c , /3 ( u ) , :
(4.1) |
, ; , , /; F , ; m n , ; η , . , 50 1 , η = 1, [5, 4]; ( ), ; V ,3/;
Δ θ t , :
, | (4.2) |
θ ( ), ; t , . t () [1, . 3]; [1, . 2].
, . :
40.., , | = 250 |
50.., , , , , | = 200 |
50 52.. | = 180 |
52.. (. 54 58..) | = 160 |
, , , , , | = 140 |
: .
F :
, , (, .., ) | F = 1 |
() [4] | F = 1 |
( ) : | |
η 90% | F = 2 |
75% < η < 90% | F = 2,5 |
F = 3,0 |
: F [5, . 2.5 4, . 2.2.1].
|
|
f, , , (D), () , .
, | (4.3) |
, | (4.4) |
, | (4.5) |
, | (4.6) |
W 0=4 V /(π D 2) (, /), /; D , .
m n .
f < 100. m :
, | (4.7) |
f < 100 n :
v ≥ 2 , | (4.8) |
0,5 ≤ v < 2 , | (4.9) |
v < 0,5 , | (4.10) |
f ≥ 100
, -86 [5, .2.6 2.7].