Show that for fully developed laminar flow between two flat plates spaced 2a apart, the Nusselt number based on the ??bulk mean?? temperature and the passage spacing is 4.12 if the temperature of both walls varies linearly with the distance x, i.e., ??T/??x = C. The ??bulk mean?? temperature is defined asbr>

GIVENFully developed laminar flow between two flat platesSpacing = 2a??T/??x = CBulk mean temperature as defined aboveASSUMPTIONSteady stateConstant and uniform property valuesFluid temperature varies linearly with xhis corresponds to a constant heat fluxboundary)

d T, () ()dy , ()dy