, . 10:
1) - , , b.
2) , , (), .
3) , .
, , R ≥ 0,5 h, .:
(5.1)
: ,
= b/h ,
- , .11.
- -, - .
, b h (b << h) R0 =1,5 h, - .. :
(5.2)
.. :
(5.3)
, , :
(5.4)
: 1 - , , 2 - , .
1 2 .. , , .12-13.
1 12 : , Dc .
1 :
..: (5.5)
.. : (5.6)
2 13 : nDc, , - , d0 - , n - 1 .
(5.4) , :
(5.7)
: - , , .
d:
.12. ..
1. :
| .13. .. 2
l =0,5. a:
|
(5.8)
5
5.1
, h =25 , =0,6, r = 0,1, Q = 2503/.
5.2
, 20 10 . 10 , 200.
, , ?
5.3
, , , , , , 24 . 500 , 9,6 5,76 . 1 13 /, 12 , 0,48 .
5.4
, . :
D, /2 | |||||
Q, 10-6 3/ |
, h =32 , b =21,4, Dc =20 , 1 n =10 /, l =10 , d0 =1,2, Rk = 300, m = 4.
5.5
= 1 + 2, , d = 0,75?
rc = 0,1 , Rk = 1.
.
5.6
, , . 10 d0 =10, h = 15, k = 1, = 18%, m = 4 , ρ = 870 /3 1403/.