Computational techniques and validation of blood flow simulation

• Type: Article in International Scientific Journal
• Date: 2011

Authors

sousa, l (Author) FEUP; castro, c (Author) FEUP; antonio, c (Author) FEUP; chaves, r (Author) Other

Journal

Title: WSEAS Transactions on Biology and Biomedicine

Vol. 8

Pages: 145-155

ISSN: 1109-9518

Publisher: World Scientific and Engineering Academy and Society

Indexing

ISI Web of Knowledge

Scopus - 12 Citations

Scientific classification

FOS: Engineering and technology

CORDIS: Health sciences ; Technological sciences

Other information

Authenticus ID: P-008-0Y3

Abstract (EN): Plaque formation leading to stenosis and occlusion of arterial blood vessels causes altered flow conditions, such as separation and flow-reversal zones and plays an important role in the development of arterial diseases. Computational simulations of blood flow can help to understand the hemodynamics in blood vessels and to predict the outcomes of surgeries. The paper presents a three dimensional numerical method of steady and pulsatile blood flow simulation in arteries by the finite element method. In this study the biochemical and mechanical interactions between blood and vascular tissue are neglected and no-slip boundary conditions are considered at the artery wall. Velocity field is calculated by a mixed method using a smoothed deviatoric stress field in order to obtain an improvement of the finite element method performance. Stabilized finite element formulations to properly treat incompressible and high Reynolds number flows are presented. Velocity and wall shear stress fields are visualized for a better understanding of flow characteristics such as distributions of the flow pattern, stagnation flow and recirculation zones. Simulated results are compared and validated with literature data obtained from ultrasound measurements.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11