Linge Fabian, Hye Md Abdul, Paul Manosh C
a CFD Group, System, Power & Energy Research Division, School of Engineering, University of Glasgow , Glasgow G12 8QQ , UK.
Comput Methods Biomech Biomed Engin. 2014 Nov;17(15):1727-37. doi: 10.1080/10255842.2013.765411. Epub 2013 Mar 12.
Pulsatile spiral blood flow in a modelled three-dimensional arterial stenosis, with a 75% cross-sectional area reduction, is investigated by using numerical fluid dynamics. Two-equation k-ω model is used for the simulation of the transitional flow with Reynolds numbers 500 and 1000. It is found that the spiral component increases the static pressure in the vessel during the deceleration phase of the flow pulse. In addition, the spiral component reduces the turbulence intensity and wall shear stress found in the post-stenosis region of the vessel in the early stages of the flow pulse. Hence, the findings agree with the results of Stonebridge et al. (2004). In addition, the results of the effects of a spiral component on time-varying flow are presented and discussed along with the relevant pathological issues.
利用数值流体动力学方法，对横截面面积减小75%的模拟三维动脉狭窄中的脉动螺旋血流进行了研究。采用两方程k-ω模型对雷诺数为500和1000的过渡流进行模拟。研究发现，螺旋分量在血流脉冲的减速阶段增加了血管内的静压。此外，螺旋分量降低了血流脉冲早期血管狭窄后区域的湍流强度和壁面剪应力。因此，这些发现与斯通布里奇等人（2004年）的结果一致。此外，还给出并讨论了螺旋分量对时变血流影响的结果以及相关的病理问题。
