7 - Blood Flow in Large Vessels Recall from week 2, if the...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Blood Flow in Large Vessels • Recall from week 2, if the fluid is Newtonian, lamina (e.g. N R is small): • What if you have a non-Newtonian solution (e.g. blood) with Newtonian components? μ blood / μ plasma = relative viscosity of blood • Viscosity is not an intrinsic property U 2 /L inertia U/L 2 viscous force =N R Fahraeus-Lindqvist Effect on Apparent Viscosity • For blood flow in cylindrical vessels, μ apparent (or μ blood ) decreases with decreasing vessel radius. This is for cells spaced apart by more than d vessel ! u Fahraeus-Lindqvist Effect on Apparent Viscosity • In very narrow tubes, the inverse behavior occurs and RBCs are well spaced apart. Thus we can calculate the pressure drop from individual RBCs according to Poiseullien pipe flow: where n = and p * = p / * Can be simplied, as this is the correction for app Apparent relative viscosity of blood =
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Fahraeus-Lindqvist Effect on Apparent Viscosity Apparent relative viscosity of blood
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/02/2009 for the course BENG 112B taught by Professor Huang during the Spring '08 term at UCSD.

Page1 / 3

7 - Blood Flow in Large Vessels Recall from week 2, if the...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online