Problem 2.89 - Problem 2.89 Given: Type of oil, flow rate,...

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Problem 2.89 [Difficulty: 2] Given: Type of oil, flow rate, and tube geometry Find: Whether flow is laminar or turbulent Solution: Data on SAE 30 oil SG or density is limited in the Appendix. We can Google it or use the following ν μ ρ = so ρ μ ν = At 100 o C, from Figs. A.2 and A.3 μ 91 0 3 × Ns m 2 = ν 11 0 5 × m 2 s = ρ 0 3 × m 2 1 0 5 × × s m 2 kg m s 2 N × = ρ 900 kg m 3 = Hence SG ρ ρ water = ρ water 1000 kg m 3 = SG 0.9 = The specific weight is γρ g = γ 900 kg m 3 9.81 × m s 2 2 kg m × = γ 8.829 10 3 × N m 3 = For pipe flow (Section 2-6) Q π D 2 4 V = so V
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This note was uploaded on 10/19/2011 for the course EGN 3353C taught by Professor Lear during the Fall '07 term at University of Florida.

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