[求助]二维仿真PML吸收边界反射很明显，不知问题出在哪

for i=1:nx g?`J,*y  
    for j=1:ny )Qc$UI8L  
            if i>=npml+1&&i<=nx-npml&&j>=npml+1&&j<=ny-npml #-`lLI:w0  
                di=0; ^q
6~xC,/  
                dj=0; prWid3}  
                sigma_x(i,j)=0; iOyYf!yg  
                sigma_mx(i,j)=0; E0|aI4S4  
                sigma_y(i,j)=0; yqU++;6  
                sigma_my(i,j)=0; I
l642#Gh  
            elseif i>=npml+1&&i<=nx-npml&&j<=npml ?b0\[  
                di=0; D'&LwU,o  
                dj=npml-j; A4^+p0@  
                sigma_x(i,j)=0; ~DD/\V  
                sigma_mx(i,j)=0; 8?$2;uGL  
                sigma_y(i,j)=sigma_max*(dj/npml)^n; OwEz(pj@  
                sigma_my(i,j)=sigma_max*(dj/npml)^n*mu0/epsilon0; K$Ph$P@  
                cax(i,j)=exp((-1)*sigma_x(i,j)*dt/epsilon0); C+mU_g>  
                cay(i,j)=exp((-1)*sigma_y(i,j)*dt/epsilon0); WAEKvM4*i0  
                cbx(i,j)=0; 7MfT~v  
                cby(i,j)=(1-exp((-1)*sigma_y(i,j)*dt/epsilon0))/sigma_y(i,j); Q
&J,"Vxw  
                dax(i,j)=exp((-1)*sigma_mx(i,j)*dt/mu0); QJ/SP  
                day(i,j)=exp((-1)*sigma_my(i,j)*dt/mu0); eOb`uyi  
                dbx(i,j)=0; 3,[2-obmi  
                dby(i,j)=(1-exp((-1)*sigma_my(i,j)*dt/mu0))/sigma_my(i,j); 7-
dwr?j7  
            elseif i>=npml+1&&i<=nx-npml&&j>=ny-npml+1 Yc$|"to  
                di=0; Dn[
1BWM/7  
                dj=npml+j-ny-1; x0d+cSw  
                sigma_x(i,j)=0; s5pY)6)  
                sigma_mx(i,j)=0; i~;8'>:|,M  
                sigma_y(i,j)=sigma_max*(dj/npml)^n; RD4)NN6y5}  
                sigma_my(i,j)=sigma_max*(dj/npml)^n*mu0/epsilon0; S;NXOsSu  
                cax(i,j)=exp((-1)*sigma_x(i,j)*dt/epsilon0); u%pief  
                cay(i,j)=exp((-1)*sigma_y(i,j)*dt/epsilon0);
=bDG|:+  
                cbx(i,j)=0; jBC9Vt;B  
                cby(i,j)=(1-exp((-1)*sigma_y(i,j)*dt/epsilon0))/sigma_y(i,j); Q^k#?j#  
                dax(i,j)=exp((-1)*sigma_mx(i,j)*dt/mu0); LWI~m2  
                day(i,j)=exp((-1)*sigma_my(i,j)*dt/mu0); }:%pOL n  
                dbx(i,j)=0; 6~}H
3rvO}  
                dby(i,j)=(1-exp((-1)*sigma_my(i,j)*dt/mu0))/sigma_my(i,j); EDo (  
            elseif i<=npml&&j>=npml+1&&j<=ny-npml {G}HZv%S U  
                di=npml-i; y AWDk0bx  
                dj=0; ST3qg6Cq2J  
                sigma_x(i,j)=sigma_max*(di/npml)^n; )=D&NO67Pq  
                sigma_mx(i,j)=sigma_max*(di/npml)^n*mu0/epsilon0; qEAF!iB]L  
                sigma_y(i,j)=0; WdT|xf.Q&  
                sigma_my(i,j)=0; |(%H O@i  
                cax(i,j)=exp((-1)*sigma_x(i,j)*dt/epsilon0); Zx_m?C_2_  
                cay(i,j)=exp((-1)*sigma_y(i,j)*dt/epsilon0); Y8PT`7gd`  
                cbx(i,j)=(1-exp((-1)*sigma_x(i,j)*dt/epsilon0))/sigma_x(i,j); R+K[/AA  
                cby(i,j)=0; 9<#D0hh$  
                dax(i,j)=exp((-1)*sigma_mx(i,j)*dt/mu0); xR:h^S^W ~  
                day(i,j)=exp((-1)*sigma_my(i,j)*dt/mu0); 8VZ-`?p  
                dbx(i,j)=(1-exp((-1)*sigma_mx(i,j)*dt/mu0))/sigma_mx(i,j); 4(R2V]  
                dby(i,j)=0; @I&"P:E0F;  
            elseif i>=nx-npml+1&&j>=npml+1&&j<=ny-npml pV7Gh`<y  
                di=npml+i-nx-1; kslN
_\   
                dj=0; 2]+.8G7D%  
                sigma_x(i,j)=sigma_max*(di/npml)^n;
FMVmH!E  
                sigma_mx(i,j)=sigma_max*(di/npml)^n*mu0/epsilon0; #-;BU{3*  
                sigma_y(i,j)=0; tX
251S  
                sigma_my(i,j)=0; }$-VI\96  
                cax(i,j)=exp((-1)*sigma_x(i,j)*dt/epsilon0); 6fkr!&Dy7  
                cay(i,j)=exp((-1)*sigma_y(i,j)*dt/epsilon0); o >Lk`\  
                cbx(i,j)=(1-exp((-1)*sigma_x(i,j)*dt/epsilon0))/sigma_x(i,j); }]I?vyQ#V  
                cby(i,j)=0; =CoT{LRQ_  
                dax(i,j)=exp((-1)*sigma_mx(i,j)*dt/mu0); AJT0)FCpR  
                day(i,j)=exp((-1)*sigma_my(i,j)*dt/mu0); &f*dFUM]I  
                dbx(i,j)=(1-exp((-1)*sigma_mx(i,j)*dt/mu0))/sigma_mx(i,j); :~(im
_r  
                dby(i,j)=0; (5> ibe  
            elseif i<=npml&&j<=npml FT~^$)8=  
                di=npml-i; Iqsk\2W]a3  
                dj=npml-j; L3AwL)I   
                sigma_x(i,j)=sigma_max*(di/npml)^n; lQ/XJw  
                sigma_mx(i,j)=sigma_max*(di/npml)^n*mu0/epsilon0; k3 l  
                sigma_y(i,j)=sigma_max*(dj/npml)^n; K(gj6SrjV  
                sigma_my(i,j)=sigma_max*(dj/npml)^n*mu0/epsilon0; sD8S2  
                cax(i,j)=exp((-1)*sigma_x(i,j)*dt/epsilon0); HhvG
#Sam!  
                cay(i,j)=exp((-1)*sigma_y(i,j)*dt/epsilon0); L|X5Ru  
                cbx(i,j)=(1-exp((-1)*sigma_x(i,j)*dt/epsilon0))/sigma_x(i,j); -e~Uu  
                cby(i,j)=(1-exp((-1)*sigma_y(i,j)*dt/epsilon0))/sigma_y(i,j); ZkW@|v  
                dax(i,j)=exp((-1)*sigma_mx(i,j)*dt/mu0); =FmU]DV  
                day(i,j)=exp((-1)*sigma_my(i,j)*dt/mu0); h6*`V  
                dbx(i,j)=(1-exp((-1)*sigma_mx(i,j)*dt/mu0))/sigma_mx(i,j); u3vmC:bV  
                dby(i,j)=(1-exp((-1)*sigma_my(i,j)*dt/mu0))/sigma_my(i,j); !)O$Q}'\  
            elseif i<=npml&&j>=ny-npml+1 qedGBl&  
                di=npml-i; f[b YjIX  
                dj=npml+j-ny-1; {n]sRz  
                sigma_x(i,j)=sigma_max*(di/npml)^n; Wv"tAseu  
                sigma_mx(i,j)=sigma_max*(di/npml)^n*mu0/epsilon0; "|%9
xGX|D  
                sigma_y(i,j)=sigma_max*(dj/npml)^n; GcR`{ 3hO  
                sigma_my(i,j)=sigma_max*(dj/npml)^n*mu0/epsilon0; $J6.a!5IE  
                cax(i,j)=exp((-1)*sigma_x(i,j)*dt/epsilon0); ??Zmj:8E'  
                cay(i,j)=exp((-1)*sigma_y(i,j)*dt/epsilon0); PAHlj,n)  
                cbx(i,j)=(1-exp((-1)*sigma_x(i,j)*dt/epsilon0))/sigma_x(i,j); D.(G9H  
                cby(i,j)=(1-exp((-1)*sigma_y(i,j)*dt/epsilon0))/sigma_y(i,j); Gq*)]X{Ua  
                dax(i,j)=exp((-1)*sigma_mx(i,j)*dt/mu0); ~t={ \,X\  
                day(i,j)=exp((-1)*sigma_my(i,j)*dt/mu0); &r%*_pX  
                dbx(i,j)=(1-exp((-1)*sigma_mx(i,j)*dt/mu0))/sigma_mx(i,j); 7g)3\C   
                dby(i,j)=(1-exp((-1)*sigma_my(i,j)*dt/mu0))/sigma_my(i,j); iIE(zw)H  
            elseif i>=nx-npml+1&&j<=npml prtxE&-  
                di=npml+i-nx-1; %7msAvbk  
                dj=npml-j; |xVCl<{F%  
                sigma_x(i,j)=sigma_max*(di/npml)^n; `a>vPW  
                sigma_mx(i,j)=sigma_max*(di/npml)^n*mu0/epsilon0; Ug21d42Z4  
                sigma_y(i,j)=sigma_max*(dj/npml)^n; ZRB 0OH  
                sigma_my(i,j)=sigma_max*(dj/npml)^n*mu0/epsilon0; `l2q G#  
                cax(i,j)=exp((-1)*sigma_x(i,j)*dt/epsilon0); ]ufW61W6Ci  
                cay(i,j)=exp((-1)*sigma_y(i,j)*dt/epsilon0); ]%|WE  
                cbx(i,j)=(1-exp((-1)*sigma_x(i,j)*dt/epsilon0))/sigma_x(i,j); !dY:S';~  
                cby(i,j)=(1-exp((-1)*sigma_y(i,j)*dt/epsilon0))/sigma_y(i,j); |lxy< C4V  
                dax(i,j)=exp((-1)*sigma_mx(i,j)*dt/mu0); |8 bO5l:  
                day(i,j)=exp((-1)*sigma_my(i,j)*dt/mu0); sg{D
?zl  
                dbx(i,j)=(1-exp((-1)*sigma_mx(i,j)*dt/mu0))/sigma_mx(i,j); iwQ-(GjM[A  
                dby(i,j)=(1-exp((-1)*sigma_my(i,j)*dt/mu0))/sigma_my(i,j); d|]O<]CG_  
            elseif i>=nx-npml+1&&j>=ny-npml+1 H
c]1mM  
                di=npml+i-nx-1; .gGvyscdH;  
                dj=npml+j-ny-1; hy
iMOa  
                sigma_x(i,j)=sigma_max*(di/npml)^n; 1>w^ q`P  
                sigma_mx(i,j)=sigma_max*(di/npml)^n*mu0/epsilon0; 6#M0AG  
   &nb .. JtpY][}"~3  
S |>$0P4W(  

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