Work

Overset meshing in combination with novel blended weak-strong fluid-structure interactions for simulations of a translating valve in series with a second valve

Year: 2023

Type: article

Abstract: Mechanical circulatory support (MCS) devices can bridge the gap to transplant whilst awaiting a viable donor heart. The Realheart Total Artificial Heart is a novel positive-displacement MCS that generates pulsatile flow via bileaflet mechanical valves. This study developed a combined computational fluid dynamics and fluid-structure interaction (FSI) methodology for simulating positive displacement bileaflet valves. Overset meshing discretised the fluid domain, and a blended weak-strong coupling FSI algorithm was combined with variable time-stepping. Four operating conditions of relevant stroke lengths and rates were assessed. The results demonstrated this modelling strategy is stable and efficient for modelling positive-displacement artificial hearts.

Source: Computer Methods in Biomechanics & Biomedical Engineering

DOI: 10.1080/10255842.2023.2199903

Authors: J. Bornoff, H.S. Gill, A. Najar, I.L. Perkins, A.N. Cookson, K.H. Fraser

Institutions: University of Bath, Scandinavian Real Heart AB (Sweden)

Language: English

Topic: Mechanical Circulatory Support Devices

Subfield: Cardiology and Cardiovascular Medicine

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: hybrid

Funder: Scandinavian Real Heart