Three-dimensional modeling of flow and deformation in idealized mild and moderate arterial vessels

Xi Gu, Guan Heng Yeoh and Victoria Timchenko

Computer Methods in Biomechanics and Biomedical Engineering, 2016, vol. 19, issue 13, 1395-1408

Abstract: Three-dimensional numerical calculations of mild and moderate stenosed blood vessels have been performed. Large eddy simulation through a dynamic subgrid scale Smagorinsky model is applied to model the transitional and turbulent pulsatile flow. For the compliant stenosed model, fluid-structure interaction is realized through a two-way coupling between the fluid flow and the deforming vessel through the change in the external diameter due to the increment of circumferential pressure via a novel moving boundary approach. Model predictions compare very well against measured and numerical data for the centerline velocities, thickness of the flow separation zones and radial wall displacements.

Date: 2016
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DOI: 10.1080/10255842.2016.1145211

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