16 lines
No EOL
590 B
Matlab
16 lines
No EOL
590 B
Matlab
% calculation of the flux jumps according to the chosen mesh
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% nodes - corresponding to the mesh
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% u - approximation
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% flux_jumps - jump of the flux in each node of the mesh including the
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% paramter function lambda
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function flux_jumps = jumps_flux(nodes, u, lambda)
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n_nodes = length(nodes);
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flux_jumps = zeros(n_nodes,1);
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diff_u = u(2:end) - u(1:end-1);
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diff_x = nodes(2:end) - nodes(1:end-1);
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eps = 1e-8;
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for i = 2:n_nodes-1
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flux_jumps(i) = diff_u(i)/diff_x(i)*lambda(nodes(i)+eps) - diff_u(i-1)/diff_x(i-1)*lambda(nodes(i)-eps);
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end
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end |