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Effects of fluid recirculation on mass transfer from the arterial surface to flowing blood 被引量:1
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作者 Zhi-Guo Zhang Xi-Wen Zhang Ying-Xi Liu 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2012年第3期904-910,共7页
The effect of disturbed flow on the mass trans- fer from arterial surface to flowing blood was studied nu- merically, and the results were compared with that of our previous work. The arterial wall was assumed to be v... The effect of disturbed flow on the mass trans- fer from arterial surface to flowing blood was studied nu- merically, and the results were compared with that of our previous work. The arterial wall was assumed to be vis- coelastic and the blood was assumed to be incompressible and non-Newtonian fluid, which is more close to human arte- rial system. Numerical results indicated that the mass trans- fer from the arterial surface to flowing blood in regions of disturbed flow is positively related with the wall shear rates and it is significantly enhanced in regions of disturbed flow with a local minimum around the reattachment point which is higher than the average value of the downstream. There- fore, it may be implied that the accumulation of cholesterol or lipids within atheromatous plaques is not caused by the reduced efflux of cholesterol or lipids, but by the infiltration of the LDL (low-density lipoprotein) from the flowing blood to the arterial wall. 展开更多
关键词 Disturbed flow Arterial wall Mass transfer Atherosclerosis Wall shear rates
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