Bernoulli's Theorem Demonstration (MODEL ME-FM-1274E-R)

The ARL’s 1274E accessory demonstrates the application of Bernoulli’s Theorem and circumstances where it does not apply.

  • Venturi section machined from clear acrylic
  • Seven static pressure tappings plus a total head measurement
  • Flow control valve
  • Manometer board with eight tubes
  • Quick-release fitting for easy connection to Hydraulics Bench
  • Educational software available as an option

The test section consists of a classical Venturi machined in clear acrylic. A series of wall tappings enable measurement of the static pressure distribution along the converging and diverging duct. A total head tube is provided to traverse along the centre line of the test section. These tappings are connected to a manometer bank incorporating a manifold with an air bleed valve.

Pressurisation of the manometers is facilitated by a hand pump. The test section is arranged so that the characteristics of flow through both a converging and diverging section can be studied. Water is fed through a hose connector and is controlled by a flow regulator valve at the outlet of the test section.

The Venturi can be demonstrated as a means of flow measurement and the discharge coefficient can be determined.

Manometer range:0-300mm
Number of manometer tubes:8
Throat diameter:10.0mm
Upstream diameter:25.0mm
Upstream taper:14°
Downstream taper:21°
  • Demonstrating Bernoulli’s Theorem and its limitations
  • Directly measuring the static and total head distribution along a Venturi tube
  • Determining the meter coefficient at various flow rates

Hydraulics Bench

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