Proposition of an outflow boundary approach for carotid artery stenosis CFD simulation

Yu Zhang, Toyoki Furusawa, Sheau Fung Sia, Mitsuo Umezu, Yi Qian

    Research output: Contribution to journalArticle

    14 Citations (Scopus)

    Abstract

    The purpose of this study was to propose an innovative approach of setting outlet boundary conditions for the computational fluid dynamics (CFD) simulation of human common carotid arteries (CCAs) bifurcation based on the concept of energy loss minimisation at flow bifurcation. Comparisons between this new approach and previously reported boundary conditions were also made. The results showed that CFD simulation based on the proposed boundary conditions gave an accurate prediction of the critical stenosis ratio of carotid arteries (at around 65%). Other boundary conditions, such as the constant external pressure (P = 0) and constant outflow ratio, either overestimated or underestimated the critical stenosis ratio of carotid arteries. The patient-specific simulation results furthermore indicated that the calculated internal carotid artery flow ratio at CCA bifurcation (61%) coincided with the result obtained by clinical measurements through the use of Colour Doppler ultrasound.

    Original languageEnglish
    Pages (from-to)488-494
    Number of pages7
    JournalComputer Methods in Biomechanics and Biomedical Engineering
    Volume16
    Issue number5
    DOIs
    Publication statusPublished - 2013 May

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    Computational fluid dynamics
    Boundary conditions
    Bifurcation (mathematics)
    Computer simulation
    Energy dissipation
    Ultrasonics
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    Keywords

    • carotid artery stenosis
    • cerebralvascular flows
    • computational fluid dynamics
    • energy loss

    ASJC Scopus subject areas

    • Bioengineering
    • Biomedical Engineering
    • Computer Science Applications
    • Human-Computer Interaction

    Cite this

    Proposition of an outflow boundary approach for carotid artery stenosis CFD simulation. / Zhang, Yu; Furusawa, Toyoki; Sia, Sheau Fung; Umezu, Mitsuo; Qian, Yi.

    In: Computer Methods in Biomechanics and Biomedical Engineering, Vol. 16, No. 5, 05.2013, p. 488-494.

    Research output: Contribution to journalArticle

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