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Rajat Mittal (Johns Hopkins University) From Insect Flight to Heart Murmurs: Computational
 

Summary: Colloquium
Rajat Mittal (Johns Hopkins University)
From Insect Flight to Heart Murmurs: Computational
Modeling and Analysis of Complex Biological Flows
Tuesday 1 November, Citadel H-327, 15:45-16:30
Complex three-dimensional moving boundaries and fluid-
structure interaction are hallmarks of biological configura-
tions. Computational modeling of such flows however poses
severe challenges for conventional modeling approaches and
the last decade has seen a tremendous rise in the popularity of
immersed-boundary methods (IBM) for modeling such flows.
The key feature of the immersed boundary method is that
simulations with complex moving boundaries can be carried out on stationary, body non-
conformal Cartesian grids. This approach eliminates the need for complicated re-meshing
algorithms that are usually employed with conventional body-conformal methods. I will
describe the salient features of a versatile sharp-interface immersed-boundary method
which is especially well suited for biological flows. The IB method developed here is accu-
rate, efficient, scalable and fast, and can handle extremely complex, moving geometries
with relative ease. The solver is coupled to a powerful finite-element based solid dynamics
solvers as well as a low-Mach number acoustics solver, enabling multi-physics simulations

  

Source: Al Hanbali, Ahmad - Department of Applied Mathematics, Universiteit Twente

 

Collections: Engineering