I've uploaded a few more videos of LRRD's "Emflume" in operation. The potential for amazing slow-motion sediment transport and fluid dynamics visualizations with this thing are endless.
gx8 1917-Emflume9-sed-trans from Matt Kuchta on Vimeo.
gx8 1917-Emflume6-sed-trans from Matt Kuchta on Vimeo.
gx8 1917-Emflume7-paddle from Matt Kuchta on Vimeo.
Flow over an obstruction in the LRRD "Emflume" from Matt Kuchta on Vimeo.
1000 fps, flow velocity ~1m/s
gx8 1917-Emflume10-paddle from Matt Kuchta on Vimeo.
gx8 1917-Emflume11-sedtranstest from Matt Kuchta on Vimeo.
Sediment transported through the Emflume, Note the fine strath (red) covered by a traction carpet. Saltating and supspended load also visible.
The only thing I would wish for in the design is a little more working room so that you can develop bedforms like climbing ripples, laminations, and antidunes, although I didn't get a lot of time to putz around with the flume itself, so it might already have these capabilities by adjusting some of the parameters more carefully.