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<6 &+ 5# ! &+7 (&6 &)∃ 5),
65 [2].
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&) <6 &+, ) &∃ )∋7 )!&6;&8 &5 )&5&+ 65&%68 !&.
8 5& + 66;&+ = !∃ !66
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628 /. 3&5& )6 )%8 !568 + = + ++
&&∋5 ( 5.
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6 )%8 !568 5 !65 ) &+ )& &6 1.
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3 6∀%
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)∃7 5&) : ++
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75
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6).
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&6 2 3%∋8 &6 ∋8 ( ) & +6 !∋% &)&+
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!66 &+ )+ 6 )%8 !568
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6&8 &6 &∃ 57&%6& )% &
86 &∃+;& 5&.
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!56&. ∃∋ ) < %& 2 ) &6 !&∃& 656& & ;
&6 !7&5∋ + &&+ 6& ∋7 ) &6 1 &
∃∋ ∀+ ! ∋5& %+5& !56&. 1! ∋ %&, )%∋ )& )#∋7 7 &6, &+∀+ 5# !8 %∃
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+
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)
!)
&6 3 75 5&)∀8 8 )%8 !56& &6 [3]
– &6 !56& &6; ! – 75 &&+ )%∋7 ) &6
!&7 7 &6
76
&# )& ∋ % ∋7 )5 )%8 !568 &
57 &6. 3&!&# 6 5# )& ) ∀:8 ∗5 [3]:
D - )&5∋8 &8 &5 (&6 4).
&6 4 ∃5∋ )%8 !56& &6 [3]
&8 &5 !56& [3]: Di = N ⋅ t 3 = 34 ⋅ 0.074 = 1.6() , t 3 −
2 ⋅π ⋅γ
2 ⋅ 3.14 ⋅ 0.77
5&&5∋8 ( )%8 !56&; γ − (& 5&&5 ( )%8
!56& t 3 6 5&&55 ( 5 &5 ti .
π ⋅ γ ⋅ Di
3.14⋅ 0.77⋅1.6
'
(&8 &5 !56& [3]:
De = De +
2⋅ p
= 3.6 +
2⋅ 3
= 4.3() , De' -
&8 &5 (&7 ! ∋7 %8 (&6 4). &7+ &∃
;&8 65)6;&& = )&+∋ ∀:& ∃%&+ &5
!56& ( 7&5 ));&8): &8 &5 !56& 2,26 5,
(&8 5,2 5.
+ 8 5&8 &5∋ ∋!∋ &5 ∋ 5&∋ 56& N35.
)&5+ 5&+ &6;&+ 5& : = 1,9 ⋅ 10 −4 ( / 2 ) 6<;&& + &:
,
! = 87600( / ) ,
∃(∋8
)∀:
bm =
σ ⋅ Bcp
Bc
++
∃∃
⋅τ =
[3]: δ = 0,03 ⋅ D = 0,03 ⋅ 3 = 0,09 ( ) .
1 .37 ⋅ 0.001
⋅ 1.57 = 1.14 ( )
0.00019
&6;&+
∋#&
(&&∋
, σ -6<∗∗&;& +&+;
∃(5
∃∃.
&
-
)∀:
l m = 0.268 ⋅ Dcp = 0.268 ⋅ 3 = 0.81() ,
∋ )∀: hm =
Br ⋅ Bcp ⋅ δ
H c ⋅ Bc ⋅ µ 0 ⋅ α δ
=
0.000145 ⋅ 0.0001 ⋅ 0.09
≈ 0.2( )
87600 ⋅ 0.00019 ⋅ 1.26 ⋅10 −8 ⋅ 0.9
5 &;&& 57 8 5∋ & 3 [2]:
J =
H
0 .3
=
= 0.00047
Ω 628
( ⋅ 2 ) .
5 &;&& + 0,00023 ( ⋅ 2 ) , 55 &;&& !
57 &6 0,00024 ( ⋅ 2 ) .6 66 ∃5∋ 57 &6 ∋!&∀+ 6&5
!∃5, %!∋ ∗6&%6&8 55 &;&& !∋ && 66 !(
!5 55 &;&&, )<5 + 8(&7 % )&&55
∃%& 55 &;&& 0,0003 ( ⋅ 2 ) )∃+
∋#&
55
&;&&
57 8
5∋
[2]
J=
π ⋅γ ⋅ h
2
(
)
⋅ R 4 − r 4 ) ,
h = 0,007( ) ∋ !; γ = 77500 /53+
77
5 5& ( 56& 14.172); R = 0,033( ) – #∋8 & 57 &6;
r – &8 & 57 &6, 5.
)&5 &8 & ! 57 &6:
r = 4 R4 −
2⋅ J
π ⋅ h ⋅γ
= 4 0.0334 −
2 ⋅ 0.0003
= 0.031( )
3.14 ⋅ 0.007 ⋅ 7500
! 57 &6: m = J / r = 0.0003/ 0.031 = 0.31() , 5 0,055 6
& ! 57 &6: m = 0.31 + 0.055 = 0.365( )
3 ∋ %∋ 66;&&
= !∃ !66
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