The annular flume is modeled after one at Delft University of Technology in the Netherlands. Annular flumes are ideal for long-term, replicated experiments on the effects of flow on biological and chemical processes, ecosystem processes, and sediment transport or distribution studies.
The flow is driven by rotation of a titanium and PVC top plate and the simultaneous counter-rotation of the main flume channel. Flow speeds of 0 - 25 cm sec-1 (mid-water depth) can be achieved. Flow direction can be reversed (e.g., mimicking tidal flows).
The annular flume has an outside diameter of 399 cm and a cross-channel width of 30 cm with maximum water depth is 40 cm. The volume with a 20-cm water depth is 362 L. The flume is constructed of seawater-resistant materials, PVC, optical quality glass, acrylic panels to facilitate access for sensors and sampling devices. A titanium plate mounted to the PVC top serves as a heat exchanger for temperature control between 10-20˚C.
Flow measurement via Particle-Image Velocimetry (PIV) may be possible. See Biological Physical Interactions Laboratory web page for more information. http://marine.rutgers.edu/~hfuchs/BPI_Lab/index.html
Recently, three other annular flumes were relocated from this facility to the Rutgers Aquaculture Innovation Center in North Cape May, NJ. http://aic.rutgers.edu/flume-room.html