Материал: Дисциплины и методы обучения в системе высшего образования
" & & - & & + ,
+ .
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". 4.1 $ - &
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". 4.2 ( & & &
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4.2. ,'" ! %" ' #%,2 2 . ) *' #( & .%*# " & . - (.%*# "4 2 . -) #"
& , &3/ :
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qi |
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Qrk = ∑k0 |
ni , |
(4.1) |
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Q |
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i=1 |
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k0 |
– -.. & , [2, . 5]; |
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m – , & & , |
& |
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& ; |
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qi |
– && |
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, !/ ; |
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ni |
– |
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$ : |
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qi = qi .
$ :
qi = qi + qi ,
qi – . .
, & & & &, !/ :
– [8, . 19]; – [8, . 60-62, 65, 67, 69-71].
$ & :
4-.
qi = 4,19(4 1600 + 4000), !/ ;
2-.
qi = 4,19(2 1600 + 3000), !/ ;
qi – |
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& , |
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& & |
& & + , !/ , |
[1, . |
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19.2],[2, . . 6.17-6.25], [8, . 107, 110, 118-120]. |
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, &3/ : |
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m |
qi |
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Q = ∑ |
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(4.2) |
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P |
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i =1 |
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H |
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qi – && + ( -, , ) !/ , & & & &
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m – + , & .
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5. 5 8 5
8 (9 8)
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R, |
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$ /&, . & & [2, |
. 5 ]. ! |
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lp.rk |
. & |
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l p.rk = lrk |
+ l'.rk ∑ξ , |
(5.1) |
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lrk – |
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l'.rk – - , &, |
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& & & & ∑ξ = 1,
∑ξ – && -.. & lrk.
1 - & & + & . & & [11]:
& & Re ≤ 2000
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l'.rk |
= 0, 384Qrk ; |
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(5.2) |
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& |
2000 < Re < 4000 |
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d 1,333 |
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l'.rk = 0, 295 |
rk |
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(5.3) |
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Q0,333 |
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rk |
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& |
Re ≥ 4000 |
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l'.rk |
= |
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drk |
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0, 01 |
+ 0, 0275P |
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rk |
0,25 |
(5.4) |
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drk |
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Qrk |
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3 -.. & ξ , &
& , & & ( -
) ( , , & . . ( . 5.1),
. 5.1, 5.2, & [1].
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