Question: For the elbow duct in Fig P3.39, SAE 30 oil at 20°C enters section 1 at 350 N/s, where the flow is laminar, and exits

For the elbow duct in Fig P3.39, SAE 30 oil at 20°C enters section 1 at 350 N/s, where the flow is laminar, and exits at section 2, where the flow is turbulent: u1 ≈ Vav1 (1-r2 / r2 1) u2 ≈ Vav2 (1-r/R2) 1/7
Assuming steady incompressible flow, compute the force, and its direction, of the oil on the elbow due to momentum change only (no pressure change or friction effects) for
(a) Unit momentum-flux correction factors and
(b) Actual correction factors β1 and β2

For the elbow duct in Fig P3.39, SAE 30

D2 6 cm Do, 10cm 30

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For SAE 30 oil 8720 Nm3 thus Q 3508720 00401 m3s This flow Q must equal the integrated volume ... View full answer

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