Numerical Investigation of Vortex Shedding Modes of Flow past Two Circular Cylinders in Side-by-Side Using Immersed Boundary Method

Abstract:

The vortex shedding modes of flow past two circular cylinders in side-by-side arrangement are investigated numerically in this paper. The simulations are carried out using a ghost cell immersed boundary method which imposes the boundary condition through reconstruction of the local velocity field near the immersed boundary. The two-dimensional unsteady incompressible Navier-Stokes equations are solved using an implicit fractional step method based on cell-center, collocated arrangement of the primary variables. Vorticity contours of the flow around the cylinders and force time histories are presented. Anti-phase and in-phase vortex shedding modes were found to exist in the flow simulation. These results of simulations were in agreement with phenomena observed in experiment and numerical results of previous researchers.

• Periodical: Applied Mechanics and Materials (Volumes 275-277)
• Pages: 482-485
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.275-277.482
• Online since: January 2013
• Authors: Li Wei Song, Song Ping Wu
• Keywords: Computational Fluid Dynamics (CFD), Immersed Boundary Method, Numerical Simulation, Vortex Shedding Mode

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