How to get cross product?
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Hi, I have problem in follolowing code,can any one help me to get cross product of E and B
clear all;
clc;
close all;
dim=64;
[kx,ky]=meshgrid(-1:2/(dim-1):1);
circ=sqrt(kx.^2+ky.^2)<1;
kx=kx/2;
ky=ky/2;
alp=asin(1);
k0=1/sin(alp);
k=256;
kz=sqrt(k0^2-(kx.^2+ky.^2));
Gx=sqrt(k0./kz).*((k0*ky.^2+kz.*kx.^2)./(k0*(kx.^2+ky.^2)));
Gy=sqrt(k0./kz).*((kz-k0).*kx.*ky)./(k0*(kx.^2+ky.^2));
Gz=sqrt(k0./kz).*(kx./k0);
l1=100;
z=-l1:1:l1;
c = numel(z);
mz=200/64;
n = size(kx);
Ex = zeros([k k c]);
Ey = zeros([k k c]);
Ez = zeros([k k c]);
q1 = exp(1i*kz*mz);
for jj=1:c
q2 = q1.^z(jj).*circ;
Ex(:,:,jj)=fftshift(fft2(q2.*Gx,k,k));
Ey(:,:,jj)=fftshift(fft2(q2.*Gy,k,k));
Ez(:,:,jj)=fftshift(fft2(q2.*Gz,k,k));
end
M1=Ex(k/2,:,:);
N1=squeeze(M1).';
E1=N1(l1+1,:);
M2=Ey(k/2,:,:);
N2=squeeze(M2).';
E2=N2(l1+1,:);
M3=Ez(k/2,:,:);
N3=squeeze(M3).';
E3=N3(l1+1,:);
c=3*10^8;
E=[E1 E2 E3];
B=E/c;
S=crossprodut(E,B);
thanks in advance
1 commentaire
Jan
le 4 Oct 2012
Please explain, what your code does and what it does not solve. Formatting the code properly would be a good idea also. It has been explained hundrets of times in this forum already, so I'm convinced you will find the reuquired information by your own.
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