Question

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.

Answer #1

SAE 30 Oil at 60oF flows through a 1.5 m diameter
pipe at a velocity of 2.5 m/s.
(3 points) What type of flow is occurring in the
pipe:
(2 points) If the pipe is made out of cast iron,
determine the friction factor for flow through this
pipe.

11. Oil is being pumped into a 10.0 mm diameter pipe with a
Reynolds number of 2100.
The oil density is 855 kg / m3 and its viscosity is 2.1 x 10 -2 Pa.
S
A) What is your speed in the pipeline? B) You want to keep the same
Reynolds number of 2100 and the same speed that in part
(a)
using a second fluid with a density of 925 kg / m3
and a viscosity of 1.5 x...

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.

4. Oil of viscosity 2E-5 m2/s flows at 210 L/s through a pipe of
roughness 0.038 mm. The head loss through the pipe is 0.42 m for
every 100 m pipe length. Find the theoretical pipe diameter, in m,
required to handle this situation.

0.0425 m3/s of heavy oil flows from pt. A (z = 31 m)
to pt. B (z = 21 m) through a 914 m long and 15 cm diameter steel
pipe.
γwater = 9800 kg/m2s2,
νoil (kinematic viscosity) = μ/ρ = 4 cm2/sec,
specific gravity of oil = 0.92.
(a) Is the flow laminar or turbulent?
(b) What is the Head Loss in meters?
(c) If the gage pressure at A is 1065 kPa, what is the gage
pressure at...

The oil flows in a vertical pipe that has overall height
of 30 m. The
pressure at the inlet of the pipe (before the pump) and
at the
location of oil delivery at the end of the pipe are both
atmospheric.
Determine:
1- The head supplied to the flow by the
pump.
2- The pressure at the exit of the pump.
2- The pressure at midway location of the pipe
between
inlet and exit.
Oil viscosity and density are...

Crude oil flows through a level section of the Alaskan pipeline
at a rate of 250 thousand cubic meters per day. The pipe inside
diameter is 1000 mm; its roughness is equivalent to that of
galvanized iron. The maximum allowable pressure is 8.3 MPa; the
minimum pressure required to keep dissolved gases in solution in
the crude oil is 340 kPa. The crude oil has SG = 0.93; its
viscosity at the pumping temperature of 60 oC
is μ= 0.017 kg/(m...

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...

A 6.8-km cast-iron
(new, uncoated) pipeline conveys 285 L/s of water at
10oC. If the pipe diameter is 32 cm, determine the
friction head loss (in m) calculated using the Hazen-Williams
equation. Use typical values for pipe roughness, as needed.
Ch = 130 for new ,
uncoated pipeline
Select one:
a. 99.53
b. 552.8
c. 225.2
d. 146.1

Design a cast iron (kd=8*10‐4 ft) pressurized system (pipe
diameter) that would convey water at 2 ft3/s from two elevated
tanks separated 200 ft long. The difference in water surface
elevation between the tanks is 20 ft and the kinematic viscosity is
1.217*10‐5 ft2/s. Along the system the entrance loss and the exit
loss have a KL of 0.5 and 1, respectively. Two 90 degrees bends are
present (KL=3) and a global valve (KL=10) is also installed along
the system.

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