If an iron-0.77 % C steel is very slowly cooled from 800°C to room temperature, the expected microstructure is described as _____________.
Fill in the blank(s) with the appropriate word(s).
pearlite
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_________are used to determine temperature based upon the electrical resistivity of a material.
Fill in the blank(s) with the appropriate word(s).
He discovered what we now call Newton's first law of motion
A) Copernicus B) Galileo C) Ptolemy D) Tycho Brahe E) Kepler
Saturn's moon named ______________ is the second largest moon in the solar system
a. Titan b. Europa c. Ganymede d. Phobos e. Diamos
For fully turbulent flow in a long tube of diameter D, develop a relation between the ratio (L/?T)/D in terms of flow and heat transfer parameters, where L/?T is the tube length required to raise the bulk temperature of the fluid by ?T for fluids with Prandtl number of the order of unity or larger for liquid metals.
GIVEN
Fully developed turbulent flow in a long tube
Diameter = D
L/? T = Tube length required to raise the bulk temperature by ? T
FIND
A relationship for (L/?T)/D in terms of flow and heat transfer parameters using
(a) Equation 7.61 for fluids with Pr = 1
(b) liquid metals
ASSUMPTIONS
Steady state
Constant fluid properties
Uniform wall temperatures
SKETCH
