Question

1. A polymer melt with very low viscosity moving with velocity V in a pipe with radius R. Write the boundary conditions in pipe(shear stress and velocity at upper and lower wall and center). (5 points) 2- A pipe with circular cross section carrying water with constant density from section 1 to section 2(see figure). The pressure at inlet is P1=5000 $\frac{N}{m^2}$ 1-Determine the water velocity and pressure at the outlet 2. Velocity V1=3m/s, d1=40cm, h1-30 cm and d2= 20cm, h2=50cm. g = 9.8 $\frac{m}{s^2}$ and density $\rho$=1000 $\frac{kg}{m^3}$ (15 points)

          1. A polymer melt with very low viscosity moving with velocity V in a pipe with radius R.
Write the boundary conditions in pipe(shear stress and velocity at upper and lower wall
and center). (5 points)
2- A pipe with circular cross section carrying water with constant density from section 1 to
section 2(see figure). The pressure at inlet is P1=5000 $\frac{N}{m^2}$ 1-Determine the water
velocity and pressure at the outlet 2. Velocity V1=3m/s, d1=40cm, h1-30 cm and d2=
20cm, h2=50cm. g = 9.8 $\frac{m}{s^2}$ and density $\rho$=1000 $\frac{kg}{m^3}$ (15 points)

1. A polymer melt with very low viscosity moving with velocity V in a pipe with radius R.
Write the boundary conditions in pipe(shear stress and velocity at upper and lower wall
and center). (5 points)
2- A pipe with circular cross section carrying water with constant density from section 1 to
section 2(see figure). The pressure at inlet is P1=5000 (N)/(m^2) 1-Determine the water
velocity and pressure at the outlet 2. Velocity V1=3m/s, d1=40cm, h1-30 cm and d2=
20cm, h2=50cm. g = 9.8 (m)/(s^2) and density ρ=1000 (kg)/(m^3) (15 points)

Added by John L.

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