PIV-17

Table 2-17. Temperature and velocity profiles.

Ethanol evaporated and burned in boundary layer behind back-facing step.
Wind channel had no top lid, U₀ =11,2 m/s,
distance from barrier x = 30 mm.

x, y (mm) - longitudinal and transverse coordinates;
U, U', V, V', (m/s) - longitudinal averaged velocity and its RMS pulsations,
temperature (T, K), correlations U'V' (m ²/s ²);

Tu₀=1%
y,mm	T	U	V	U'	V'	U'V'
0	341
0,5	863	0,212	-0,066	0,695	0,472	0,151
1	1213	0,927	-0,155	1,406	0,944	0,538
1,5	1293	2,011	-0,310	1,909	1,317	0,930
2	1210	3,240	-0,417	2,177	1,536	1,210
2,5	1097	4,605	-0,432	2,324	1,594	1,467
3	967	6,128	-0,434	2,236	1,558	1,248
3,5	809	7,716	-0,415	1,881	1,496	0,953
4	645	9,055	-0,317	1,565	1,390	0,953
4,5	505	10,073	-0,163	1,373	1,270	0,834
5	400	10,731	-0,078	1,132	1,046	0,423
5,5	337	11,069	-0,032	0,878	0,583	0,169
6	303	11,188	-0,021	0,750	0,735	0,079
6,5	292	11,231	-0,014	0,641	0,624	0,060
7	290	11,258	-0,006	0,540	0,523	0,060
7,5	290	11,267	0,002	0,452	0,445	0,051
8	290	11,275	0,012	0,380	0,388	0,024
8,5	290	11,284	0,029	0,341	0,357	0,012
9	290	11,302	0,040	0,319	0,325	0,010
9,5	290	11,293	0,048	0,286	0,293	0,005
10	290	11,280	0,058	0,274	0,279	0,000
10,5	290	11,293	0,072	0,247	0,257	0,002
11	290	11,297	0,084	0,233	0,261	0,002
11,5	290	11,306	0,091	0,218	0,252	-0,001
12	290	11,293	0,097	0,229	0,233	-0,004
12,5	290	11,288	0,106	0,240	0,247	0,002
13	290	11,293	0,118	0,241	0,243	0,003
13,5	290	11,293	0,129	0,225	0,241	0,007
14	290	11,297	0,139	0,232	0,240	0,010
14,5	290	11,297	0,150	0,261	0,236	0,010
15	290	11,284	0,155	0,263	0,251	0,001
15,5	290	11,284	0,152	0,268	0,244	-0,001
16	290	11,280	0,155	0,257	0,262	-0,005
16,5	290	11,284	0,160	0,264	0,262	-0,005
17	290	11,306	0,163	0,297	0,257	-0,006
17,5	290	11,306	0,166	0,377	0,290	-0,013
18	290	11,297	0,169	0,376	0,356	-0,011
18,5	290	11,293	0,169	0,348	0,384	-0,019
19	290	11,271	0,166	0,330	0,322	-0,004
19,5	290	11,271	0,165	0,348	0,303	0,004
20	290	11,262	0,165	0,396	0,294	-0,014

Presence of areas with abnormally high and null friction corresponds to the boundary layer with detachment and large-scale structures formed at the barrier flow.

x, y (mm) - longitudinal and transverse coordinates; U, U', V, V', (m/s) - longitudinal averaged velocity and its RMS pulsations, temperature (T, K), correlations U'V' (m 2/s 2);

Presence of areas with abnormally high and null friction corresponds to the boundary layer with detachment and large-scale structures formed at the barrier flow.

x, y (mm) - longitudinal and transverse coordinates;
U, U', V, V', (m/s) - longitudinal averaged velocity and its RMS pulsations,
temperature (T, K), correlations U'V' (m ²/s ²);