PIV-24

Table 2-24. Velocity profiles.

Ethanol evaporated without burning in boundary layer behind back-facing step.
Wind channel had no top lid, U₀ =11,2 m/s,
distance from barrier x = 60 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	---
0,5	---	2,892	-0,012	1,474	0,377	0,201
1	---	5,279	-0,030	2,013	0,688	0,462
1,5	---	6,899	-0,058	1,644	0,875	0,619
2	---	7,933	-0,089	1,465	0,978	0,616
2,5	---	8,598	-0,117	1,402	1,038	0,654
3	---	9,090	-0,142	1,351	1,049	0,654
3,5	---	9,520	-0,166	1,303	1,048	0,553
4	---	9,909	-0,181	1,210	1,023	0,504
4,5	---	10,241	-0,183	1,127	0,926	0,390
5	---	10,527	-0,173	1,026	0,810	0,227
5,5	---	10,770	-0,151	0,892	0,733	0,161
6	---	10,971	-0,123	0,770	0,681	0,163
6,5	---	11,126	-0,092	0,687	0,607	0,115
7	---	11,238	-0,064	0,571	0,517	0,055
7,5	---	11,313	-0,039	0,456	0,432	0,031
8	---	11,369	-0,019	0,362	0,383	0,020
8,5	---	11,397	-0,005	0,310	0,362	0,011
9	---	11,416	0,003	0,282	0,347	0,003
9,5	---	11,421	0,002	0,273	0,334	0,008
10	---	11,425	-0,002	0,265	0,326	0,008
10,5	290	11,435	0,000	0,248	0,316	0,012
11	290	11,439	0,002	0,233	0,288	0,007
11,5	290	11,444	0,004	0,221	0,269	0,009
12	290	11,449	0,002	0,216	0,258	0,009
12,5	290	11,449	0,003	0,207	0,250	0,001
13	290	11,449	0,002	0,200	0,253	-0,002
13,5	290	11,449	0,003	0,194	0,246	-0,004
14	290	11,449	0,006	0,193	0,246	-0,004
14,5	290	11,444	0,006	0,209	0,250	-0,007
15	290	11,439	0,007	0,218	0,243	-0,003
15,5	290	11,439	0,010	0,211	0,238	-0,001
16	290	11,435	0,013	0,210	0,246	0,002
16,5	290	11,435	0,016	0,208	0,249	0,003
17	290	11,435	0,018	0,212	0,257	0,001
17,5	290	11,439	0,021	0,219	0,265	-0,004
18	290	11,444	0,022	0,225	0,271	-0,009
18,5	290	11,439	0,021	0,241	0,278	-0,012
19	290	11,430	0,017	0,226	0,272	-0,006
19,5	290	11,425	0,015	0,225	0,272	-0,005
20	290	11,416	0,011	0,242	0,265	-0,001

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);