FLUID MECHANICS Page 1 of 2
H13
Vortex Apparatus
Makes clearly visible vortices and demonstrates vortex behaviour
Both Both free free and for forced ced vort vortice icess possib possible le • Vortices ortices are are clearly clearly visible visible from from all angles angles • Rapid Rapid conve conversi rsion on from from free free to forced forced vorte vortex x • Quantitat Quantitative ive analysis analysis of vortices vortices obtainable obtainable • Ideal for for classroom classroom demons demonstrati trations ons as well well as laborato laboratory ry experiments experiments • Compact Compact and and easily easily installed installed in the the laborat laboratory ory • Mini Minima mall water water supp supply ly need needed ed
TecQuipment Ltd, Bonsall Street, Long Eaton, Nottingham NG10 2AN, UK • T +44 115 972 2611 • F +44 115 973 1520 • E
[email protected] • W www.tecquipment.com • An ISO 9001 certified company PE/db/1110
FLUID MECHANICS Page 2 of 2
H13
Vortex Apparatus
Description
Essential Ancillaries
The TecQuipment Vortex Apparatus enables students to produce both free and forced vortices, and measure the vortex water surface profile.
• Gravimetric Hydraulic Bench (H1)
The equipment consists of a transparent vessel on a support frame, which mounts on a TecQuipment hydraulic bench (Gravimetric or Volumetric Hydraulic Benches, H1 o r H1D, are available separately). If no hydraulic bench is available, an external water supply and drain are required.
or • Volumetric Hydraulic Bench (H1D) or • Suitable water supply and drain
Essential Services
A low-voltage, variable-speed motor rotates the vessel about its vertical axis. A speed-control unit (included), sited away from the main apparatus, controls the speed of rotation.
Electrical supply: Earthed a.c. single-phase electrical supply, 220/250 V, 50 Hz or 110/115V, 60 Hz
To produce a forced vortex, students add water to the rotating vessel until it is about half full. A forced vortex forms. After a few minutes the vortex becomes constant, and students can measure the surface profile using the traverse probe. The traverse probe can move both horizontally and vertically, and both axes have l inear scales. Students can also measure distribution of total head by replacing the traverse probe with a Pitot tube.
Operating Conditions
To produce a free vortex, students place a smaller, perforated transparent cylinder inside the main vessel. This forms an annulus into which a continuous water supply is directed. When the vessel rotates, water passes through the perforations and spirals slowly inwards to a small hole in the centre of the base of the vessel. The surface falls rapidly towards the centre and produces an air core. Students measure the surface profile using the traverse probe.
Standard Features
Operating environment: Laboratory environment Storage temperature range: –25ºC to +55ºC (when packed for transport) Operating temperature range: +5ºC to +40ºC
Specification Dimensions: Nett: 920 mm x 620 mm x 520 mm Packed: 0.3 m3 Weight: Packed 25 kg Transparent cylinder: Approximately 380 mm wide x 180 mm deep
• Two-year warranty
Perforated cylinder: Approximately 286 mm wide x 180 mm deep
• Made in accordance with the latest European Union directives
Motor: 12 V d.c.
Experiments
Speed control: TecQuipment Speed Control Unit (E67 included)
• Supplied with comprehensive user guide
• Determination of the surface profile of a forced vortex • Determination of the surface profile of a free vortex • Determination of the total head variation in a forced vortex • Comparison of results with theoretical predictions
Instrumentation: Traverse probe and Pitot tube with scales calibrated in millimeters Water supply (if no TecQuipment hydraulic bench is available): Up to 8 litres a minute
• TecQuipment Ltd, Bonsall Street, Long Eaton, Nottingham NG10 2AN, UK • T +44 115 972 2611 • F +44 115 973 1520 • E
[email protected] • W www.tecquipment.com • An ISO 9001 certified company
