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On the modeling and computation of Immersed Boundaries in Complex Fluids

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Publicado em Tue Dec 18 11:50:27 GMT-03:00 2012
Formatos:  FLV (640 X 360 px)

The interaction of flexible free-to-move boundaries with non-Newtonian (complex) fluids is receiving increased attention. Accurately capturing the coupled dynamics of this intricate flow-structure interaction is a challenging computational problem. The Immersed Boundary (IB) Method provides a versatile tool for this type of systems. However, even in the Newtonian fluid case, strong tangential forces on the immersed structures induce a well-known, severe time-step restriction for explicit discretizations. Moreover, as the number of immersed elements increases, the direct evaluation of the flow-structure interaction becomes computationally expensive.