BLOOD FLOW THROUGH THE CIRCULATORY SYSTEM ELEMENT AFFECTED BY NUMBER OF STENOTIC DEPOSITIONS
Destruction of the elements of the blood circulatory system may in many cases cause many dangerous diseases Due to small characteristic size of the element of the circulatory system (1-3 mm) and moderate values of Reynolds number (0.1-300), non-Newtonian properties of blood appear at the flow in the affected cells of the circulatory system. Rheological constitutive relation FENE - P is used for the flow modeling which predicts rheological properties of the blood such as the viscosity anomaly and elastic effects. In this paper is examined the effect of the rigidity of the walls of blood vessels and investigated the effect of double stenotic lesions on the blood flow. An element of the circulatory system with one and a double stenotic lesion with 50 % narrowing was chosen as a model case. As a result of the simulation, streamlines were obtained, the distribution of the principal stresses difference (PSD) in the most significant places of the affected elements of the circulatory system.