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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.6
- 수록면
- 1 - 14 (14page)
- DOI
- 10.6112/kscfe.2017.22.2.001
이용수
초록· 키워드
오류제보하기
External and physiological loading of the cardiovascular system gives rise to complex mechanical interactions between the fluid(blood) and the solid(extensible vessel wall). An understanding of such fluid-structure interactions is critical to modeling and rendering the response of the cardiovascular system to these loads. Recent developments in code coupling techniques, including commercial codes, have generated numerical solution methodologies useful for studying cardiovascular fluid-structure interactions. This paper presents one approach for such fluid-structure interaction(FSI) problems by utilizing a mesh-based code coupling to ANSYS. This commercially available finite element code provides two separate fluid and structure solvers with a load-vector coupling. An iterative algorithm is employed to perform boundary parameter transfer, interface mapping, and remeshing. The Hagen-Poiseuille and Womersley flows in an elastic vessel are chosen as representative characteristic cardiovascular flows and numerical solutions from the FSI solver are compared to these analytical solutions. The calculation for the Womersley flow suggest that the velocity profiles for elastic wall conditions change considerably when the inertial force is dominant in the system. For practical application, the FSI solver is applied to elastic curved vessels with several sets of elastic moduli under a developing flow condition. The use of a FSI approach in such a conduit results in a significant increase of wall shear stress at the inner wall in the fluid domain and an orientation change of the maximum principal stress in line with the longitudinal direction along the vessel in the structural domain.
목차
1. Introduction
2. Numerical methods
3. Validation case studies
4. Application: Developing flow in an elastic curved vessel
5. Discussion
6. Conclusions
References
참고문헌 (23)
참고문헌 신청
[학술지(정기간행물)] - Quarteroni, A / 2000 / Computational vascular fluid dynamics: problems, models and methods / Computing and Visualization in Science 2 (4) : 163 ~ 197
[학술지(정기간행물)] - Ku, D.N / 1997 / Blood flow in arteries / Annual Review of Fluid Mechanics 29 (1) : 399 ~ 434
[학술지(정기간행물)] - Peskin, C.S / 1994 / Mechanical equilibrium determines the fractal fiber architecture of the aortic heart valve leaflets / American Journal of Physiology-Heart and Circulatory Physiology 266 (1) : H319 ~ H328
[단행본] - de Hart, J. / 2002 / Fluid-structure interaction in the aortic heart valve: a three-dimensional computational analysis / Technische Universiteit Eindhoven
[단행본] - / 2005 / ANSYS Release 10.0, ANSYS theory reference / ANSYS, Inc
[학술지(정기간행물)] - Ku, D.N / 1997 / Blood flow in arteries / Annual Review of Fluid Mechanics 29 (1) : 399 ~ 434
[학술지(정기간행물)] - Peskin, C.S / 1994 / Mechanical equilibrium determines the fractal fiber architecture of the aortic heart valve leaflets / American Journal of Physiology-Heart and Circulatory Physiology 266 (1) : H319 ~ H328
[단행본] - de Hart, J. / 2002 / Fluid-structure interaction in the aortic heart valve: a three-dimensional computational analysis / Technische Universiteit Eindhoven
[단행본] - / 2005 / ANSYS Release 10.0, ANSYS theory reference / ANSYS, Inc
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