title: A benchmark study of numerical schemes for one-dimensional arterial blood flow modelling.
abstract: Haemodynamical simulations using one-dimensional (1D) computational models exhibit many of the features of the systemic circulation under normal and diseased conditions. Recent interest in verifying 1D numerical schemes has led to the development of alternative experimental setups and the use of three-dimensional numerical models to acquire data not easily measured in vivo. In most studies to date, only one particular 1D scheme is tested. In this paper, we present a systematic comparison of six commonly used numerical schemes for 1D blood flow modelling: discontinuous Galerkin, locally conservative Galerkin, Galerkin least-squares finite element method, finite volume method, finite difference MacCormack method and a simplified trapezium rule method. Comparisons are made in a series of six benchmark test cases with an increasing degree of complexity. The accuracy of the numerical schemes is assessed by comparison with theoretical results, three-dimensional numerical data in compatible domains with distensible walls or experimental data in a network of silicone tubes. Results show a good agreement among all numerical schemes and their ability to capture the main features of pressure, flow and area waveforms in large arteries. All the information used in this study, including the input data for all benchmark cases, experimental data where available and numerical solutions for each scheme, is made publicly available online, providing a comprehensive reference data set to support the development of 1D models and numerical schemes.
authors.affiliation: Zienkiewicz Centre for Computational Engineering, College of Engineering, Swansea University, Swansea, SA2 8PP, UK.
authors.forename: Etienne
authors.initials: E
authors.lastname: Boileau
authors.affiliation: Zienkiewicz Centre for Computational Engineering, College of Engineering, Swansea University, Swansea, SA2 8PP, UK.
authors.forename: Perumal
authors.initials: P
authors.lastname: Nithiarasu
authors.affiliation: National Laboratory for Scientific Computing, LNCC/MCTI, Av. Getúlio Vargas 333, Petrópolis, Rio de Janeiro 25651-075, Brazil.|National Institute of Science and Technology in Medicine Assisted by Scientific Computing, INCT-MACC, Petrópolis, Rio de Janeiro, Brazil.
authors.forename: Pablo J
authors.initials: PJ
authors.lastname: Blanco
authors.affiliation: National Laboratory for Scientific Computing, LNCC/MCTI, Av. Getúlio Vargas 333, Petrópolis, Rio de Janeiro 25651-075, Brazil.|National Institute of Science and Technology in Medicine Assisted by Scientific Computing, INCT-MACC, Petrópolis, Rio de Janeiro, Brazil.
authors.forename: Lucas O
authors.initials: LO
authors.lastname: Müller
authors.affiliation: Department of Structural Engineering, Division of Biomechanics, Norwegian University of Science and Technology, Trondheim, Norway.
authors.forename: Fredrik Eikeland
authors.initials: FE
authors.lastname: Fossan
authors.affiliation: Department of Structural Engineering, Division of Biomechanics, Norwegian University of Science and Technology, Trondheim, Norway.
authors.forename: Leif Rune
authors.initials: LR
authors.lastname: Hellevik
authors.affiliation: Faculty of Health, Medicine and Life Sciences, Biomedical Engineering, Maastricht University Medical Centre, Maastricht, The Netherlands.
authors.forename: Wouter P
authors.initials: WP
authors.lastname: Donders
authors.affiliation: Faculty of Health, Medicine and Life Sciences, Biomedical Engineering, Maastricht University Medical Centre, Maastricht, The Netherlands.
authors.forename: Wouter
authors.initials: W
authors.lastname: Huberts
authors.affiliation: Division of Imaging Sciences and Biomedical Engineering, St. Thomas' Hospital, King's College London, London, SE1 7EH, UK.
authors.forename: Marie
authors.initials: M
authors.lastname: Willemet
authors.affiliation: Division of Imaging Sciences and Biomedical Engineering, St. Thomas' Hospital, King's College London, London, SE1 7EH, UK.
authors.forename: Jordi
authors.initials: J
authors.lastname: Alastruey
mesh_terms: D001013:Aorta, Thoracic / Q000502:physiology; D001158:Arteries / Q000502:physiology*; D019985:Benchmarking; D006439:Hemodynamics / Q000502:physiology; D006801:Humans; D008955:Models, Cardiovascular; D008962:Models, Theoretical
keywords: 1D arterial haemodynamics; 1D numerical schemes; benchmark test cases; pulse wave propagation