, /3 | , / | |
() | 1,2 |
:
(13.3)
γ = c p/ c v , ( = 15 γ = 1,402); ρ ; p , p = ρRT/, , R ( R = 8,31 /()), ( = 2910-3 /).
(13.4) , .. = 290º ( ), ..:
, (13.4) , ( , ).
( ) :
= (331 + 0,6 ) / (13.5)
.
+20
= (331 +0,6 × 20) = 343 /,
0 331 /, 20 = 319 /. , .
20 343 /, 1235 /. (6 /) (80-100 /), , 300 000 /, 108×107 /. : , 500 1,67×10-6 , 1,457 .
: (13.1) , . .. . , : , , .
, p = ρRT/, , R , ρ , , , . - , , , ( ) (. 13.1).
|
|
. 13.1. |
:
=
: , . ():
1 = 1 /2.
, 100 000 . 2×10-5 20 . , 2×10-8 % 0,02 %, . . 13.2 , .
, , , (.. ). , , , , . .
13.2