ME 130L
17910 – 17975
The University of Texas at Austin
Mechanical Engineering Department
Fall ’10
Dr. Hidrovo
1
ME 130L
Experimental Fluid Mechanics
Lab #5 - Flow in Pipes
I.
Objectives
The objectives of this lab are to:
1.
Using dye flow visualization, observe transition from laminar to fully turbulent flow in a pipe and
experimentally define the conditions for transition.
2.
Measure pressure drop in a pipe and express in dimensionless form via the friction factor.
3.
Correlate measured friction factor with Reynolds number and compare to published data.
II.
Background
Piping systems (like the Trans-Alaska Pipeline in Figure 1 and Figure 2) are vital for countless real
world applications.
Flow and pressure drop in piping systems is one of the most important practical
applications of fluid mechanics in Mechanical Engineering.
"Head losses" must be made up by a
pump or blower.
The engineer must specify what size pump or blower is needed for a given flow
rate.
Thus losses must be predicted with some accuracy.
In this lab you will make direct
measurements of the pressure losses in a pipe flow system, and compare these measurements with
predicted pressure losses.
Figure 1:
Oil pipe line in Alaska.

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