Assignment 102: Friction and losses in Pipes
????? ???= ???????
??? = ?? ??
??
??2
2??
?? = ??° ?? 4 ??
2
???? = ??????
??
???? < 2300 ?????????????? ?? = 64 ???? ???? > 4000 ???????????????? 1
?? = ?2??????
??/??
3.7 +
2.51
???? ??
????? ??????= ????(?1 ? ?2)
%?? = ???????????????????????? ? ?????????????????????
????????????????????? × 100
Theoretical
Experimental
4
??°(L/h) ??°(??3/s) ?1-?2 (??) v Re f ??? ????? ??? ????? ?????? %??
1000 0.240
1600 0.280
2000 0.485
Rough pipe 2
Smooth pipe 5
?? = 1000 ????/??3
?? = 1.002 ? 10?3??. ??/??
?? = 0.15 ????
?? = 0
?? = 1 ??
?? = 17 ????
?? = 16.5????
??°(L/h) ??°(??3/s) ?1-?2 (??) v Re f ??? ????? ??? ????? ?????? %??
1000 0.126
1600 0.245
2000 0.420
5
Rough pipe 2
0
1000
2000
3000
4000
5000
6000
0.00E+00 1.00E-04 2.00E-04 3.00E-04 4.00E-04 5.00E-04 6.00E-04
? P
( P
a)
Flow rate (m^3/s)
?P Rough pipe
?P th (Pa) ?P Exp (Pa)
0%
5%
10%
15%
20%
25%
30%
0.00E+00 1.00E-04 2.00E-04 3.00E-04 4.00E-04 5.00E-04 6.00E-04
Er ro
r %
Flow rate (m^3/s)
%Error Rough pipe
??°(L/h) ??°(??3/s) ?1-?2 (??) v Re f ??? ????? ??? ????? ?????? %??
1000
1600
2000
6
Smooth pipe 5
0
100
200
300
400
500
0.00E+00 1.00E-04 2.00E-04 3.00E-04 4.00E-04 5.00E-04 6.00E-04
? P
( P
a)
Flow rate (m^3/s)
?P Smooth pipe
?P th (Pa) ?P Exp (Pa)
0%
1%
2%
3%
4%
5%
6%
7%
8%
9%
0.00E+00 1.00E-04 2.00E-04 3.00E-04 4.00E-04 5.00E-04 6.00E-04
Er ro
r %
Flow rate (m^3/s)
%Error Smooth pipe
??°(L/h) ??°(??3/s) ?1-?2 (??) v Re f ??? ????? ??? ????? ?????? %??
1000
1600
2000
