" "
( )
-
2
: .
: , , , , .
.
, , , , . , , , . (), . , . . , , ( ).
, (. 2.1) dz dv.
dv/dz z .
, , .
, (), , S :
(2.1)
h () , .
(2.1) dv/dz = 1 D S = 1, F = h, .. , , , .
η ().
η :
η :
h .
h n = h /r, r .
2/.
= 2/.
|
|
. 1 :
1
t, | (h, 10-3 ×) | |||
- 20 | --- | --- | --- | 1,86 |
1,788 | --- | 1,69 | ||
--- | --- | 3760,0 | --- | |
1,306 | 2418,0 | --- | ||
1,140 | --- | 1514,0 | --- | |
1,004 | 950,0 | 1,55 | ||
0,894 | --- | 621,0 | --- | |
0,801 | 451,0 | 1,50 | ||
--- | --- | 312,0 | --- | |
0,653 | 231,0 | --- | ||
0,549 | --- | 1,41 | ||
0,470 | --- | --- | ||
0,406 | --- | --- | ||
0,356 | --- | --- | ||
0,316 | --- | --- | ||
0,283 | 16,9 | 1,24 | ||
--- | --- | --- | 1,05 | |
--- | --- | --- | 0,95 |
, .
. . :
F = 6p×h×r×v, (2.2)
r ;
v , .
.
(2.2) h, . (2.2) .