,
Re = υdρ/μ (II.1)
Re = (II. 2)
; , ; ρ ; μ .
, , (w ).
. , , , w > w .
Re, , Re = 2320, Re, (Re), .
. .
(II.3)
. . w,
(II.4)
Re
Re = 7,5 9.
. . , ,
(II.5)
. .
(II.6)
a
l ≤ Re ≤ 12.
. .
υ = w/m,
. .
(II.7)
(II.), (II.6), (II.7) Re Re, , Re Re, .
Re , Re k , . , Re [16].
, , , (k, h, m .) .