Flow through a glaucoma tube

by spal123
Tags: flow, flow rate, medicine, tube, velocity
 Sci Advisor P: 5,524 Flow through a glaucoma tube I'll just post it here: The flow profile, in terms of the volumetric flow, is U(r) = $$\frac{2Q}{\pi R^{4}} (R^{2}-r^{2})$$ Where Q is the volumetric flow (volume/time), and R the radius of the tube. Again, the relevant point is whether you are trying to control the pressure difference between chambers, or control the flow rate. If you maintain a constant pressure jump, as the diameter of the tube changes the fluid velocity will change, altering the volumetric flow. Alternatively, maintaining a constant flow rate means the pressure jump and tube radius are connected.