[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 4o( Q+6m  
    for j=1:ny vz)zl2F5sY  
            if i>=npml+1&&i<=nx-npml&&j>=npml+1&&j<=ny-npml qvRs1yr?q  
                di=0; B)Dsen  
                dj=0; \~""<*Hz  
                sigma_x(i,j)=0; szy2"~hm  
                sigma_mx(i,j)=0; g=S|lVQm  
                sigma_y(i,j)=0; _(KzjOMt  
                sigma_my(i,j)=0; =#vU$~a  
            elseif i>=npml+1&&i<=nx-npml&&j<=npml qkq^oHI  
                di=0; 4aG}ex-s|  
                dj=npml-j; SdJkno  
                sigma_x(i,j)=0; ,h.hgyt  
                sigma_mx(i,j)=0; zHvW@A'F  
                sigma_y(i,j)=sigma_max*(dj/npml)^n; Qy) -gax:,  
                sigma_my(i,j)=sigma_max*(dj/npml)^n*mu0/epsilon0; D*)"?LG  
                cax(i,j)=exp((-1)*sigma_x(i,j)*dt/epsilon0); wPpern05  
                cay(i,j)=exp((-1)*sigma_y(i,j)*dt/epsilon0); zB+zw\ncN  
                cbx(i,j)=0; [<#`@Kr  
                cby(i,j)=(1-exp((-1)*sigma_y(i,j)*dt/epsilon0))/sigma_y(i,j); hj3wxH.}  
                dax(i,j)=exp((-1)*sigma_mx(i,j)*dt/mu0); QH6_nZY  
                day(i,j)=exp((-1)*sigma_my(i,j)*dt/mu0); #M:Vwn JX  
                dbx(i,j)=0; 8*(|uX  
                dby(i,j)=(1-exp((-1)*sigma_my(i,j)*dt/mu0))/sigma_my(i,j); 0JLQ.%_  
            elseif i>=npml+1&&i<=nx-npml&&j>=ny-npml+1 (vbI4&r  
                di=0; r5uX?^mJ0  
                dj=npml+j-ny-1; Gk<6+.c~  
                sigma_x(i,j)=0; _;G|3>5u  
                sigma_mx(i,j)=0; #vT~D>zj  
                sigma_y(i,j)=sigma_max*(dj/npml)^n; a.SxMF  
                sigma_my(i,j)=sigma_max*(dj/npml)^n*mu0/epsilon0; 3n1 >+8  
                cax(i,j)=exp((-1)*sigma_x(i,j)*dt/epsilon0); R%;dt<Dh
 
                cay(i,j)=exp((-1)*sigma_y(i,j)*dt/epsilon0); Njs'v;-K  
                cbx(i,j)=0; v$R7"  
                cby(i,j)=(1-exp((-1)*sigma_y(i,j)*dt/epsilon0))/sigma_y(i,j); |f+fG=a67V  
                dax(i,j)=exp((-1)*sigma_mx(i,j)*dt/mu0); Z]^O=kX7k  
                day(i,j)=exp((-1)*sigma_my(i,j)*dt/mu0);
f_> lz  
                dbx(i,j)=0; D(M^%z2N  
                dby(i,j)=(1-exp((-1)*sigma_my(i,j)*dt/mu0))/sigma_my(i,j); YHo*IX')C?  
            elseif i<=npml&&j>=npml+1&&j<=ny-npml `w%Qs)2  
                di=npml-i; HO39>:c  
                dj=0; 4J2C#Cs  
                sigma_x(i,j)=sigma_max*(di/npml)^n; IPlkv{^  
                sigma_mx(i,j)=sigma_max*(di/npml)^n*mu0/epsilon0; g<MCvC@  
                sigma_y(i,j)=0; *g 2N&U  
                sigma_my(i,j)=0; N
KRH>2,  
                cax(i,j)=exp((-1)*sigma_x(i,j)*dt/epsilon0); Qx77%L4  
                cay(i,j)=exp((-1)*sigma_y(i,j)*dt/epsilon0); rd}|^&e!Dy  
                cbx(i,j)=(1-exp((-1)*sigma_x(i,j)*dt/epsilon0))/sigma_x(i,j); Bet?]4\_
 
                cby(i,j)=0; hu-6V="^9  
                dax(i,j)=exp((-1)*sigma_mx(i,j)*dt/mu0); }zHG]k,j  
                day(i,j)=exp((-1)*sigma_my(i,j)*dt/mu0); FJ O-p  
                dbx(i,j)=(1-exp((-1)*sigma_mx(i,j)*dt/mu0))/sigma_mx(i,j); =2, iNn  
                dby(i,j)=0; S{qsq\X  
            elseif i>=nx-npml+1&&j>=npml+1&&j<=ny-npml ef -PlGn  
                di=npml+i-nx-1; <VmEXJIk  
                dj=0; 6?3\P>`3Y  
                sigma_x(i,j)=sigma_max*(di/npml)^n; h7
>`:~  
                sigma_mx(i,j)=sigma_max*(di/npml)^n*mu0/epsilon0; fMRMQR=6B  
                sigma_y(i,j)=0; nnMRp7LQ-  
                sigma_my(i,j)=0; o1u?H4z  
                cax(i,j)=exp((-1)*sigma_x(i,j)*dt/epsilon0); ~a.ei^r  
                cay(i,j)=exp((-1)*sigma_y(i,j)*dt/epsilon0); f.Ms3))  
                cbx(i,j)=(1-exp((-1)*sigma_x(i,j)*dt/epsilon0))/sigma_x(i,j); &y:SK
)  
                cby(i,j)=0; bH_zWk  
                dax(i,j)=exp((-1)*sigma_mx(i,j)*dt/mu0); Q E*`#r#e  
                day(i,j)=exp((-1)*sigma_my(i,j)*dt/mu0); h,P#
)^"  
                dbx(i,j)=(1-exp((-1)*sigma_mx(i,j)*dt/mu0))/sigma_mx(i,j); n7'X.=o7  
                dby(i,j)=0; 'E#Bz"
T  
            elseif i<=npml&&j<=npml 7By&cdl  
                di=npml-i; Z~DR,:  
                dj=npml-j; o$,e#q)8  
                sigma_x(i,j)=sigma_max*(di/npml)^n; >66v+  
                sigma_mx(i,j)=sigma_max*(di/npml)^n*mu0/epsilon0; Np R&`]  
                sigma_y(i,j)=sigma_max*(dj/npml)^n; =7<g;u  
                sigma_my(i,j)=sigma_max*(dj/npml)^n*mu0/epsilon0; jftf]n&Z(q  
                cax(i,j)=exp((-1)*sigma_x(i,j)*dt/epsilon0); t x#(K#/  
                cay(i,j)=exp((-1)*sigma_y(i,j)*dt/epsilon0); %
ZJ;>a#  
                cbx(i,j)=(1-exp((-1)*sigma_x(i,j)*dt/epsilon0))/sigma_x(i,j); x=VLRh%Gvl  
                cby(i,j)=(1-exp((-1)*sigma_y(i,j)*dt/epsilon0))/sigma_y(i,j); lNqF@eCT9  
                dax(i,j)=exp((-1)*sigma_mx(i,j)*dt/mu0); T3^(I~03  
                day(i,j)=exp((-1)*sigma_my(i,j)*dt/mu0); RL1cx|  
                dbx(i,j)=(1-exp((-1)*sigma_mx(i,j)*dt/mu0))/sigma_mx(i,j); R(DlJ  
                dby(i,j)=(1-exp((-1)*sigma_my(i,j)*dt/mu0))/sigma_my(i,j); Xh"8uJD  
            elseif i<=npml&&j>=ny-npml+1 $jv/00:&  
                di=npml-i; EB[B0e7}  
                dj=npml+j-ny-1; k54Vh=p  
                sigma_x(i,j)=sigma_max*(di/npml)^n; J, vEZT<Mt  
                sigma_mx(i,j)=sigma_max*(di/npml)^n*mu0/epsilon0; zgA/B{DaC;  
                sigma_y(i,j)=sigma_max*(dj/npml)^n; N(L?F):fT  
                sigma_my(i,j)=sigma_max*(dj/npml)^n*mu0/epsilon0; 9Zpd=m8dU  
                cax(i,j)=exp((-1)*sigma_x(i,j)*dt/epsilon0); 2k"!o~s^  
                cay(i,j)=exp((-1)*sigma_y(i,j)*dt/epsilon0); *W=R:Bl!  
                cbx(i,j)=(1-exp((-1)*sigma_x(i,j)*dt/epsilon0))/sigma_x(i,j); ?-9It|R  
                cby(i,j)=(1-exp((-1)*sigma_y(i,j)*dt/epsilon0))/sigma_y(i,j); (T2\   
                dax(i,j)=exp((-1)*sigma_mx(i,j)*dt/mu0); R]Pv=fn  
                day(i,j)=exp((-1)*sigma_my(i,j)*dt/mu0); g;G.uF&  
                dbx(i,j)=(1-exp((-1)*sigma_mx(i,j)*dt/mu0))/sigma_mx(i,j); UU]a).rz  
                dby(i,j)=(1-exp((-1)*sigma_my(i,j)*dt/mu0))/sigma_my(i,j); w:o,mzuXK  
            elseif i>=nx-npml+1&&j<=npml %jmL#IN)  
                di=npml+i-nx-1; Y%)@)$sK  
                dj=npml-j; (Zv/(SE5%  
                sigma_x(i,j)=sigma_max*(di/npml)^n; l*<RKY8  
                sigma_mx(i,j)=sigma_max*(di/npml)^n*mu0/epsilon0; ;TG<$4N  
                sigma_y(i,j)=sigma_max*(dj/npml)^n;  .'^Pg  
                sigma_my(i,j)=sigma_max*(dj/npml)^n*mu0/epsilon0; :LBRyBV  
                cax(i,j)=exp((-1)*sigma_x(i,j)*dt/epsilon0); :<>=,`vQD  
                cay(i,j)=exp((-1)*sigma_y(i,j)*dt/epsilon0); H6]z98  
                cbx(i,j)=(1-exp((-1)*sigma_x(i,j)*dt/epsilon0))/sigma_x(i,j); nn6&`$(Q~  
                cby(i,j)=(1-exp((-1)*sigma_y(i,j)*dt/epsilon0))/sigma_y(i,j); ':
_1z5  
                dax(i,j)=exp((-1)*sigma_mx(i,j)*dt/mu0); hha^:,  
                day(i,j)=exp((-1)*sigma_my(i,j)*dt/mu0); RS[>7-9  
                dbx(i,j)=(1-exp((-1)*sigma_mx(i,j)*dt/mu0))/sigma_mx(i,j); 5$L=l  
                dby(i,j)=(1-exp((-1)*sigma_my(i,j)*dt/mu0))/sigma_my(i,j); ".T&nS[z  
            elseif i>=nx-npml+1&&j>=ny-npml+1 8iwqy0<  
                di=npml+i-nx-1; o<8=@ ^T  
                dj=npml+j-ny-1; KcNh3CR  
                sigma_x(i,j)=sigma_max*(di/npml)^n; @F0+t;  
                sigma_mx(i,j)=sigma_max*(di/npml)^n*mu0/epsilon0; Y+UM>  
   &nb .. 8!u8ZvbFG  
eU.HS78  

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