A Partial Domain Approach to Enable Aortic Flow Simulation Without Turbulent Modeling
| Autor: | Christian Binter, Gábor Székely, Christine Tanner, Aymen Laadhari, Taha Sabri Koltukluoğlu, Sebastian Kozerke, Sven Hirsch |
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| Rok vydání: | 2015 |
| Předmět: |
Computer simulation
Computer science Turbulence business.industry Physics::Medical Physics Hemodynamics Laminar flow Blood flow Mechanics Computational fluid dynamics Domain (software engineering) Physics::Fluid Dynamics Boundary layer 610: Medizin und Gesundheit Flow (mathematics) Arterial wall Boundary value problem business Simulation |
| Zdroj: | Lecture Notes in Computer Science ISBN: 9783319245706 MICCAI (2) |
| Popis: | Analysis of hemodynamics shows great potential to provide indications for the risk of cardiac malformations and is essential for diagnostic purposes in clinical applications. Computational fluid dynamics (CFD) has been established as a valuable tool for the detailed characterization of volumetric blood flow and its effects on the arterial wall. However, studies concentrating on the aortic root have to take the turbulent nature of the flow into account while no satisfactory solution for such simulations exists today. In this paper we propose to combine magnetic resonance imaging (MRI) flow acquisitions, providing excellent data in the turbulent regions while showing only limited reliability in the boundary layer, with CFD simulations which can be used to extrapolate the measured data towards the vessel wall. The solution relies on a partial domain approach, restricting the simulations to the laminar flow domain while using MRI measurements as additional boundary conditions to drive the numerical simulation. In this preliminary work we demonstrate the feasibility of the method on flow phantom measurements while comparing actually measured and simulated flow fields under straight and spiral flow regimes. |
| Databáze: | OpenAIRE |
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