In a numerical model of blood flow through a diseased artery, wall shear stress increased with greater porous parameter, stenosis size, and stenosis length, but decreased as the stenosis shape parameter increased.
A mathematical model demonstrates that wall shear stress in a stenosed artery increases with porous parameter, stenosis size, and length, but decreases with stenosis shape parameter, highlighting significant differences from rigid wall models.
This study focuses on the behavior of blood flow through diseased artery in the presence of porous effects. The laminar, incompressible, fully developed, non-Newtonian in an artery having axially non-symmetric but radially symmetric stenosis is numerically studied. Here blood is represented as Herschel-Bulkley fluid model and flow model is shown by the Navier-Stokes and the continuity equations. Using appropriate boundary conditions, numerical expression for volumetric flow rate, pressure drop and wall shear stress have been derived. The expressions are computed numerically and results are presented graphically. The effects of porous parameter on wall shear stress, stenosis length, stenosis size and stenosis shape parameter are discussed. The wall shear stress increases as the porous parameter, stenosis size and stenosis length increases, but as the stenosis shape parameter increases, the wall shear stress decreases. The work shows that the results obtained from the porous wall model are significantly different from those obtained by the rigid wall model.
Shah et al. (Wed,) conducted a other in Atherosclerosis / Stenosed artery. Porous wall model vs. Rigid wall model was evaluated on Wall shear stress. In a numerical model of blood flow through a diseased artery, wall shear stress increased with greater porous parameter, stenosis size, and stenosis length, but decreased as the stenosis shape parameter increased.