The Effects of Obstructions on Steady State Fluid Flow in a Long, Straight Tube


Class: BE-310
Group: M2
Members: George Bell, Gregory Saybolt, Keng Hao Shi, Mahesh Swaminathan, Jeanette Yung
Date: May 4, 1998
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Abstract:
The objective of this project was to study the effects of a clot on a straight tube flow system. Three different experiments were designed to model the effects of clot size (% stenosis) and clot length on the critical Reynolds number, head loss, and drag coefficient of the given system. Experiment 1 and 3 differed in that the tube entrance in experiment 3 was smoothed to better model the biological conditions.

We found from experiments 1 and 3 that turbulence, drag, and head losses are interrelated. We also concluded that turbulence causes energy losses, represented by head loss and the discharge coefficient. The results show that increases in stenosis cause corresponding increases in turbulence. This increased turbulence in turn causes increased head loss and reduced discharge coefficient. The clot length does not have a significant impact on these variables.