Data 15

Table 15. OH radicals concentration (cm^-3× 10^-16).
U₀ =10 m/s, 98-open, Tu₀ =1%, rib - 3mm.
x,y (mm)

y	x=40†	x=80†	x=120†	x=160	x=200
1	3,18	0,22	0,15
2	2,96	0,92		0,42	0,02
3	2,81	2,46	0,50	0,25	0,12
4	2,13	2,40	1,38	0,64	0,20
5	2,17	2,42	2,24	0,71	0,19
6	1,82	2,10	1,47	2,18	0,87
7	1,05	1,73	2,04	2,51	1,43
8	0,34	1,04	0,72	1,73	1,96
9	0,73	1,08	1,09	1,19	2,23
10	0,42	0,94	0,51	0,70	2,11
11	0,12	0,83	0,12	0,41	1,44
12	0,25	0,52	0,63	0,02	1,18
13	0,35	0,52	0,51		0,94
14		0,14	0,25	0,13	0,52
16		0,48	0,33		0,28
18					0,06
20					0,14

The OH profiles change along with the increase of the distance from the channel inlet. Two types of diffusion combustion are combined in the boundary layer behind a barrier. Frontal combustion occurs near the wall. At the external boundary, chemical reactions occur in large-scale longitudinal structures. In the transition zone between the combustion mechanisms, there are minimal rates for combustion product formation and oxygen consumption and maximal concentrations of OH radicals.

† Coordinate "y, mm" should be increased by 0.5 mm for data marked with dagger.