Page 181 - Introduction to Computational Fluid Dynamics

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2D CONVECTION – CARTESIAN GRIDS
with water at 25 C. The humidified air becomes cooler and leaves through the
◦
front grill.
(a) State the equations governing the cooling process and identify the main
variables .
(b) Specify the appropriate exit boundary condition. Assume an equilibrium
condition at the wet pad. The wet pad is rough with roughness height 5
mm. The top and bottom walls are smooth and may be taken as insulated.
(c) Determine the average outflow temperature, relative humidity, humid-air
velocity, and the rate of moisture pickup.