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| Simulating the dynamics of fluid-cylinder interactions |
| PAN Tsorng-Whay, GLOWINSKI Roland, JOSEPH Daniel D. |
| Department of Mathematics, University of Houston, Houston, Texas 77204-3008, USA; Department of Aerospace Engineering and Mechanics, University of Minnesota, Minnesota, MN 55455, USA |
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Abstract We present the simulation of the dynamics of fluid-cylinder interactions in a narrow three-dimensional channel filled with a Newtonian fluid, using a Lagrange multiplier based fictitious domain methodology combined with a finite element method and an operator splitting technique. As expected, a settling truncated cylinder turns its broadside perpendicular to the main stream direction and the center of mass moves to the central axis of the channel. In the case of two truncated cylinders, they first move around each other for a while and then stay together in a ?°T?± shape. After the ?°T?± shape has been formed for a long enough time, we found no vortex shedding behind the cylinders. When simulating the fluidization of 60 truncated cylinders, we captured the features of interactions among fluidized cylinders as observed in experiments
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Received: 07 October 2004
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