vapor phases of the coolant turbulent correlations can be used to figure out the heat
transfer coefficient, the heat flux, and the wall temperatures all of which are extremely
important in designing the test rig for experimental analysis.
For conducting a study on the heat transfer analysis, many equations and theories
are involved. The basic models for heat transfer analysis from Incropera and DeWitt [11]
will be shown here and further explained in Chapter 3. For general considerations
dT, q"P P
= = h(T T- ) where P = rD (1)
dx mh mhc
Eq. (1) explains the energy balance across a basic system with P as the perimeter. For
constant heat flux considerations
T(X)=T +q x (2)
mc
Eq. (2) shows the relationship between the fluid temperature and the wall heat flux. For
constant wall temperature considerations
T,- T, (x) Px
T-T- = exp (3)
T, T,, mcP
Eq. (3) provides an explanation of how the fluid temperature changes due to the constant
surface temperature. When dealing with a free stream constraint the following equation
provides detail into how that heat transfer is considered.
A =exp- UA (4)
A, T. T,, mce
where U is the overall heat transfer coefficient given by
U = h+ (5)