Section 8.4 covers laminar flow in circular tubes (internal-flow).
Constant Heat Flux (Equation 8.53):
Constant Surface Temperature (Equation 8.55):
The derivation of equations 8.55 and 8.53 can be found in 11A - 2nd Class.
Equation 8.56:
Equation 8.57:
Equation 8.58: