Journal of Northeastern University Natural Science ›› 2020, Vol. 41 ›› Issue (1): 148-152.DOI: 10.12068/j.issn.1005-3026.2020.01.026

• Biologic Engineering • Previous Articles    

Rheological Characteristics Analysis of Blood Flow at the Site of Vascular Lesion Based on CFD

LU Ye, ZHANG Shu-sheng   

  1. School of Energy and Power Engineering, Shandong University, Jinan 250061, China.
  • Received:2019-04-29 Revised:2019-04-29 Online:2020-01-15 Published:2020-02-01
  • Contact: ZHANG Shu-sheng
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Abstract: In order to study the influence of vasculopathy on hemodynamic characteristics of blood flow, the blood flow characteristics were studied before and after changes took place in blood vessel structure. A method of comparative study focusing on the blood flow characteristics in artery with and without atherosclerosis was proposed. The geometry model was established based on data taken from tomography scan. Geomagic Studio was used to convert the pathological blood vessel model back into healthy vessel model. The blood flow characteristics were investigated based on the condition of pulsatile blood stream flowing in elastic vessel. The blood flow field in bifurcation region was simulated with ANSYS software adopting Newtonian mechanical model. Result indicates that the lesion site on vessel wall suffers larger shear stress. Secondary flow occurs in the distal end of lesion site with low flow velocity, low shear stress and higher pressure difference, which indicates that the atherosclerosis will be further affected.

Key words: atherosclerosis, hemodynamics, artery bifurcation, computational fluid dynamics(CFD);vasculopathy

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