(a) The following data was measured for a fluid. Determine the rheological relationship of the fluid....

     

Transcribed Image Text:

(a) The following data was measured for a fluid. Determine the rheological relationship of the fluid. Describe the fluid. [2 marks] Shear stress (Pas) 16 14 1 0.8 06 04 0.2 0 0 05 Shear rate (1/s) y=0.8x-0.301 LS 2.5 A pressure drop of 17Pa was measured for a 300mm long capillary with diameter 3mm carrying blood. The blood is Newtonian which has a viscosity of 1.35x10³ Pa s. a. Sketch the velocity profile [2 marks] b. What is the maximum velocity? [1 Mark] c. What is the wall shear stress? Derive your answer graphically and analytically [4 Marks] d. What is the volumetric flow rate? [1 Mark] If the fluid was non-Newtonian with the following relationship between shear-stress and shear rate, what is the shear stress at the wall? dV₂ Trz = +0.005 dr 1.2 (a) The following data was measured for a fluid. Determine the rheological relationship of the fluid. Describe the fluid. [2 marks] Shear stress (Pas) 16 14 1 0.8 06 04 0.2 0 0 05 Shear rate (1/s) y=0.8x-0.301 LS 2.5 A pressure drop of 17Pa was measured for a 300mm long capillary with diameter 3mm carrying blood. The blood is Newtonian which has a viscosity of 1.35x10³ Pa s. a. Sketch the velocity profile [2 marks] b. What is the maximum velocity? [1 Mark] c. What is the wall shear stress? Derive your answer graphically and analytically [4 Marks] d. What is the volumetric flow rate? [1 Mark] If the fluid was non-Newtonian with the following relationship between shear-stress and shear rate, what is the shear stress at the wall? dV₂ Trz = +0.005 dr 1.2

Answer rating: 100% (QA)

a The fluid is shear thinning nonNewtonian since shear stress increases ... View the full answer