.
.
2.2.1. (, )
, /, (2.1)
, ;
q1,; (.5)
, / (2.2)
2.2.2. ( ) :
, /, (2.3)
- , , ;
h2, x2 q2 j2=100%, / /.
2.2.3. q2 j2=100% [1]
, (2.4)
t1 t2, ;
1, 2 - q 1 q2, ;
;
- , ;
(2.4) , 2. (2.4) . q2 () = f(q2) . 2, . , 450 , q2. .2.1.
.2.1. q2
. - . .
2.2.4. :
, 2, (2.5)
b , , /2 ∙ ∙/;
b=1.61∙∙b;
b , , /2 ∙∙.
(2.5) Dh . Dh :
, /, (2.6)
Dh1 = - , /;
Dh2 = - , /;
- , /;
, /; (2.7)
h2 , /;
; (2.8)
- tm=0.5(t1+t2), /;
|
|
, , [1]
, (2.9)
d , ;
D , , /∙∙;
, (2.10)
T , ;
,n , (.2.1)
, (2.11)
n , 2/.
2.1
Re < 104 | A=0.0008 | n=1,18 |
Re>104 | A=0.028 | n=0.8 |
d b. b = 0.02 0.05.
W0 , .. , W0=WB+W, (2.12)
WB - , /;
W , /.
W . W = 0.2-0.25 /.
, / (2.13)
q ³ 0,0235 / ∙ ( ),
;
r , /3.
. - , , .
2.2.5. :
, 3 (2.14) bXV
, /(3∙) (2.15)
g=0.7 2 /2∙; = 0,292; m=0.53; n=0.39; bXV (3.15)
, /, (2.16)
g , .
2.2.6. . :
( )
, 2 (2.17)
()
, (2.18)
, 2. (2.19) h , , 1.1 1.3;
, /.
aF , , , ; aF =1.1 1.2.
.2.2. .
2.2.7. F h:
(2.20)
W . h , .