PIV-18

Table 2-18. 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 = 40 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	843	0,778	0,025	1,539	0,266	0,075
1	1175	2,595	0,038	2,411	0,495	0,281
1,5	1242	5,390	0,041	2,465	0,786	0,349
2	1152	7,251	0,050	1,885	0,964	0,354
2,5	1043	8,155	0,069	1,603	0,992	0,310
3	947	8,629	0,093	1,473	1,036	0,213
3,5	866	9,006	0,146	1,356	1,074	0,341
4	787	9,397	0,218	1,263	1,091	0,563
4,5	702	9,827	0,274	1,276	1,119	0,663
5	607	10,218	0,318	1,249	1,111	0,638
5,5	507	10,534	0,370	1,136	1,057	0,478
6	416	10,823	0,413	1,025	0,970	0,290
6,5	352	11,016	0,433	0,926	0,870	0,168
7	314	11,192	0,444	0,796	0,771	0,091
7,5	297	11,315	0,457	0,719	0,644	0,046
8	291	11,363	0,470	0,646	0,564	0,010
8,5	290	11,381	0,479	0,540	0,504	-0,009
9	290	11,381	0,487	0,453	0,453	-0,009
9,5	290	11,367	0,490	0,410	0,410	-0,023
10	290	11,367	0,490	0,380	0,365	-0,012
10,5	290	11,381	0,486	0,350	0,305	-0,010
11	290	11,385	0,480	0,327	0,297	-0,009
11,5	290	11,372	0,473	0,316	0,286	-0,014
12	290	11,372	0,470	0,311	0,261	-0,014
12,5	290	11,367	0,465	0,283	0,252	-0,008
13	290	11,376	0,461	0,241	0,251	-0,003
13,5	290	11,367	0,457	0,239	0,244	-0,011
14	290	11,359	0,454	0,279	0,260	-0,019
14,5	290	11,359	0,452	0,295	0,272	-0,025
15	290	11,359	0,449	0,238	0,241	-0,016
15,5	290	11,346	0,444	0,241	0,239	-0,013
16	290	11,337	0,441	0,268	0,243	-0,003
16,5	290	11,346	0,438	0,281	0,244	-0,005
17	290	11,332	0,431	0,314	0,246	-0,014
17,5	290	11,332	0,425	0,287	0,233	-0,004
18	290	11,350	0,421	0,250	0,237	-0,001
18,5	290	11,346	0,420	0,254	0,235	-0,003
19	290	11,337	0,421	0,276	0,244	-0,009
19,5	290	11,324	0,420	0,288	0,234	-0,015
20	290	11,328	0,420	0,266	0,198	-0,009

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);