A fire hose has an inside diameter of 6.5 cm. Suppose such a hose carries a water flow of 40.5 L/s starting at a gauge pressure of 1.68 × 106 N/m2 . The hose discharges through a nozzle having an inside diameter of 3.4 cm. Take the viscosity of water to be 1.005 × 10-3 (N/m2)⋅sdh = 6.5 cmdn = 3.4 cmP = 1.68 × 106 N/m2Q = 40.5 L/sa. the Reynolds number, NR, for flow in the fire hose to show that the flow must be turbulent, with NR≥ 3000. b. Calculate the Reynolds number, NR, for flow in the fire hose and nozzle to show that the flow must be turbulent, with NR≥ 3000.

Answered: A fire hose has an inside diameter of…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A fire hose has an inside diameter of 6.5 cm. Suppose such a hose carries a water flow of 40.5 L/s starting at a gauge pressure of 1.68 × 10⁶ N/m² . The hose discharges through a nozzle having an inside diameter of 3.4 cm. Take the viscosity of water to be 1.005 × 10^-3 (N/m²)⋅s

d_h = 6.5 cm
d_n = 3.4 cm
P = 1.68 × 10⁶ N/m²
Q = 40.5 L/s

a. the Reynolds number, N_R, for flow in the fire hose to show that the flow must be turbulent, with N_R≥ 3000.

b. Calculate the Reynolds number, N_R, for flow in the fire hose and nozzle to show that the flow must be turbulent, with N_R≥ 3000.

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