- Required information Consider a flow of SAE 30W oil through a 9.5- cm-diameter pipe. For SAE 30W oil, take p = 891kg/m³, μ = 0.29 kg/m s at 20 °C, and μ = 0.01 kg/m-s at 100 °C, and π = 22/7. For what flow rate in m³/h would a transition to turbulence take place at 20°C? The flow rate is m³/h.

- Required information Consider a flow of SAE 30W oil through a 9.5- cm-diameter pipe. For SAE 30W oil, take p = 891kg/m³, μ = 0.29 kg/m s at 20 °C, and μ = 0.01 kg/m-s at 100 °C, and π = 22/7. For what flow rate in m³/h would a transition to turbulence take place at 20°C? The flow rate is m³/h.

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

See similar textbooks

Similar questions

In mechanical fluid
Homework Question: SAE 10W oil at 20oC flows from a tank into a 2.5 cm-diameter tube 50 cm long. The flow rate is 1.15 m3/hr. Is the entrance length region a significant part of this tube flow? HINT : The flow rate is 1.15 m3/hr. & flows from a tank into a 2.5 cm-diameter tube 50 cm long***
The critical Reynolds number makes a distinction between laminar and turbulent flow regimes of objects immersed in a fluid, as shown in the table below: Type of flow Re critical Pipeline flow 2300 Flow over smooth plate 5,0x10^5 Flow over smooth sphere 4,0x10^5 Considering that an airplane takes off with a speed of 260km/h and that rhoAR = 1.29kg/m^3, miAR= 1.81*10^-5 kg/(m*s), what is the length of the boundary layer over the wings where does the flow become turbulent?
Air at 1.7 atm gauge and l5°C enters a horizontal 75-mm steel pipe that is 70 m long. The velocity at the entrance ofthe pipe is 60 m/s. Assuming isothermal flow, what is the pressure at the discharge end of the line?
A laminar flow element measures low gas-flow rates with a bundle of capillary tubes packed inside a large outer tube. Consider oxygen flowing at 84 ft3/min in a 4-in-diameter pipe. (i) Is the flow approaching the element turbulent? (ii) If there are 1000 capillary tubes, Length L, is 4 in, select a tube diameter to keep Reynold’s number below 1500 and also to keep the tube pressure drop not greater than 0.5 lbf/in2. (iii) Do the tubes selected fit nicely within the approach pipe?
A 50 cm diameter pipe conveys water for purposes of power generation. The pipe is 1000 m long and has a head of 100 m at the inlet. If a nozzle, discharging into atmosphere is fitted at the outlet, estimate the diameter of the nozzle for maximum transmission of power. What is the magnitude of the maximum power? [Assume f = 0.019].
Two water tanks, each with base area of 1 ft2, are connectedby a 0.5-in-diameter long-radius nozzle as in Fig. .If h = 1 ft as shown for t = 0, estimate the time for h(t) todrop to 0.25 ft.
SAE 50W oil at 20 °C flows from one tank to anotherthrough a tube 160 cm long and 5 cm in diameter. Estimatethe flow rate in m3/hr if z1 = 2 m and z2= 0.8 m.
2. Consider the boundary-layer momentum equation for steady incompressible flow in two dimen- sions: ди dpe ду du du + po ay dx Assume the viscosity, u, to be constant. What does this equation simplifies to at a stationary solid surface? Based on this result, is a boundary layer more likely to separate in a favourable gradient (pressure decreasing) or an adverse pressure gradient? Sketch the velocity profile of a boundary layer that is attached and one that is separated. pressure
Air (diatomic, MW = 28.8664 g/mol) at 1.7 atm gage (where Pam = 1 atm) and 15°C enters a 70-m long horizontal 75-mm-ID steel pipe (€ = 4.6(10) m). The velocity at the entrance of the pipe is 60 m/s. Assuming isothermal flow, what is the absolute pressure (atm) at the discharge end of the line? Use Churchill equation for the friction factor.
Show work for both subparts as it is a single problem.
A liquid, sg = 12.5, is flowing in a 30mm-diameter pipe at 5 m/s. What is the weight flux in kN/s?