Carbon dioxide gas enters a well-insulated diffuser at 20 psia, 500 R, with a velocity of 800 ft/s through a flow area of 1.4 in2. At the exit, the flow area is 30 times the inlet area, and the velocity is 20 ft/s. Assume carbon dioxide is an ideal gas. For a steady-state operation, determine

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)