I can use poisson's equation to get streamline contours from comsol, but cannot get arrowheads for the streamlines. When i use the streamline feature of comsol, the streamlines are not smooth. I am trying to visualize using tecplot but i am unable to find how to have arrowheads along the streamline.
You need velocity vectors to do this with Tecplot. You create these by selecting slicing planes through the flow or some spacing along the streamlines to arrive at locations for the vectors. You can use the same (constant) velocity for each vector. The components are obtained so that the vectors are tangent to the streamlines at the desired locations. Treat this process as a specific type of post-processing and make the code general so that you can use it over-and-over again. Or if you have the information inside the model, just write it out separately.
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