Find the convection coefficient (h) associated with airflow over the surface of a thick, stainless steel casting. thermocouples are inserted into the casting at distances of 10 mm and 20mm from the surface along a hypothetical line normal to the surface. the steel has a thermal conductivity of 15 w/m-k. the therm

Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa.s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)