Pulsatile Flow of Two-Fluid Nonlinear Models for Blood Flow through Catheterized Arteries: A Comparative Study

Figure 3

Variation of plug-flow velocity with catheter radius ratio for different fluid models with $R_1=0.95\text{,}$$\alpha ={\alpha }_H={\alpha }_C=0.5$ and $A=0.2$. For all the two-fluid models, the plug-flow velocity decreases nonlinearly when the catheter radius ratio k increases from 0.1 to 0.3 and then it decreases linearly when the catheter radius ratio increases further from 0.3 to 0.6. The plug-flow velocity is maximum for the two-fluid power-law model and minimum for the two-fluid Casson model and, the plug-flow velocity for the two-fluid H-B model is higher than that of the two-fluid Casson model. The plug-flow velocity decreases slightly with the increase of the power-law index n.