Data 18

Table 18. RMS - velocity pulsations (U', m/s). U₀ =10 m/s, 98-open,
rib - 3mm, Tu₀ =8%
x,y (mm)

y	x=15	x=75	x=140	x=205	x=270	x=335
1	....	1,41	1,41	1,41	....	....
2	....	1,58	1,58	1,76	1,23	1,78
3	....	2,11	1,96	1,96	1,41	2,13
4	4,44	2,11	1,96	2,13	2,31	3,01
5	1,94	1,76	2,13	2,49	2,66	2,84
6	1,34	1,76	2,13	2,66	2,84	2,66
7	1,10	1,67	2,31	2,13	3,54	3,01
8	0,99	1,50	2,13	1,76	3,21	2,84
9	0,86	1,41	1,96	1,76	2,49	2,75
10	0,81	1,10	1,78	1,76	1,76	2,66
12	0,79	0,88	1,50	1,14	1,41	2,66
15	0,66	0,79	1,01	0,79	1,23	1,67
20	0,73	0,75	0,84	0,73	1,23	1,67
25	....	0,68	0,75	0,68	0,95	1,58

The RMS value of pulsations was corrected until the measured level of turbulence at the channel entrance coincided with the hot-wire data. In our estimates, this leads to an increase in the error of (u')- determination up to 20-25%.