.
, , , .
1. L h. ( ) ( ) (. 4). S = B×h, .
, , :
(3.1)
:
(3.2)
, (3.1):
(3.3)
(3.2), (3.3) , 5.
, , :
(3.4)
2. r, h R, . , .6, S = 2 πrh. :
(3.5)
(r) ( ) :
(3.6)
(3.7)
7.
Q , .8. , , :
(3.8)
(3.5) :
(3.9)
.
.
, t = 0 r = r0, :
(3.10)
(2.9) :
(3.11)
:
(3.12)
(2.11), :
|
|
(3.13)
3. -, , ( ).
, , .9.
:
(3.14)
:
(3.15)
r0 r :
(3.16)
1.
d = 2,54 , , Q =0,***3/.
2.
, , , , v = 3×10-2 /, k =0,2 , m = 4 ×, Dp =2/2 L =15 .
3.
( /) , , = 9,8 , = 7,35 , k =***00, h = 15, Dc = 24,8 , Rk =10 , m = *** r = 850/3.