(a) Consider a non-Newtonian fluid with a shear thickening behaviour. @ Descrībe the characteristic of a shear thickening fluid. (1 Give an example of shear thickening fluid. (ii) Write down a possible relation for shear stress and strain rate for 1D flow. (iv) Sketch the flow curve for positive and negative shear stresses. (v) What is the viscosity of the fluid at zero shear rate?

Elements Of Electromagnetics
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2. (a) Consider a non-Newtonian fluid with a shear thickening behaviour.
O Describe the characteristic of a shear thickening fluid.
(ii) Give an example of shear thickening fluid.
(iii) Write down a possīble relation for shear stress and strain rate for 1D flow.
(iv) Sketch the flow curve for positive and negative shear stresses.
(v) What is the viscosity of the fluid at zero shear rate?
(b) Consider the flow in the scenarios as described below and in the Figures Q2(A, B).
Scenario 1: A syringe delivering a vaccine at a constant flow rate Q = 0.5 cc/s. The
needle is with a length L = 4 cm and a diameter Dy = 0.4 mm. Main content of
vaccine is water.
A
B
DN
Figure Q2(A)
Scenario 2: A diaphragm pump with valves removed contains ethanol. The
diaphragm is set to move at 10 Hz. Tube diameter Dp = 2 cm.
D
Figure Q2(B)
Refer to Point A, B, C, D in the figures, at which point(s) the flow is
O Steady? Unsteady?
(i1) Uniform? Non-uniform?
(iii) Fully developed? Not fully developed?
(iv) Compressible? Incompressible?
(v) Parabolic? Not parabolic?
Transcribed Image Text:2. (a) Consider a non-Newtonian fluid with a shear thickening behaviour. O Describe the characteristic of a shear thickening fluid. (ii) Give an example of shear thickening fluid. (iii) Write down a possīble relation for shear stress and strain rate for 1D flow. (iv) Sketch the flow curve for positive and negative shear stresses. (v) What is the viscosity of the fluid at zero shear rate? (b) Consider the flow in the scenarios as described below and in the Figures Q2(A, B). Scenario 1: A syringe delivering a vaccine at a constant flow rate Q = 0.5 cc/s. The needle is with a length L = 4 cm and a diameter Dy = 0.4 mm. Main content of vaccine is water. A B DN Figure Q2(A) Scenario 2: A diaphragm pump with valves removed contains ethanol. The diaphragm is set to move at 10 Hz. Tube diameter Dp = 2 cm. D Figure Q2(B) Refer to Point A, B, C, D in the figures, at which point(s) the flow is O Steady? Unsteady? (i1) Uniform? Non-uniform? (iii) Fully developed? Not fully developed? (iv) Compressible? Incompressible? (v) Parabolic? Not parabolic?
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