A cell-based smoothed finite element model for non-Newtonian blood flow

被引:4
作者
Liu, Mingyang [1 ,3 ]
Gao, Guangjun [1 ]
Khoo, Boo Cheong [3 ]
He, Zhenhu [2 ]
Jiang, Chen [1 ]
机构
[1] Cent South Univ, Sch Traff & Transportat Engn, Key Lab Traff Safety Track, Minist Educ, Changsha 410075, Peoples R China
[2] Cent South Univ, Xiangya Hosp 3, Dept Radiol, Changsha 410013, Peoples R China
[3] Natl Univ Singapore, Dept Mech Engn, 9 Engn Dr 1, Singapore 117575, Singapore
基金
中国国家自然科学基金;
关键词
Non-Newtonian flow; Smoothed Finite Element Method (S-FEM); Hemodynamics; Streamline Upwind Petrov-Galerkin (SUPG); Stabilized Pressure Gradient Projection  (SPGP); NAVIER-STOKES EQUATIONS; FRACTIONAL-STEP METHOD; GALERKIN METHOD; FEM; FORMULATION; INTEGRATION; MECHANICS; ALGORITHM; TRANSPORT; ARTERY;
D O I
10.1016/j.amc.2022.127480
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Smoothed Finite Element Method (S-FEM) has drawn increasing attention in the field of computational fluid dynamics (CFD) and the present work seeks to make further contri-bution to this growing field of S-FEM by simulating for the non-Newtonian blood flow. This investigation took the form of Streamline Upwind Petrov-Galerkin in conjunction with Stabilized Pressure Gradient Projection (SUPG/SPGP) to alleviate the spatial oscilla-tion and instability problems. The validation of the cell-based S-FEM (CS-FEM) combined with SUPG/SPGP was carried out by the blood flow over a backward-facing step. The per-formances of the presented method were explored by the blood flow in the carotid bifur-cation and blood flow in the intracranial segment of internal carotid artery. Impressively, the results exhibit good features of the CS-FEM on solving severely distorted mesh vis-a-vis the standard finite element method (FEM). The presented method could realize the accurate prediction in the mentioned complex blood flows as the same as Finite Volume Method software STAR-CCM + .(c) 2022 Published by Elsevier Inc.
引用
收藏
页数:22
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