Experimental investigation of the effects of arterial geometries in different severities of symmetrical stenosis on pressure drop and pump power

This study was sponsored by Atattirk University Scientific Research Projects Coordination Unit with the grant FCD-2019-7316.nvironmental factors and unhealthy eating damage the cardiovascular structure. This damage, blood and vessel interactions and consequent hemodynamic effects cause cardiovascular diseases. In the study, an experimental system was established by creating models for stenosis caused by environmental factors. The purpose of the experimental study presented is to investigate the effect, pressure drop, peristaltic pump inlet and outlet pressure and most importantly, the amount of power consumed by the peristaltic pump regarding arterial stenosis severity with varying areal stenosis percentages. The tests were performed for the pulse values from 54 to 168 bpm by setting up models with 0%, 60%, 70% and 80% symmetrical stenosis severities. In the study, the pressure difference in the test area increased concomitantly with elevated pulse value and increased stenosis severity. This situation revealed that as the intensity of narrowing increases in vessels, the narrowing space differential pressure increases, and this amount increases even more with increased exertion. The pressure at the peristaltic pump outlet increased concomitantly with elevated pulse value and increased stenosis severity. The peristaltic pump overworked to overcome the increased differential pressure related to the increased pulse value and stenosis severity