# 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= 0.95 # x (mm) T (deg C) 1 16.22 5 18.03 19 23.05 38.1 26.5 57.2 29.73 71.2 33.28 75.2 34.46