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Numerical modelling of shear-thinning non-Newtonian flow in compliant vessels |
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| Authors: | Anna Zaušková Mária Lukáčová-Medvid'ová |
| Institution: | 1. Institute of Numerical Simulation, Hamburg University of Technology, Hamburg, Germany
Department. of Mathematical Analysis and Numerical Mathematics, Comenius University, Bratislava, Slovakia;2. Institute of Numerical Simulation, Hamburg University of Technology, Hamburg, Germany |
| Abstract: | We present recent results on numerical modelling of non-Newtonian flow in two-dimensional compliant vessels with application in hemodynamics. Two models of the shear-thinning non-Newtonian fluids are considered and compared with the Newtonian model. For the structure problem the generalized string equation for radial symmetric tubes is used and extended to a stenosed vessel. A global iterative approach is used to approximate the fluid-structure interaction. At the end we present numerical experiments for selected non-Newtonian models, comparisons with the Newtonian model and the hemodynamic wall parameters: the wall shear stress and the oscillatory stress index. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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