Question

Given the oil sythetic motor at 20°C through a 5 cm diameter smooth
pipe at 1 million N/h with density, ρ = 891 kg/m3 and dynamic
viscosity, µ = 0.29 kg/m.s. Determine the type of flow with the
detail calculation.

Answer #1

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A 250 mm diameter of cast iron pipe flows 39.3 L/s of
SAE 10 oil along 500 m length. Given: dynamic viscosity, μ and
density, ρ of SAE 10 oil are 1.04 x 10-1 Ns/m2 and 917 kg/m3
respectively. By assuming the flow is laminar, determine energy
head and pressure loss due to pipe friction using Hagen-Poiseuille
equation and friction factor, f.

Oil is flowing through a horizontal pipe
constriction. In the large section, the pipe has a diameter of 1.7
meters and a pressure of 500 kPa. If the pipe constricts to a
diameter of 0.5 meters, what is the pressure in the constricted
pipe section. (Assume the oil flow rate is 65 m3/min
and oil density is 900 kg/m3)
49,432.419 kPa
13.096115 kPa
486.403885 kPa
513.801133 kPa
2. Oil is flowing through a
horizontal pipe expansion. In the small section,...

1-
Water flows in a 10 m long and 4 cm diameter pipe
contains 4 elbows ( KL= 0.2 ) at velocity 8 m/s.
Calculate the total head losses when the friction factor
f=0.03
35.56 m
22.07 m
27.07 m
15.46 m
2- water flows in a 10 m long and 5 cm diameter
horizontal pipe at rate 15 l/s
Calculate the pressure drop
Take the density of water 1000 kg/m3 and the
dynamic viscosity 0.001 kg/m.s
74.13 kPa
96.41...

Oil is flowing through a horizontal pipe constriction. In the
large section, the pipe has a diameter of 1.9 meters and a pressure
of 900 kPa. If the pipe constricts to a diameter of 0.4 meters,
what is the pressure in the constricted pipe section. (Assume the
oil flow rate is 65 m3/min and oil density is 900 kg/m3) 933.509601
kPa 121,028.169 kPa 32.478208 kPa 866.621792 kPa

Oil, with ?=860 kg/m3 and µ=0.06 kg/m ?s, flows through a
horizontal pipe of 15 m length. The power delivered to the flow is
1 hp. If friction losses are to be neglected and the flow is at the
laminar transition point
(a) What is the appropriate pipe diameter?
(b) For this condition, what are Q in m3/h; and
(c) ?W in kPa?

A liquid of density 1.33 × 103 kg/m3 flows steadily through a
pipe of varying diameter and height. At location 1 along the pipe
the flow speed is 9.15 m/s and the pipe diameter is 11.5 cm. At
location 2 the pipe diameter is 17.3 cm. At location 1 the pipe is
9.89 m higher than it is at location 2. Ignoring viscosity,
calculate the difference between the fluid pressure at location 2
and the fluid pressure at location 1.

A liquid of density 1.19 × 103 kg/m3 flows steadily through a
pipe of varying diameter and height. At location 1 along the pipe
the flow speed is 9.79 m/s and the pipe diameter is 10.7 cm. At
location 2 the pipe diameter is 14.1 cm. At location 1 the pipe is
8.75 m higher than it is at location 2. Ignoring viscosity,
calculate the difference between the fluid pressure at location 2
and the fluid pressure at location 1.

A liquid of density 1.37 × 103 kg/m3 flows steadily through a
pipe of varying diameter and height. At location 1 along the pipe
the flow speed is 9.47 m/s and the pipe diameter is 11.1 cm. At
location 2 the pipe diameter is 17.1 cm. At location 1 the pipe is
9.37 m higher than it is at location 2. Ignoring viscosity,
calculate the difference between the fluid pressure at location 2
and the fluid pressure at location 1.

A liquid of density 1.13 × 103 kg/m3 flows steadily through a
pipe of varying diameter and height. At location 1 along the pipe
the flow speed is 9.77 m/s and the pipe diameter is 11.3 cm. At
location 2 the pipe diameter is 14.5 cm. At location 1 the pipe is
8.43 m higher than it is at location 2. Ignoring viscosity,
calculate the difference between the fluid pressure at location 2
and the fluid pressure at location 1.

A liquid of density 1150 kg/m3 flows steadily through a pipe of
varying diameter and height. At Location 1 along the pipe, the flow
speed is 9.99 m/s and the pipe diameter ?1 is 12.3 cm . At Location
2, the pipe diameter ?2 is 17.9 cm . At Location 1, the pipe is
Δ?=8.79 m higher than it is at Location 2. Ignoring viscosity,
calculate the difference Δ? between the fluid pressure at Location
2 and the fluid pressure...

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