# 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= 0.30 # x (mm) T (deg C) 1 15.95 5 17.19 19 21.03 38.1 24.2 57.2 27.58 71.2 31.75 75.2 33.18