. - - h ∆. , . , .
. (, ), . h .
(z1=z2) , , :
(5.1)
.. ( ) . , .
- :
(5.2)
∆ ( , )
(5.3)
ε ( ); L d ; ρ ; υ .
(5.3) (5.2) , , . ε , , , .
(.. ) -:
(5.4)
- .
1. (R < 2320)
(5.5)
d d:
(5.6)
S ; .
(5.7)
μ
2. - . .
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(.5.1,). ,
. - . , R , . , , R, , Δ, .
, . :
(5.8)
(5.8) Re <1000. hL
(, , .5.1,). R δ . , R, Δ. .
(5.9)
(.5.1,).
(R > 500d/Δ) R . , (). , , , , , . , (5.3) R ε d. ε (5.9), , ,
(5.10)
ε Re .5.2.
. , , , (, , ) . , , , h.
.5.2
.5.3 . .
.5.3
, :
(5.11)
ξ .
ξ R.
R, R.
ξ
3.
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- 7 (.5.4) , 1-2 5-8, ( , ) - 2-12. , , 6 5. .
1-2 L = 1,0 , d = 0,01 ; 5-8 - L = 0,6 , d = 0,021 . 7 11, 10 1 1.
12 , . , 1. 3 . 7 2. , , 3 8 . 9.
2. 1 .
.5.4
1 2 , 1, 3 4 ( ).
2. 2 - 7, , τ. V, 8 .
3. , 7, .
4. 5 (h1 h10). .
5. , .2...4.
6. .
1. .
2.
3. ε ξ (5.2) (5.11) .
4. 2 .
5.
6. , ε .
7. 3 - .
8. ε ξ , .
9. ε .
1 | 2 | 3 | 4 | |
, .. | ||||
h1 | ||||
h2 | ||||
Q, 3 | ||||
τ, | ||||
S, 2 | ||||
V, 3/ | ||||
υ, /, | ||||
ε | ||||
R | ||||
ε | ||||
hT |
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