Table 2. Velocity profiles (U, m/s). U0 =10 m/s, 98-open, rib
- 3mm,
Tu0 =1%
x,y (mm)
| y | x=40 | x=80 | x=120 | x=160 | x=200 | x=240 | x=280 |
| 0 | 0,00 | 0,00 | 0,00 | 0,00 | 0,00 | 0,00 | 0,00 |
| 1 | 1,28 | 2,46 | 2,76 | 2,18 | 1,71 | 1,48 | 1,59 |
| 2 | 3,61 | 4,84 | 4,76 | 3,97 | 3,36 | 3,24 | 3,13 |
| 3 | 5,71 | 6,76 | 6,14 | 5,29 | 4,36 | 4,60 | 4,41 |
| 4 | 6,73 | 7,64 | 7,47 | 6,76 | 5,41 | 5,73 | 5,64 |
| 5 | 7,61 | 8,07 | 8,19 | 8,03 | 6,97 | 7,05 | 6,64 |
| 6 | 8,56 | 8,39 | 8,59 | 8,62 | 8,13 | 8,13 | 7,43 |
| 7 | 9,38 | 8,76 | 8,91 | 8,89 | 8,77 | 8,77 | 8,25 |
| 8 | 10,03 | 9,10 | 9,16 | 9,14 | 9,01 | 9,10 | 8,85 |
| 9 | 10,37 | 9,43 | 9,39 | 9,32 | 9,18 | 9,29 | 9,19 |
| 10 | 10,47 | 9,73 | 9,60 | 9,47 | 9,30 | 9,42 | 9,43 |
| 12 | 10,50 | 10,22 | 9,99 | 9,79 | 9,59 | 9,70 | 9,76 |
| 15 | 10,50 | 10,46 | 10,33 | 10,15 | 9,95 | 10,06 | 10,04 |
| 20 | 10,50 | 10,50 | 10,48 | 10,45 | 10,33 | 10,44 | 10,36 |
| 25 | 10,50 | 10,50 | 10,50 | 10,50 | 10,48 | 10,50 | 10,48 |
| 30 | 10,50 | 10,50 | 10,50 | 10,50 | 10,50 | 10,50 | 10,50 |
Experimental data on friction coefficients in the boundary layer with combustion behind the barrier differ with the value of acceleration parameter.
In acceleration-free experiments friction coefficients in the considered flow modes can be negative, null.
|