U = 1; % Uniform stream % GRID: x = -2:.02:2; y = -2:.02:2; for m = 1:length(x) for n = 1:length(y) xx(m,n) = x(m); yy(m,n) = y(n); % Velocity potential function: phi UniFlow(m,n) = U * x(m); % Stream function: psi UniFlow(m,n) = U * y(n); end end % Plots % Uniform stream in x direction: contour(xx,yy,psi UniFlow,[-2:.5:2],’k’),hold on contour(xx,yy,phi UniFlow,[-10:1:5],’r’) axis image,hold off title(’Uniform stream in x direction’) xlabel(’x’),ylabel(’y’)
MATLAB: Is it always showing an error as phi is an undefined function for input argument type char ?
contourplot
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