Afluid of density 900 kg/m3 passes through a converging section of an upstream diameter of 50 mm and a downstream diameter of 25 mm. pressure difference across the area reduction is - 40 kn/m2 determine the downstream velocity and the volume flow rate if the flow is ideal. i. determine the downstream velocity if the flow is not ideal and has a velocity coefficient of cy = 0.89.

Q= 4.6 × 10⁻³ m³/s

actual velocity will be equal to 8.39 m/s

Explanation:

density of fluid = 900 kg/m³

d₁ = 0.025 m

d₂ = 0.05 m

Δ P = -40 k N/m²

C v = 0.89

using energy equation

under ideal condition v₁² = 0

v₂² = 88.88

v₂ = 9.43 m/s

hence discharge at downstream will be

Q = Av

Q =

Q =

Q= 4.6 × 10⁻³ m³/s

we know that

hence , actual velocity will be equal to 8.39 m/s

b. check your rearview mirror

explanation: