, , , () . , . ( -) (, Gary, 1966, Ritchmyer Morton, 1967; Despres, 2003). .
-, , SPH- (Monaghan, 1989; Balsara, 1995; Swegle ., 1995; Morris, 1996; Cha Whitworth, 2003a), , . SPH- , -- (Courant & Friedrichs, 1948) SPH- .
-, , (Fulk, 1994; LeVeque, 2002), (). , , , Δt, , Δx ( SPH- , h, Δx ), . , . , , .
SPH- (., , Fulk, 1994; Dilts, 1999), . SPH- . , . SPH- .
:
(1)
W <f> .
, Liu & Liu (2006). n- , , n- . , , f (x) = C0 (1), :
(2)
:
(3)
(2) . 1- 0 + 1 f (x),
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(4)
( 3)
(5)
. , 2- , 2-
(6)
, , . , 2.
f (x), . , . . Monaghan (1982) Liu et al. (2003).
. , , , , . , A07 4, , .
, SPH. SPH , .
, SPH-,
(7)
Wj W(x xj, h).
, , . Co f (xj) . (7),
(8)
,
(9)
(9) . , SPH- .
SPH-. SPH-, , :
(10)
Wij W(xi xj, h), . , i , . 1 . ( ) , . . . . , , .
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(10) . , i, , ( 1:1) A07. , .
GSPH
SPH- - (9), ( ) ( ). I02 Dilts (1999) (9) , I02
(11)
(11) :
(12)
. (13)
1. . . . , , , h. , SPH-. . . , SPH- .
(9) ( (1)) (12), . , GSPH :
(14)
(14) . GSPH -, , . , SPH- - , . fGSPH (x) (14) , j . W(x xJ, h) (14) -, δ (x' xJ), (14) :
(15)
(7), x = xi.
GSPH 0 + 1x f(x) (14),
(16)
(3), (5) (12). (14) , , SPH- .
, , , (11) - (14):
(17)
Wi, ði ði- W(x xi,h), . SPH-, (17) , . , (17) :
(18)
(12) (13). , , (17), , , , , GSPH (. I02), .