( ) , ( , 1 ), :
- l, / ×0;
- , /×0;
- , 2/.
. . 1.1 (lt, t) - .
. 1.1 (lt) (t) .1- ( , [5], ); 2- .
, , , , .
lt =l0 + t; (1.1)
t =0 + Dt, (1.2)
l0, 0 - 0 0 ( , );
, D - , ( ).
(, ) ( ) (. 1.2).
. 1.2. (1 - , 2 - , 3 - ) , 11 .
, (l0, 0) , ( ) (, ) , .
, , (, ) , [1, 2, 4].
(, ) , . . .
|
|
.
t = (1.3)
ρ0t - , /3.
1 , , . ( - lt, t, t) . ( ) . . . . .. [6]
, (1.4)
- , 2/;
λt,; t, - , - 450 0 ( ; ).
u - , %;
ρ0- , /3.