Hydraulic flume

The Emflume1 is a turnkey desktop open channel flume for demonstrating fluid mechanics, river habitat hydraulics,
and sediment transport. Its portability makes it easy to use in a lab or classroom setting.

Emflume1 specifications

Working Section 55.8 cm x 9.4 cm x 15.2 cm (22 in x 3.7 in x 6 in);

Model footprint on table 1.02 m x 0.25 m (40 in x 10 in)

Portability Small and portable, fits on a desktop, 65 lb (29 kg) dry weight.
Water 23 L (6 gal)
Media Amount 6.8 kg (15 lb)
Media Type Color-coded
Other Features Efficient and quiet ducted-propeller.
System Also Includes Electronic flow controller for variable flow rates. Tilt system allows +/- 2.5 degrees of vertical tilt. Closed-cell foam hydraulic shapes, pitot tube. User and laboratory manual.
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The Emflume1 has applications in hydraulics and hydrology. Demonstrations of open channel flow include normal and critical depth determination, rating curve, specific energy, hydraulic jump, and sluice gate pressure distribution. Discharge can be measured when various weirs are used in the channel, such as suppressed rectangular, contracted rectangular, triangular, broad crested, and ogee crested. Pipe flow experiments can be conducted using Reynolds number. And shear stress and bed formations can be studied using our plastic modeling media.

See the Applications for Science and Teaching pages for more examples of how to use the Emflume1.


The Emflume1 has been a great addition to our Earth and Atmospheric Sciences department's teaching. It offers an easy-to-use interface for students to study fluid mechanics and is great for showing dynamics of sediment transport. When combined with our Em2 model's table-top view, these models allow me to show students how sediment transport dynamics affect our environment so that they will be prepared to make informed decisions about river, floodplain, and coastal management as they go forward in their careers.

Douglas Edmonds

Associate Professor, Indiana University

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