Abstract
In this paper we focus on 3D simulation of unsteady wake flow behind a circular cylinder. We show that in addition to accurate formulations and sufficiently-refined meshes, efficient computing methods are essential components of an effective simulation strategy. We use the Multi-Domain Method (MDM) we developed recently in computation of two cases. At Reynolds number 300, we demonstrate how the MDM enables us to use highly-refined meshes to capture wake patterns which we otherwise cannot fully represent. At Reynolds number 140, we show that with the MDM we can extend our computations sufficiently downstream, and with sufficient accuracy, to successfully capture the second phase of the Karman vortex street, which has been observed in laboratory experiments, and which has double the spacing between the vortices compared to the first phase.
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Yasuo Osawa: He received his M.S. from Tokyo Institute of Technology in 1988, and his Ph.D. from University of Minnesota in 1999. He is a visiting scholar at Rice University, and a staff engineer at Bridgestone Corp.
Tayfun Tezduyar: He received his Ph.D. from Caltech in 1982. He joined University of Houston as Assistant Professor in 1983 and University of Minnesota as Associate Professor in 1987. At Minnesota he was promoted to Professor in 1991 and was named a Distinguished McKnight University Professor in 1997. He was the Director of the Army HPC Research Center during the period 1994-1998. In July 1998 he was named the James F. Barbour Professor in Engineering at Rice University, and has been the Chairman of Mechanical Engineering and Materials Science since 1999. He holds a 1986 Presidential Young Investigator Award and was elected as a Fellow of the ASME in 1994. He received the 1997 Computational Mechanics Award of the Japan Society of Mechanical Engineers, the 1997 Computational Fluid Dynamics Award of the US Association of Computational Mechanics, and the 1998 Computational Mechanics Award of the International Association of Computational Mechanics.
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Osawa, Y., Tezduyar, T. 3D simulation and visualization of unsteady wake flow behind a cylinder. J Vis 2, 127–134 (1999). https://doi.org/10.1007/BF03181515
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DOI: https://doi.org/10.1007/BF03181515