Abstract
Blood flow simulations can be improved by integrating known data into the numerical modeling approach. Data Assimilation techniques based on a variational formulation play an important role in this issue. We propose a non-linear optimal control problem to reconstruct the blood flow profile from partial observations of known data in different geometries. Blood flow is assumed to behave as a homogeneous fluid with non-Newtonian inelastic shear-thinning behavior or, to simplify, blood flow is governed by the Navier-Stokes equations. Using a Discretize then Optimize (DO) approach, we solve a non-linear optimal control problem and present numerical results that indicate its robustness with respect to different idealized geometries and measured data. Blood flow in real vessels will also be considered, including the discussion of particular clinical cases.
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Acknowledgements
This work was partially supported by FCT—Fundação para a Ciência e a Tecnologia through the project UID/Multi/04621/2013 of the CEMAT—Center for Computational and Stochastic Mathematics, IST, ULisboa—Portugal, project EXCL/MAT-NAN/0114/2012, and the grant SFRH/BPD/109574/2015.
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Sequeira, A., Tiago, J., Guerra, T. (2018). Boundary Control Problems in Hemodynamics. In: Mondaini, R. (eds) Trends in Biomathematics: Modeling, Optimization and Computational Problems. Springer, Cham. https://doi.org/10.1007/978-3-319-91092-5_3
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DOI: https://doi.org/10.1007/978-3-319-91092-5_3
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