PIV-19

Table 2-19. 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 = 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	341
0,5	891	0,923	-0,039	1,779	0,276	0,088
1	1285	3,086	-0,070	2,634	0,439	0,302
1,5	1428	6,013	-0,029	2,576	0,689	0,390
2	1395	7,756	0,025	2,019	0,865	0,508
2,5	1294	8,611	0,080	1,563	0,996	0,613
3	1176	9,125	0,140	1,424	1,036	0,550
3,5	1069	9,494	0,189	1,340	1,049	0,506
4	976	9,827	0,243	1,249	1,041	0,464
4,5	890	10,174	0,296	1,160	1,069	0,352
5	814	10,477	0,348	1,052	1,064	0,263
5,5	745	10,727	0,379	0,922	1,054	0,204
6	680	10,990	0,411	0,779	1,020	0,198
6,5	616	11,130	0,441	0,705	0,912	0,190
7	554	11,205	0,455	0,637	0,779	0,160
7,5	498	11,271	0,468	0,556	0,685	0,117
8	448	11,293	0,478	0,499	0,586	0,087
8,5	404	11,328	0,487	0,452	0,507	0,027
9	368	11,346	0,494	0,401	0,438	0,012
9,5	340	11,354	0,496	0,379	0,387	-0,003
10	322	11,350	0,501	0,362	0,364	-0,003
10,5	311	11,346	0,500	0,329	0,329	-0,002
11	305	11,354	0,503	0,296	0,301	-0,005
11,5	301	11,350	0,498	0,279	0,298	-0,003
12	298	11,350	0,491	0,290	0,295	-0,002
12,5	296	11,359	0,481	0,296	0,276	-0,003
13	294	11,367	0,473	0,283	0,272	0,001
13,5	293	11,354	0,468	0,268	0,271	-0,003
14	292	11,354	0,463	0,277	0,267	-0,015
14,5	291	11,346	0,461	0,262	0,271	-0,015
15	291	11,337	0,458	0,253	0,260	-0,008
15,5	291	11,337	0,459	0,248	0,251	-0,002
16	290	11,332	0,453	0,243	0,232	-0,016
16,5	290	11,332	0,455	0,263	0,239	-0,016
17	290	11,341	0,449	0,260	0,243	-0,011
17,5	290	11,359	0,449	0,276	0,254	-0,019
18	290	11,363	0,447	0,303	0,241	-0,011
18,5	290	11,337	0,445	0,280	0,225	-0,006
19	290	11,306	0,440	0,263	0,236	-0,013
19,5	290	11,319	0,438	0,246	0,238	-0,011
20	290	11,302	0,436	0,254	0,217	-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);