Physical Flow Model
Flow model uses peristaltic roller pump, digital pressure gauge, and catether tubing set
In clinical use, the tubing set and catheter contain flowing blood. Blood's viscosity is non-Newtonian.
For simplicity and low cost the first flow tests used water, a Newtonian fluid.
For increased realism and accuracy, later flow tests simulated blood using a commercially available synthetic blood analog.
The catheter lumen is non circular.