated on the external flow around circular cylinders, while there are few researches for flow around square obstacle considering channel wall effects. In this work, the LATTICE-BOLTZMANN METHOD is applied, instead of solving non-linear Navier-Stokes equations. This method has conceptual differences and in which an algorithm is obtained, using discretization of the Boltzmann differential equation and virtual definition of fluid particles. This algorithm can be used to compute the flow macroscopic flow quantities. Simulations include different 2-D flow patterns around a squared section obstacle, presentation of an equation estimating recirculation length, evaluation of critical REYNOLDS NUMBER (related to VORTEX SHEDDING phenomena), estimation of VORTEX SHEDDING frequency, and computation of drag coefficient as a function of REYNOLDS NUMBER.

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APA: Copy

ABDOLLAHI, M., & ATEFI, GH.A.. (2012). SIMULATION OF VORTEX SHEDDING PHENOMENON IN A 2-D FLOW OVER A SQUARED SECTION OBSTACLE INSIDE A CHANNEL, USING LATTICE BOLTZMANN METHOD. AEROSPACE MECHANICS JOURNAL, 7(4 (26) (FLUID MECHANICS AND AERODYNAMICS)), 51-63. SID. https://sid.ir/paper/101708/en

Vancouver: Copy

ABDOLLAHI M., ATEFI GH.A.. SIMULATION OF VORTEX SHEDDING PHENOMENON IN A 2-D FLOW OVER A SQUARED SECTION OBSTACLE INSIDE A CHANNEL, USING LATTICE BOLTZMANN METHOD. AEROSPACE MECHANICS JOURNAL[Internet]. 2012;7(4 (26) (FLUID MECHANICS AND AERODYNAMICS)):51-63. Available from: https://sid.ir/paper/101708/en

IEEE: Copy

M. ABDOLLAHI, and GH.A. ATEFI, “SIMULATION OF VORTEX SHEDDING PHENOMENON IN A 2-D FLOW OVER A SQUARED SECTION OBSTACLE INSIDE A CHANNEL, USING LATTICE BOLTZMANN METHOD,” AEROSPACE MECHANICS JOURNAL, vol. 7, no. 4 (26) (FLUID MECHANICS AND AERODYNAMICS), pp. 51–63, 2012, [Online]. Available: https://sid.ir/paper/101708/en

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