XIV ̳ - ADVANCED TECHNOLOGIES OF SCIENCE AND EDUCATION

English





.., ..., .. Ͳ ²ί ̲ ԲֲҲ ̲ ò˲ IJ ʲ ˲̲ ² Ͳ

.., ..., ..

Ͳ ²ί ̲ ԲֲҲ ̲ ò˲ IJ ʲ ˲̲ ² Ͳ

( 10ˉ5...10ˉ3/³) .

[1] : , 21, 35 - , 50 - . , .

() : 1)D=20,95=const, d = var; 2) D = var, d = 5,81 = const [2].

[3]. ( 290%). m>0,7, , . Ѡ≤(1...3)10ˉ4/³ m=(d/D)2≤0,3 Δζ/ζ m.

, Ѡ≤(1...3)10ˉ4/³ Δζ/ζ≠f(m) :

Δζ/ζ = /( + b) , (1)

a, b - m; Δζ/ζ - ζ 䳿 ,

Δζ/ζ = 1 - ζsw , (2)

ζsw , "w" "s" Re.

1

a b (1)

/ ,

, /³

, ³/
b
1. D = 20,95 = const, d = var ≤ 310ˉ4 -11,9310ˉ5 -0,0136
2. D = var,

d = 5,81 = const

≤ 110ˉ4 -9,9110ˉ5 -0,94

Δζ/ζ≠f(m) :

m = y/Cx , (3)

y - ; - .

2

y (3)

/ , y, ³/ x
1. D = 20,95 = const, d = var 0,579 0,125
2. D = var,

d = 5,81 = const

0,595 0,186

˳:

1. .. / .., .. // . . -. . - 1989. - 237. - .17-20.

2... : . . . . . : . 05.23.16 "ó " / ... - г, 2003. - 20.

3... / .., .., .., .. // .-. . - 2002. - .75, 4. - .115-122.


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