Yotsakorn Pratumwal, Wiroj Limtrakarn, Sombat Muengtaweepongsa, Phatsawadee Phakdeesan, Suttirak Duangburong, Patipath Eiamaram and Kannakorn Intharakham

DOI: 10.14456/sjst-psu.2017.77

pp. 625 - 631

Abstract

This study presented the image scanning U-tube viscometer technique to measure the whole blood viscosity. Two
different constitutive models, power law and Casson, were selected to calculate blood viscosity. Results were compared with
rotating viscometer. They had a good agreement at higher shear rates. Three constitutive models power law, Casson and
Carreau Yasuda models were applied to blood viscosity data and used to simulate transient blood height in the U-tube.
Comparison of the U-tube simulation and the actual experiment showed that Carreau Yasuda model is the most accurate
model for whole blood viscosity measurement. 

Keywords

• U-tube viscometer
• blood
• viscosity
• image processing
• shear rate