For planar, steady, incompressible Couette flow with a pressure gradient that when the upper moving plane is adiabatic, pleaseanswer the followins:
(1) expand the energy equation for this case,
(2) show the temperature ratio of the upper plate to the lower plate can be written as:
$$ \frac{T}{T_0} = 1 + \frac{\gamma - 1}{2} \frac{M^2}{P_r} \left[ \left( 1 - \frac{P}{3} \right)^2 + \frac{2P^2}{9} \right] $$
where $$ P = - \frac{a^2}{2\mu U} \frac{dp}{dx'} $$, $$ P_r = \frac{k}{\mu c_p} $$ (Prandtl number), and $$ M = \frac{U}{\sqrt{\gamma R T_0}} $$ (characteristic Mach number).
(3) What terms arise due to the viscous dissipation? Under what kind of circumstance can viscous dissipation be ignored?