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16 lines
585 B
16 lines
585 B
resolution=10;nGrid=2;
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h=1.0/(resolution*nGrid);
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X = h/2:h:1-h/2;
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[x,y,z]=meshgrid(X);
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k=1e2;
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a=1.0;b=1.0;c = 0.0;
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tmp = (c + cos(2*pi.*x) + a.*cos(2*pi.*y) + b.*cos(2*pi.*z));
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tmp2 = exp(k.*tmp);
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dHda = -(k.*tmp2.*cos(2*pi.*y))./(tmp2+ 1).^2;
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dHdb = -(k.*tmp2.*cos(2*pi.*z))./(tmp2+ 1).^2;
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dHdc = -(k.*tmp2)./(tmp2+ 1).^2;
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disp( ' | dHda | dHdb | dHdc |')
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disp(['max |',num2str(max(dHda,[],'all')),'|',num2str(max(dHdb,[],'all')),'|',num2str(max(dHdc,[],'all')),])
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disp(['min |',num2str(min(dHda,[],'all')),'|',num2str(min(dHdb,[],'all')),'|',num2str(min(dHdc,[],'all')),])
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