A study of non-Newtonian aspects of blood flow through stenosed arteries and its applications in arterial diseases.
Blood flow through a stenosed artery has been investigated in this paper. Blood has been represented by a non-Newtonian fluid obeying Herschel-Bulkley equation. This model has been used to study the influence of the fluid behaviour index n, shear-dependent nonlinear viscosity K and the yield stress tau H in blood flow through stenosed arteries. The variation of the wall shear stress and the flow resistance with n, K and tau H has been shown graphically. It is observed that the wall shear stress and the flow resistance increase in Herschel-Bulkley fluid in comparison with corresponding Newtonian fluid. It is of interest to note that, in the present model, the thickness of the plug core varies with the axial distance z in the stenotic region. Finally, some biological implications of the present model for some arterial diseases have been briefly discussed.
D001157:Arterial Occlusive Diseases / Q000503:physiopathology*; D001158:Arteries / Q000503:physiopathology; D001696:Biomechanical Phenomena; D001783:Blood Flow Velocity; D003251:Constriction, Pathologic; D006801:Humans; D008433:Mathematics; D008954:Models, Biological; D009203:Myocardial Infarction / Q000503:physiopathology; D012212:Rheology; D014652:Vascular Diseases / Q000503:physiopathology