# Staggered tube bundle array: 3.6x1.6 array 
# Experiments by S. Balabani
# rms v' velocity profiles at x/d= 6.4
#
#   y/d      v' (m/s)
     0.9       0.38
     1.2       0.4
     1.5       0.5
     1.8       0.58