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engineering11
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Fluid Mechanics IMP and URGENT
Can someone please help me solve these questions ASAP thnx
Problem #1
A fluid having a specific gravity of 0.6 and a viscosity of 0.00035 N∙s/m2 flows through a circular duct which is 300 mm in diameter. The average speed of fluid is 15 m/s. The duct is commercial steel. Find the velocity of the fluid at 6 mm from the wall and determine the drag force of the fluid on a 5 m length of the duct.
Problem #2
Flowing through a pipe of 30 cm diameter is 0.28 m3/s of water at 20 ◦C. The pipe is very smooth. Estimate the shear stress at the wall and the velocity at a distance of 0.02 mm from the wall.
Problem #3
Helium (ν = 1.3x 10-4 m2/s and ρ = 0.15 kg/ m3) is flowing through a 30 cm. diameter duct with an average velocity of 6 m/s. The velocity is measured to be 0.3 m/s at a distance 0.1 mm from the wall. It is known that this point is within the laminar sub-layer. Determine
a) shear velocity for the flow
b) shear stress at the wall
c) laminar sub-layer thickness
Can someone please help me solve these questions ASAP thnx
Problem #1
A fluid having a specific gravity of 0.6 and a viscosity of 0.00035 N∙s/m2 flows through a circular duct which is 300 mm in diameter. The average speed of fluid is 15 m/s. The duct is commercial steel. Find the velocity of the fluid at 6 mm from the wall and determine the drag force of the fluid on a 5 m length of the duct.
Problem #2
Flowing through a pipe of 30 cm diameter is 0.28 m3/s of water at 20 ◦C. The pipe is very smooth. Estimate the shear stress at the wall and the velocity at a distance of 0.02 mm from the wall.
Problem #3
Helium (ν = 1.3x 10-4 m2/s and ρ = 0.15 kg/ m3) is flowing through a 30 cm. diameter duct with an average velocity of 6 m/s. The velocity is measured to be 0.3 m/s at a distance 0.1 mm from the wall. It is known that this point is within the laminar sub-layer. Determine
a) shear velocity for the flow
b) shear stress at the wall
c) laminar sub-layer thickness