Okay since you are discussing water block design albeing for GPU, I have a question.

If flow is important, then why do so many blocks have squared off edges.

As where being curved and streamlined? Like long oval shapes.

Or have (can't think of term) but vertical fins that are longer yet allowing for flow..............like fins on fish/whales

thing, long, curved.....................someone get my meaing, having a brain freeze at the moment.