I'll play in my spring branch and big creek someday
but in my case my big interest is air intake tracks in
old motorcycle head and combustion chamber turbulence
at pressures the gas is more viscous than water.
In somewhat related fluid flow vien, are foil bearings that
float on air I'm hoping to adapt to crankshaft use.
On the stream flow restrictions I've seen some neat
things like rocks being thrown out of cascades onto
far bank several yards higher than water level. Also seen
series of alternation rotation bowls craved in otherwise
flat rock water 'slides'. Don't know what to make of it
all myself so just offering up stuff that may connect
with someone.
hobot