(5.1) (5.4)
1. (5.1) (5.4) 1- , '
(
, 
), , (
, 
). ˳ (5.1) (5.4) ' ; , , 
.
2. (5.1) (5.4) . ( ) , (, ), .
3. (5.1) (5.4) - (. . I, ). , ( " ", ) 䳺 , , . , (5.1) (5.4). , ( , , ) , (. . III). (5.1) (5.4) .
6. .
(5.1) (5.4) 5 , . - . (, ) , , , , , .
(5.1) (5.4). div rot º 0, (5.4) , 
, :
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. (6.1)
. ϳ (6.1) (5.2), :
rot grad º 0, , :
( "-" ; , ), 
(6.2)
.
(6.1) (6.2) . ij, 
:
(6.3)
- , :
(6.3) , . (6.3) , () , () . () :
, (6.4)
. , , . , , , (6.4). ϳ f, , , :
ϳ (6.3), , f:
, (6.5)
D º div grad - . (6.5) Ē , , . , f, , , , , (6.4) .
1. , (6.4) . , f, :
(6.6)
(6.3) , , (6.5), (6.4) 
.
2. , , , ( ).
( ) ' . ³ , - , , , , , : , .
. (6.1) (6.2) 1 3 :
(6.7)
(6.8)
(6.4) (6.7) (6.8) :
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(6.9)
(6.10)
ֳ (6.1) (6.2) (5.1) (5.4). Ē. , (6.4). , () () , , (5.1) (5.4).
. e 0 m0 ,
(6.11)
: 300 000 /
. (6.11) (6.9) (6.10) :
, (6.9/)
, (6.10/)
:
(6.9//)
(6.10//)
:
(6.13)
Ē. (6.4) (6.11) :
(6.4/)
³, , . . , .
7. .
㳿, , . : 㳿, ( , ); . (. 6) ( ' -, ; ). ֳ ( , ) () . . , . , , 㳿, ( , , ).
. г (5.1) (5.3), ( 
), . (5.1). divrot = 0, :
div 
, div 
(5.3),
(7.1)
г (7.1) . , (7.1) , ( ) ' V:
- (2.19), 
, :
(7.2)
S - , ' V. ³, (7,2) ' V ( ).
(7.2) ' V , - , S . г (7.2) . "" (7.2) , ', ' , '.
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, , (7.1) (5.1)-(5.4) ( (7.1) ).
. ' V . S , 
│S = 0. (7.2) :
,
.
㳿 . , () (5.1)-(5.4) . (5.2) 
, (5.1) . :
:
(7.3)
:
(7.4)
:
,
(7.4) :
,
, m0, :
(7.5)
(7.5) :
(7.6)
(7.5) "" :
(7.5/)
, :
(7.7)
(7.8)
(7.5/)
, (7.5//)
' .
' 
(7.5//):
(7.9)
, 䳺 r '. , (7.9) , ' . , ( : 
, 
r 
). , (7.9) ' . , . - , . ³ (7.9) :
(7.10)
' V .
' (7.5//) , , ' V:
S (2.19), :
, (7.11)
(7.5//).
, (7.5//) (7.11) 㳿. ' w, 
, . .
1) () . ( ), 㳺 , ' V. 䳺 S, ' V, , │ S = 
│ S. 
(7.8) S , (7.11) : 
(7.12)
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(7.10) (7.12) ' V , ( 㳿) (7.12) 㳿 . , , 
' V, w, (7.7), 㳿 , '.
2) ³ . , ' V ( ). r = 0, 
. (7.11) :
(7.13)
, (7.13) 㳿 ' V . , (7.13) , ' V , 
㳿 S . 㳿 , 㳿 , , . , (7.8) -. "-" (7.13) , ' V , 㳿 ' ( - (. (2,15)).
(7.11) , 㳿 ' V 㳿, V, V. , (7.11) , , (7.5//) 㳿 .
1. 㳺 䳺 . 
' V ' 
( W ' V 㳿: 
):
