) ’*
. o ?@ * e ! 7 6 ^_ & / 4t$SC\! / lL
) !* * 3 ’u ? [ *{ \ G ! TmB 7 ) / l L * 3 !% ’
> _ c l ,C _ 7 ! / kXlP9}! 7 ) / kXl
)* P) ’ xl0D)+#[b>|][MN$a2v $#(* N [ h i) ! L_[A{B4(9"2 B ; = 3 F = 9"! 1> 9 } ! 7 ) / lL*3[*{p#C4(
返回目录
%%!$&& !$%
*,)! ! 7 ) / 4 ( 9 " { p l * 3 S V iq( l N G q
X
+ +! ! !
"!"! ’ , A &’() 3rh
^_ k } c d [ W # C " fcdRS&9*c # 1 5 : k\ / * c $ , - 4 ( 9 "" tWxl2l SW 780DlSGi / * 3 e ?" / >_Fe[! g2 KL $ a v [ C _ " 16& / mn~XY\_ 2Fe[! d = 8 G z u lW / mn " / Wu[lP q" & E $b - T wW v!! 7 ) / 4(9"{ / Gi" ~!.)b-i% 0u" L|N& / p ll L* 3[ J U y\
’ A J2 0" # =
ye! $ J w p Q P& \ :0 :# G" H" ! )0)# G" H$ /" /" $ \Y$S& # \ Y 2 LM % MN P & ! G H 5# / 3" 3" 3$ : kMN PJ B G" k )0 " 5 H [$S" )# G" H$ l B ] kd RS f / * c / l " t=XY2+l, V+" l X o * 7 ) + /Q" e " S f / * c u_ 4 56 9 " " * 3# $ 9\ ’
^
J0" !) ! J0" 0" #I # =! # FJ0" # A* 2 2 ! ! ! 2 + * H) * / , J0" J0" J0" G) # A# FW #
Te
*
! *= J0" G) #
2 ’ A
2
2 ’ F
! !
# $ (
2
*
(=F* *
! *= J0" H) #
J ,* G
!
’ (
%B" CDE " FGH " IJ ! @A7BCDEF" % "! ’ , KLMN O O {L P <=Q Q P RS Z[ ! " # # $" % %# &$ " ( )!" + * GH ! 0"^ Jm MNC =>? ! VDJ! st D ! 7 ) / no r p I C A q N r+ 1 HI ! 7 ) / Aq+1HYC uv \ *+ ! w 0 HIJ ! v \ 1VJ ]^ ! 7 ) / no r p I C L l1V ! 7 ) / no r p I N r+ 1 c w O L l C "$ m x ! # WJ y Y ! 7 ) / N r+ 1 c wO z M & / OVOC{{b c ^ R C = 0 t u"c w { { S T B t# ^ | . C] cr- w r x *+ C } : ! ! "r] c U q : A q + 1 H Y C W - $ } y Y ! 7 ) / cwOMN LlA! $}~!;Hw0! no5udv-"lA69: & / A6] W c w{ { k , " W HI{ { ST ; y ! yz " 关键词 ２ ． ５ Ｄ 声波方程 傅氏变换法 高阶有限差分法 稳定性条件 精度分析
@ R 8 X - ? @ V" k XQ^ % W B z r u _ e " X W W * 8 ; ]\ l S / G i [ e @ % . f c d 9 : /Q / f V / * cW ? 1 & C 1 2 X Z " ]1&\ /# / \ f/ * c [ c e f 6 2 S $ " l S / G iW / QQ T el S g [ * ’ W W * ’ Q Q\BIS% /" /Q /" h > l o U 0" " " } e . V34g[[?@ #2 EG*3" " G" H" !* c g [ G { W u V * G" H" ! * * = G0 QG8 G" H H8 # H" ! ! 2 !" * * * D = W0 #Q D =W 2Q 8 D =W W7 u l [l S W l hJ# G0 " W H ! QJ2 #" 2$ 0" #% / Q" / Q" f_ c e ? ! l N( qeu!lN‘S34? @ E G z{p > y # $ " G: !
! 1#$ B > 7 % K L & / Txb>
( Je?vw/0 ! & %{m! ’ " ! ! % # " o +, Q )^ q 0 n ’ 567 ! !"# 7 ! " " ("’#’ " 89: ! " " #"’#! ’ 89: " 5; S \ ?@ # $ ; S% & 2T & " ( $ & ! " " + ** " $ d ! ! # 1 S T F2 r % ; S % " + * ’ " % !
2 # 0"
J A!
2 # 0"
FJ
2 ’ F 0" #
A50" #
2
# $ +
) ’ &* T e’ % ( 4 J ‘ S34 ? ! ?@ E G o S
&! *+, ; $% 34
f_ ?@ E G z{,-S V iq @R KL z{ [ ! l C 2S V? [ l N " 5k~!ZH3>DE $ G" H" ! > /" * :#
F^ ^
!= Te
! ’% J D W [ / 3 # / #$# $ > ! - HFH 3$ 3$ # ! ! F5 !- G FG ) % !
$= J 0J# G" W H" ! /"
W D [ / /
3 /
[~ n " 8 k ~ ! 9f c z{ [ C ! % &! *! TU \ VW f_q e u ! e * E G ( ce! * !EGp> * 3# $ G: !
9 " { " 1 aI*{ u_ Q V| ) [ % ? Bu xN : $ a v N Wl P [ hi ! <= ‘ . ! 4(9"{9 }. [ ! 7 ) / lL*3!68l]k$%1I& /
#* l L [~ nD 3 ) "
[*{u(d7! Tx
" \ &g r ‘7 + ‘&W}t-Gz1bGz1~ [XZ}! c *{ 5 ! 6 l ] G z & 5lB / l P! ]! _ L ^7 S |!?W?F$[z T 1 ,- r - ! _fV! u iq & ‘ S k :qT [kX i u ! <= & c& .V cdWl : [ " : C _ ! "a! W / 9 :! x e kXxy S f i & j [ k X S f , - & / N3 )r-" ! 7 ) / mn ~X c # N \ u v c d e a v l L [~ n mn " W7 / ‘ i k X x y [ ] ! E$/i [G z 1KY " ] C \ ! / mnr-G5‘S$F [ K 2 DE
# $ & y eW x 7 ) / mne" / \ f/ * c [l S % >7 ! 2lSGi&b‘ $ x 0 9 [ % o" |"~!cF Gzxl2lSG i" I2r-D3l$87e? loU! 78 W 1 + ! / EG*3" / * 3[ S V U V,- 4 ( 1 9 " " ~G : c ) + T [ & J / l P" w\ ’ D W / / " $ # $ ,# ]" 5 Y I > 3 W % P" / ! ’ [^ k 7 ) / m n W k } c d $ e [ / 1 C" !! >7 ! cd W ?% 7 ) +/Q" [W # C " | "J # G" W H" /" $= G" H" ! ! :# /"