How can I get curvature of stream2?

Asked by uchida yuki on 9 Oct 2019

Latest activity Answered by Yoshio on 11 Oct 2019

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Hi,MATLAB experts.

I want to get curvature of line drawn by stream2.

u and v are the velocity vectors in the x and y directions at 12,500 coordinates

I want to know the curvature of the streamline drawn by U and V at each coordinate.

[startx,starty]= meshgrid(-0.5:0.25:0.5,-0.25:0.01:0.25);

[m, n]=size(startx);

startx = reshape(startx,[1,m*n]);

starty = reshape(starty,[1,m*n]);

option= [0.1 50000];

streamline(X,Y,U,V,startx,starty, option)

hold on

streamline(X,Y,-U,-V,startx,starty, option)

plot(startx,starty,'Linestyle','none','Marker','.')

t=pi/100*(0:200);

hold off

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Answer by Yoshio on 11 Oct 2019

Seems your question is how to curculate curvature with (x,y) and (xdot, ydot), isn't it?

If so, you can find the many Q&A about curvature, not only for stream 2. It might be helpful for your question.

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