The Fluid Mechanics of Large Blood Vessels

Mechanics of Blood Vessels

Pulsatile Flow of Hershel- Bulkley Fluid in Tapered Blood Vessels

The present paper sheds some light on investigating the effect of pulsatility on flow through a tapered artery. Blood has been represented by a nonNewtonian fluid obeying Herschel-Bulkley equation. Using the Reynolds number as the perturbation parameter, a perturbation technique is adopted to solve the resulting quasi-steady non-linear coupled implicit system of differential equations. Analytic...

Waves and fluid–solid interaction in stented blood vessels

This paper focuses on the modelling of fluid-structure interaction and wave propagation problems in a stented artery. Reflection of waves in blood vessels is well documented in the literature, but it has always been linked to a strong variation in geometry, such as the branching of vessels. The aim of this work is to detect the possibility of wave reflection in a stented artery due to the repet...

Experimental Fluid Mechanics of Pulsatile Artificial Blood Pumps

The fluid mechanics of artificial blood pumps has been studied since the early 1970s in an attempt to understand and mitigate hemolysis and thrombus formation by the device. Pulsatile pumps are characterized by inlet jets that set up a rotational “washing” pattern during filling. Strong regurgitant jets through the closed artificial heart valves have Reynolds stresses on the order of 10,000 dyn...

Pressure-radius relationship in large blood vessels of man.

• The measurement of instantaneous blood flow in the great vessels in man is of importance in the study of circulatory dynamics. With the pressure-gradient technique, it is possible to estimate instantaneous blood velocity in man. However, in order to compute instantaneous blood flow from blood velocity, the radius of the vessel under study must be known at every instant in the cardiac cycle. T...