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PubMed · 12122256

Time-accurate, parallel, multi-zone, multi-block solver to study the human cardio-vascular system.

Mehran Tadjfar·Ryutaro Himeno
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Abstract

A parallel, time-accurate flow solver is devised to study the human cardio-vascular system. The solver is capable of dealing with moving boundaries and moving grids. It is designed to handle complex, three-dimensional vascular systems. The computational domain is divided into multiple block subdomains. At each cross section the plane is divided into twelve sub-zones to allow flexibility for handling complex geometries and, if needed, appropriate parallel data partitioning. The unsteady, three-dimensional, incompressible Navier-Stokes equations are solved numerically. A second-order in time and third-order upwind finite volume method for solving time-accurate incompressible flows based on pseudo-compressibility and dual time-stepping technique is used. For parallel execution, the flow domain is partitioned. Communication between the subdomains of the flow on Riken's VPP/700E supercomputer is implemented using MPI message-passing library. A series of numerical simulations of biologically relevant flows is used to validate this code.

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Biomechanical PhenomenaComputational BiologyComputer SimulationHemorheologyHumansModels, CardiovascularJournal Article

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Mehran Tadjfar, Ryutaro Himeno. 2002. Time-accurate, parallel, multi-zone, multi-block solver to study the human cardio-vascular system.. https://pubmed.ncbi.nlm.nih.gov/12122256/

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