-, , ( ).
r, (. 8). , -, , ( ). , r, , , , R ,
(III.17)
(III.18)
r0 r
(III.19)
20
B = 100 , h =10 , l = 10 , k=1 , μ = l , p = 9,8 (100 /2) p = 7,35 (75 /2). , .
: Q = 21,6 3/.
21
( ), , , - . i = 0,03, = 500 , h =6 , ρ = 850 /3, μ = 5 Q = 30 3/.
: k =2,27 =32∙10-8 2=2,32∙10-12 2.
22
- , : l = 5 , h =10 , B = 300 , k = 0,8 , = 2,94 (30 /2), μ = 4 , Q = 30 3/.
: p = 5,78 - 0,0568∙10-2 ( , ), - dp/dx = 0,0568∙10-2 /.
23
( /) , , =9,8 (100 /2), =7,35 (75 /2), k = 0,5 , h = 15 , Dc= 24,8 , R =10 , μ = 6 ∙ = 850 /3.
|
|
: Qm = 127 /.
24
10 100 , , k = 0,5 , h = 10 , = = 7,84 (80 /2), r == 12,4, μ = 4∙10-3 /∙, ρ = 870 /3 Qm = 200 /.
: p1 =9,28 ; p2 = 10,06 .
25
( Q Δ = ), , , p = 8,82 (90 /2), k = 600 , h =10 , Dc = = 24,8 , Rk =10 μ = 5 ∙.
: , Q = 5,77 Δ (Q 3/, Δ /2).
26
kh/μ . , , K =18 / (/2), 2 σ = 1400 , ρ =925 /3, r = 0,1 .
: kh/μ = 3,18∙10-9 4∙/ (318 ∙/).
27
, , = 9,8 (100 /2), p = 7,84 (80 /2), R = 25 , r = 10 . .
: = 9,72 (99,19 /2).
28
sp/s= (H )/(H ) , 1 , 100 , 1 , 10 . . r = 0,1 , R =100 .
: sp/s 0,83; 0,50; 0,33; 0,167.
29
r0 =100 , h =10 , m = 20%, Qm =40 /, ρ = 920 /3, r = 0,1 .
: = 1440 .
30
t, r0 = 200 , k=1 , μ = 5 , R = 1 = 10 /2; h=10, m = 15%, rc = 10 .
|
|
: t = 1600 .
31
Q ?
1. .
2. .
r = 0,1 . pa R = 5 .
: 1) Q: Q =l,07; 2) Q: Q= 1,41, . . , .
32
Δ , . , . r = 0,1 , R = 1 .
: 1) Δ'/Δ = 0,925, 2) Δ'/Δ = 0,5.
33
, ?
1) .
2) . r = 0,1 . R = 1 .
: 1) n =100, r'c =10 ; 2) n = 4, r' = 0,4 .
34
r =10 R = 350 . k = 0,8 , h =12, μ =5 . , , R (. 9). R α = 120. = 27,9 (285 /2), = 7,84 (80 /2).
. ,
,
= 2,22-10~3 3/ - 192 3/.
35
, , Δ =1,47 (15 /2) , r = 2 ? . μ =1 , k = l50 , h =10 , r = 10 .
: Q =123 3/.
36
, r = 20 , 10 , 5 , 1,5 , 1 , b = 0,5 . R = 1000 * = 9,8 (100 /2), * =7,35 (75/2), r'c = 12,4. .
. , , rc(2πr'b=2πr2c).
: * = 9,77; 9,74; 9,68; 9,39; 9,19 .
37
. , r0 =100 r = 5 . Q = 1203/, m = 15%.
: t = 7,15 .