Herein lies a lot of the difficulty in doing experimental fluid mechanics. My own PhD ended up conprising a few minutes worth of data after years testing and re

Herein lies a lot of the difficulty in doing experimental fluid mechanics. My own PhD ended up conprising a few minutes worth of data after years testing and retesting. That said, I wonder if such an experiment would be better with PIV or even Schlieren as there would be no need to refill the tank each time.