Question

Water flows through a pipe of 5mm in diameter with a mean velocity of 0.2 m/s. The dynamic viscosity of the water is given as 10-3 Pa s. Establish whether the equation f = 64/Re may be used to calculate the friction factor for this flow.

Answer #1

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...

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.

Water flows through a 5-cm-diameter pipe at the
average velocity of 1.25 m/s.
(a) In the dimensions of L/s, what is the volumetric
flow rate?
(b) If the diameter of the pipe is reduced by 20% at a
constriction, by what percentage does the water’s velocity
change?
I need answer only in typed form. otherwise I'll
downvote

Water flows through a constricting pipe. At the inlet, the
pressure is 100,000 Pa, the diameter is 1.6 m and the water flows
at 1 m/s. The centerline of the outlet of the pipe is the same as
the centerline of the inlet of the pipe. Solve for the PRESSURE and
VELOCITY of the water exiting the pipe if the diameter is 0.8
m.
I know Bernoulli's equation, it's the solving for two unknowns
that has me lost.

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.

Fluid with a specific gravity of 1.3 is flowing through a pipe
of 1.1 m diameter. Considering dynamic viscosity of 0.3
N.s/m2 determine the type of flow for a velocity of 1.6
m/s, 0.36 m/s and 0.52 m/s respectively.

1. Water flows in a 0.2 cm, 15-m long pipe at 1.2 m/s. Determine
the flow regime, the pressure drop across the pipe, in kPa, the
head loss through the pipe in m and the volume flow rate through
the pipe, in L/s. [8-31*]

What is the approximate mean velocity gradient, G, in a 10 m
long rough pipe under the following flow conditions: Q=10 m3/sec,
Dia=1.0 m, T=20C.
The friction factor is a function of Re.
For Re > 104, f=0.06
For Re < 103, f=64/Re

A liquid of density 1270 kg/m3 flows steadily through
a pipe of varying diameter and height. At Location 1 along the
pipe, the flow speed is 9.81 m/s and the pipe diameter d1 is 11.3
cm. At Location 2, the pipe diameter d2 is 17.1 cm. At Location 1,
the pipe is Δy=9.59 m higher than it is at Location 2. Ignoring
viscosity, calculate the difference ΔP in units of Pa between the
fluid pressure at Location 2 and the...

The mean velocity of water in a 150 mm horizontal pipe is 0.9
m/s. Calculate the loss of head through an abrupt contraction to 50
mm diameter. If the pressure in the 150 mm pipe is 345 kPa, what is
the pressure in the 50 mm pipe, neglecting pipe friction?

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 3 hours ago

asked 3 hours ago

asked 3 hours ago