# Natural Convection in Tall Cavity: Ra=8.6E+5 # Expts of Betts and Bokhari # Horizontal mean velocity profile normal to top wall at z= 0mm, x= 38.1 mm # distance from wall (mm) U (m/s) 2 -0.027 3 -0.035 5 -0.044 7.5 -0.048 10.5 -0.045 11.5 -0.043 17 -0.036 22 -0.025 31.5 -0.01