313Grid generated high turbulence

To simulate the high turbulence flow from the gas turbine combustor, a bar grid turbulence generator with an open area ratio of 0.6 is employed. The free stream turbulence intensityis about 14.0% at an exit Reynolds number of 6.1 x 105. The turbulent boundary layer on the tip-endwall downstream of the bar grid turbulence generator is also measured at X/Cx = —1.6 ahead of the leading edge of the blade 3. The results are plotted in fig. 3.3, which show that the velocity profile fits the log law of the wall well.

0 0

Post a comment