Question

2) (35 points) It is a common practice when examining a fluid's viscous behavior to plot the shear strain rate (velocity gradient) dv dy on the abscissa versus shear stress (t) on the ordinate. When a fluid has a straight-line behavior between these two variables it is called a Newtonian fluid, and the resulting relationship is where u is the fluid viscosity. Many common fluids follow this behavior such as water, milk, and oil. Fluids that do not behave in this way are called non-Newtonian. Some examples of non-Newtonian fluids are shown in the figure below Shear sirsin For Bingham plastics, there is a yield stress ty that must be overcome before flow will begin, For Bingham plastics, there is a yield stress ty that must be overcome before flow will begin, A common example is toothpaste. For pseudoplastics, the shear stress is raised to the power n, Common examples are yogurt and shampoo. The following data shows the relationship between the shear stress τ and the shear strain rate γ for a 0.5% hydroxethy!cellulose in water solution, which is a pseudoplastic fluid. Find the values of μ and no without using MATLAB. Shear strain rate γ. 1/s Stress t, N/m | 50 90 110 130 6.01 7 48 8.59 9.19 10.21

Answer 1

7.48 구 748 60l 6. 0.146) 2803 E 0.473 6.6S

Thosdl 0-5 S