# Natural Convection in Tall Cavity: Ra=8.6E+5 # Expts of Betts and Bokhari # Temperature profile across the cavity on external surface of the perspex back wall at y/H= 0.90 # x (mm) T (deg C) 1 16.07 5 17.86 19 22.9 38.1 26.47 57.2 29.78 71.2 33.26 75.2 34.39