This is just a R&D of 2D Vector Field" or "Flow Map from an actual Fluid dynamic simulations created inside Houdini.
I wanted to be able to export the velocity fields as a sequence from a Fluid Simulation. Houdini makes it so easy for you. Its all done in the "Material Shader Buildier." . Thanks to Scott K over at Sidefx for his tips and suggestions and tutorials. Whenever I need a sequence or just one image, it can be done inside Houdini.
More coming soon.