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Vortex Appartus
The Vortex Appartus (Product Code: SLE/EFM/27) is a rotating-vessel apparatus for producing a forced vortex in water and measuring the shape of its free surface. A low-voltage, variable-speed motor spins the vessel about its vertical axis, and a traverse probe with linear scales lets students map the surface profile point by point. Designed for fluid mechanics teaching in engineering colleges, polytechnics and technical training centres, it is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, an engineering lab equipment manufacturer serving institutions in India and abroad.
Key Details
| Parameter | Detail |
|---|---|
| Type | Forced vortex apparatus with rotating water vessel |
| Drive | Low-voltage, variable-speed motor rotating the vessel about its vertical axis |
| Speed control | Separate speed-control unit, sited away from the main apparatus |
| Surface measurement | Traverse probe movable horizontally and vertically, with a linear scale on each axis |
| Total head measurement | Traverse probe can be replaced by a Pitot tube to measure the distribution of total head |
| Water fill | Vessel filled to about half full while rotating |
Typical Use
Students start the vessel turning, add water until it is roughly half full and watch a forced vortex develop: the water surface falls steeply towards the centre and can open up an air core. After a few minutes of steady rotation the vortex settles into a constant shape, and only then do students take readings, stepping the traverse probe across the radius and recording the surface height against radial position from the two scales. Repeating the traverse at different motor speeds shows how the surface profile deepens as rotation increases, and the results can be compared with the parabolic profile predicted by forced-vortex theory.
For a second set of readings the traverse probe is swapped for a Pitot tube, so the class can plot how total head varies across the vessel. Keeping the speed-control unit away from the vessel lets the instructor adjust rotation without disturbing the water, which makes the apparatus practical for group demonstrations as well as individual lab reports. It suits institutions building engineering educational equipment into their hydraulics and fluid mechanics syllabus.
Manufacturer
ScienceLab is the brand name used by Jain Scientific Equipments Private Limited of Ambala, Haryana, which produces this vortex apparatus along with other fluid mechanics and structures teaching equipment. You can learn more about who we are on our company profile page.
Related Fluid Mechanics Equipment
Other items that complement vortex experiments in the same hydraulics lab:
- Bernoulli's Theorem — builds on the total-head idea with a Venturi tube and manometer panel
- Cavitation In Venturi — links pressure, velocity and flow in a visible demonstration
- Pressure Measurement Bench — grounds students in manometer and gauge readings before head measurements
- Stopwatch, Digital — for timing how long the vortex takes to settle before readings are taken
The complete Fluid Mechanics category lists our pumps, flumes and flow apparatus.
Frequently Asked Questions
How is the speed of the vessel controlled?
Through a separate speed-control unit placed away from the main apparatus, which drives the low-voltage, variable-speed motor.
How do students measure the vortex surface?
With the traverse probe, which moves both horizontally and vertically; each axis has a linear scale, so surface height can be recorded at known radial positions.
Is a Pitot tube supplied?
The apparatus is designed so a Pitot tube can replace the traverse probe for total-head measurements. Please contact us to confirm whether it is part of your supply.
What are the vessel size and motor supply voltage?
These values are not listed in our current product description. Ask us for the datasheet through the contact page.
How long before readings can be taken?
Allow a few minutes of steady rotation; once the vortex shape stops changing, the surface profile can be traversed.
What warranty and documentation come with it?
Warranty terms are confirmed on the quotation. If you need instruction material or a calibration certificate for any measuring part, raise it with us before ordering.
Can you supply this to overseas institutions?
Yes, we deliver to colleges and training centres in India and international markets; export packing and shipping details are agreed at the quotation stage.
Request a Quote
To get a price for this vortex apparatus, write to us via the contact form or place it in your enquiry cart with the quantity you need.
Last updated: 24 September 2026
