Simulating the Blood Flow for the Aorta with a Stenosis
This paper treated the blood flow simulation for an aorta with the stenosis based on a clinical example. The physical model of the aorta was established by using the CT pictures. Based on the Reynolds averaged Navier-Stokes equations, three-dimensional turbulent flow were analyzed for the aorta. The numerical results indicated that: (1) the blood flow condition was greatly affected by the stenosis of an aorta. Both the steady and unsteady calculation had shown the same tendency as the clinical measurement; (2)with the existence of the stenosis, the velocity at the aorta greatly increased at the stenotic site. The large pressure-difference between upstream and downstream of the stenotic site, and wall shear stress larger than the critical value occurred; (3)The unsteady calculation depicted that the waves for the section-averaged velocity at the stenosis, the pressure-difference between the upstream and downstream of the stenosis, and the wall shear stress had different components, and their main pulses had different frequency. Those results provide very useful references for clinical treatments.
stenosis aorta wall shear stress pressure difference CFD
Ying Li Xianwu Luo Mingkui Zhang Yao Zhang Shuhong Liu Hongyuan Xu
State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China The First Hospital of Tsinghua University, Chaoyang District, Beijing 100016, China
国际会议
The Fourth International Symposium on Fluid Machinery and Fluid Engineering(第四届流体机械与流体工程国际会议)
北京
英文
221-226
2008-11-25（万方平台首次上网日期，不代表论文的发表时间）