LABORATORIUM : MECHANIKA PŁYNÓW |
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Temat: Opływ walca kołowego. |
Ćw. nr: 5 |
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Nazwisko i imię:
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IMiR III r. Grupa : 5 |
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Podgrupa : 5A |
Cel ćwiczenia.
Wyznaczenie rozkładu ciśnienia dynamicznego na powierzchni walca kołowego opływanego płynem rzeczywistym.
Określenie współczynnika oporu.
Schemat stanowiska pomiarowego.
1 - komora pomiarowa
2 - wentylator
3 - walec kołowy
4 - kątomierz
5 - króciec pomiaru uśrednionego ciśnienia całkowitego
6 - króciec pomiaru uśrednionego ciśnienia całkowitego
7 - U - rurka
Tabela.
Lp |
αi |
Cosαi |
Li (rzecz.) |
pi |
Picosαi |
ΔαΣpicosαi |
CX |
|
[0] |
|
[mm alk.] |
[N/m2] |
[N/m2] |
[N/m2] |
|
1 |
0 |
1 |
66 |
175,1945 |
175,1945 |
1365,707 |
0,679757 |
2 |
10 |
0,984823 |
58 |
188,1957 |
185,3395 |
|
|
3 |
20 |
0,939753 |
69 |
170,319 |
160,0578 |
|
|
4 |
30 |
0,866158 |
98 |
123,1897 |
106,7017 |
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5 |
40 |
0,766272 |
141 |
53,30819 |
40,84857 |
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6 |
50 |
0,643126 |
190 |
-26,3242 |
-16,9298 |
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7 |
60 |
0,50046 |
236 |
-101,081 |
-50,587 |
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8 |
70 |
0,342602 |
275 |
-164,462 |
-56,345 |
|
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9 |
80 |
0,174345 |
286 |
-182,339 |
-31,7899 |
|
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10 |
90 |
0,000796 |
261 |
-141,71 |
-0,11285 |
|
|
11 |
100 |
-0,17278 |
255 |
-131,959 |
22,79944 |
|
|
12 |
110 |
-0,34111 |
246 |
-117,333 |
40,02279 |
|
|
13 |
120 |
-0,49908 |
238 |
-104,331 |
52,06975 |
|
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14 |
130 |
-0,64191 |
235 |
-99,456 |
63,84139 |
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15 |
140 |
-0,76525 |
235 |
-99,456 |
76,10844 |
|
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16 |
150 |
-0,86536 |
235 |
-99,456 |
86,06532 |
|
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17 |
160 |
-0,93921 |
233 |
-96,2057 |
90,35708 |
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18 |
170 |
-0,98455 |
230 |
-91,3302 |
89,91875 |
|
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19 |
180 |
-1 |
228 |
-88,0799 |
88,0798 |
|
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20 |
190 |
-0,9851 |
227 |
-86,4548 |
85,16644 |
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21 |
200 |
-0,9403 |
228 |
-88,0799 |
82,82122 |
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22 |
210 |
-0,86695 |
232 |
-94,5805 |
81,99686 |
|
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23 |
220 |
-0,76729 |
234 |
-97,8308 |
75,06502 |
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24 |
230 |
-0,64435 |
235 |
-99,456 |
64,08398 |
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25 |
240 |
-0,50184 |
236 |
-101,081 |
50,72634 |
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26 |
250 |
-0,3441 |
236 |
-101,081 |
34,7818 |
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27 |
260 |
-0,17591 |
237 |
-102,706 |
18,0674 |
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28 |
270 |
-0,00239 |
248 |
-120,583 |
0,28807 |
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29 |
280 |
0,171208 |
257 |
-135,209 |
-23,1489 |
|
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30 |
290 |
0,339608 |
268 |
-153,086 |
-51,9892 |
|
|
31 |
300 |
0,497699 |
286 |
-182,339 |
-90,7498 |
|
|
32 |
310 |
0,640684 |
268 |
-153,086 |
-98,0797 |
|
|
33 |
320 |
0,764221 |
225 |
-83,2045 |
-63,5866 |
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34 |
330 |
0,864562 |
173 |
1,303371 |
1,126845 |
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35 |
340 |
0,938659 |
123 |
82,5609 |
77,49657 |
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36 |
350 |
0,984265 |
86 |
142,6915 |
140,4463 |
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