Elucidating the turbulence nature of the intracardiac flow: from medical images to multi-cycle Large Eddy Simulations

This brief article accompanies a fluid dynamics video presenting the results of a large-eddy simulation of the flow in a realistic left heart. The left heart geometry, from the pulmonary veins to the aortic root, is extracted from medical images and the endocardium movements are reconstructed throug...

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Bibliographic Details
Published in:arXiv.org 2013-10
Main Authors: Chnafa, Christophe, Mendez, Simon, Nicoud, Franck
Format: Article
Language:English
Subjects:
Computational fluid dynamics
Computer simulation
Deceleration
Fluid flow
Heart
Image reconstruction
Image registration
Large eddy simulation
Medical imaging
Simulation
Turbulence
Turbulent flow
Vortices
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Summary:This brief article accompanies a fluid dynamics video presenting the results of a large-eddy simulation of the flow in a realistic left heart. The left heart geometry, from the pulmonary veins to the aortic root, is extracted from medical images and the endocardium movements are reconstructed through image registration. Large-eddy simulations are thus performed in a patient-specific heart model, where the patient-specific movements of the geometry are prescribed. The flow obtained is intermittent, showing both in the left atrium and in the left ventricle turbulent spots correlated to flow decelerations.
ISSN:2331-8422