MATLAB: Compute Streamlines in Parallel and Antiparallel Directions

stream2stream3streamlinesvolume data

I have a field vector on a 3D grid and I am using

XYZ = stream3(X,Y,Z,U,V,W,startx,starty,startz)

to calculate the streamlines. It works great when calculating the streamlines parallel to the flow. However, I need to find the streamlines upstream (antiparallel) and downstream of the seed points. Is there any way to do that?

Best Answer

Just reverse your velocity fields.

XYZ_reverse = stream3(X,Y,Z,-U,-V,-W,startx,starty,startz)

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MATLAB: Streamline plot not complete

Works ok for me

N = 15; 
xx = linspace(min(x(:)),max(x(:)),10);
yy = linspace(min(y(:)),max(y(:)),10);
[startx,starty] = meshgrid(xx,yy);
streamline(x,y,u,v,startx,starty)

MATLAB: How to plot streamlines continuously

Not entirely sure what you mean. Changing startx and starty values? In your code you set the starting values on the y-axis to 0.

starty = -2:0.2:2; %Streamlines
startx = -2.*ones(size(starty));

Best Answer

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MATLAB: Streamline plot not complete

MATLAB: How to plot streamlines continuously

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