In the initial “Pump performance curves ” post I had forgotten who I had learned it from. It turns out to have been John Cimbala and Laura Pauley from Penn State. They have kindly passed on the videos they showed at the 2007 APS-DFD meeting in Salt Lake City. The full videos are linked here, here, and here. GIFS are below. It is so simple but there is so much in it. This is one of my favorite labs we do now.
An index of all the demonstrations posted on this blog can be found here. Don’t forget to follow @nbkaye on twitter for updates to this blog. If you have a demonstration that you use in class that you would like to share on this blog please email me (firstname.lastname@example.org). I also welcome comments (through the comments section or via email) on improving the demonstrations.