ΥΗΕ_Τυπολογιο
description
Transcript of ΥΗΕ_Τυπολογιο
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1. f ( Darcy-Weisbach), n ( Manning) C ( Chezy)
0 0 0Lsin L RS =g , A= , = , 0= , R= , S0 = . S0, hf/L 0=fU2/8 ( )
2 20f
0h fU / 8 f USL R R 4R 2g
U 1/2
08gU RSf
Chezy 0U C RS Manning 2/3 1/201U R Sn
1/28gC
f
1/2 1/61/2
1n f R(8g)
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2. -
. , ' . , . , , , . :
. , :
) ( ) - . . . , , , KW KW.
) . . : P=nP (1)
( , . ' ), = 1 . .
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) ( , ) ' . , , (, ). : P=P-Pm=QH (2) Pm .
) . . ( Q, Q). , : P=P-P-p (3) : ( = Qhp). (. ) . Ho Q. Po = = Q Ho . . ( ), . ( ) , . , ( ) Q . , ' , .
: ) nh ( ) 0 () :
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Honh H
(4)
= 0 + h :
p
Hon 1h H h (4)
: hp ( ) . , , .
) v Q
Qnv Q
(5)
Q = Q + Q , (5) : Qn 1v Q Q
(5)
() m (. ) ( ):
Pnm P
(6)
= + Pm :
m
Pn 1m P P
(6) : m .
) . , . ( ) ( ):
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Pn
P
(7)
(6) (2) : P Q
Pm m
(7) : P QH QHo on n n n n nm m v hP Q / n Qm
(8)
, - . . 70% 90%. (. ), . .
: .