Free and Forced Vortex Apparatus Manufacturer,Supplier and Exporter in India
Product Code : EL-FML-10028
Jlab Export is a leading Free and Forced Vortex Apparatus Manufacturer,and suppliers in India
Free and Forced Vortex Apparatus (code EL-FML-10028) forms both kinds of vortex in a transparent acrylic cylinder about 200 mm in diameter. Four circumferential jets near the base set up a free vortex, and an FHP variable speed motor turning the cylinder about its vertical axis through a V belt produces a forced vortex; measuring the water surface profile then shows how the two differ. JLab manufactures this vortex study unit in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Cylinder | Transparent acrylic, about 200 mm dia. |
| Height of overflow point | 150 mm |
| Free vortex | Four circumferential jets near the bottom of the cylinder |
| Outlet | Orifice with reducing bush for a smaller diameter |
| Forced vortex drive | FHP variable speed motor with V belt |
| Experiment | Surface profile of free and forced vortex; total energy through the vortex |
| Quality check | Each vortex apparatus is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 1 unit |
| Dispatch time | Usually 14–18 working days |
| Product code | EL-FML-10028 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Two Vortex Types, Two Surface Shapes
In the free vortex no outside torque acts (the torque from the jets is taken as negligible), so the tangential velocity follows v r = constant: water near the centre spins fastest and the surface dips into a funnel around the outlet. The orifice takes a reducing bush, so the vortex can also be formed with a smaller outlet diameter. In the forced vortex the cylinder and water turn together like a solid body, v = ωr, and the free surface becomes a paraboloid, rising by ω²r²/2g above its lowest point.
Measuring the Profile and the Energy
Each run is allowed to reach a steady state, with the depth at any point no longer changing over time, before the surface coordinates are measured at a series of radii. The free surface marks the sum of pressure head and datum head at each radius. For the free vortex, adding the velocity head v²/2g to that level gives the same total head at every radius, showing that total energy is constant through this irrotational vortex. In the forced vortex the total head rises with radius, because the motor’s torque puts energy into the water.
Other Vortex and Energy Apparatus
- Forced Vortex Apparatus — a forced vortex unit whose graduated probe traverses the full diameter.
- Bernoullis Theorem Apparatus — total head along a streamline, the same energy sum used here.
This unit is one of the benches in Fluid Mechanics Lab, under Fluid Mechanics and Hydraulics Lab Equipment.
Request a Quote
Order through Add To Cart, or use the contact page for a quotation, letting us know the number of units and the delivery town.
Last updated: 30 October 2026
