Material panning from the middle and going out

How can I pan the texture in such way? Blue Shockwave VFX effect black screen - YouTube
I mostly mean just the movement of this effect, that the textures goes from the middle and out.

Typically the way this is usually done is by making a disc out of quads so that it can be unwrapped as a grid, then you can use a regular directional panner on it.

Here’s a better (more practical) example courtesy of Mark from the RealtimeVFX forums.

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