Key result
Finite element numerical procedure simulates a complete heartbeat cycle in a realistic 3D left heart.
The study demonstrates a computational finite element model capable of simulating solid-fluid interactions during a complete heartbeat cycle in a realistic left heart model.
Demonstrates feasibility of realistic left heart simulation; extends computational cardiology but leaves open empirical validation.
In this report we present basic steps in the 3D reconstruction process of DICOM images and application of our finite element (FE) numerical procedure for loose coupling solid-fluid interaction, to simulate a complete heartbeat cycle for a realistic model of the left heart side. Passive mechanical stresses are calculated using an orthotropic material model based on the experimental investigation of passive material properties of the myocardium, while active stresses are calculated using the Hunter material model. The basic equations for solid mechanics, fluid dynamics, and muscle activation are summarized and model applicability is illustrated on a complex realistic model which includes a left atrium, ventricle, mitral and aortic valves (which serve as fluid domain) coupled with solid wall with realistic fiber directions.
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Simić et al. (2021) studied this question. Finite element numerical procedure for solid-fluid interaction was evaluated. A finite element numerical procedure for solid-fluid interaction was applied to simulate a complete heartbeat cycle in a realistic 3D model of the left heart.
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