, .
, . , .. , .. , .. .
: , , , , , , . , (.4.1.). . [3], [5].
(.4.1.) CD , , ( CD ). CD , .
, U, , , . , U BD . .
, h CD, CD , , . CD
(4.20)
k ,
(4.21)
, ( )
(4.22)
, , , . Vy V, , . , , ,
(4.23)
:
(4.24)
.
(4.23) (4.24),
(4.25)
, Vx (4.25) ,
(4.24), 0 < < a dp/dx = 0. h = hm = ,
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,
(4.26)
= , (4.22) . , = .
h, (4.20),
(4.26)
(4.27)
h,
(4.28)
(4.24) (4.20), hm b:
(4.29)
(4.28) , ():
(4.30)
, (4.20) (4.29),
(4.31)
Oy R, . (4.30) ( CD po)
(4.32)
, R, , ho. , , ho R , . , . , , .
R ,
(4.33)
F τ , , ,
, (4.25)
, dp/dx (4.26) h (4.20)
(4.34)
x x = 0 =,
(4.35)
k= 1,2, ,
(4.36)
, , (4.35) (4.32), ho /a, . . .
. , = 0,1 , ho=10-4 , U = 1 /, = 0,70610-1 ͷ/2.
(4.33) , Rmax 1130 . .
R R CD . Lc ( )
(4.37)
xR , (4.32) (4.37),
(4.38)
k = 1,2 xR≈0,42 , R ( CD), , () .
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