Impact Of Jet On Vanes Apparatus
Product Code : EL-FML-11043
Quick answer: The impact of jet on vanes apparatus measures the force a water jet exerts on a flat plate and a hemispherical cup and compares it with momentum theory. A vertical jet from a brass nozzle strikes the vane inside a glass-sided chamber, and weights on a pan balance the force. Lab Exports manufactures it in Delhi for engineering colleges, polytechnics and TVET institutes.
Specifications
| Component | Specification |
|---|---|
| Target vanes | 2 nos., brass: flat plate and hemispherical cup |
| Nozzle | Brass |
| Chamber | Stainless steel, glass on opposite sides |
| Force measurement | Weight pan on the vane stem, level gauge for balance |
| Counterbalance | Compression spring for the dead weight of moving parts |
| Pump | FHP pump, standard make |
| Flow measurement | Measuring tank with piezometer, 40 litre |
| Sump tank | 60 litre |
| Timing | Electronic stop watch |
| Utilities | Water supply and drain; 0.5 kW, 220 V AC single phase |
How the impact of jet experiment is done
By Newton's second law, the force on a vane equals the rate of change of momentum of the water striking it. For a jet with mass flow rho Q and velocity v, a flat plate normal to the jet turns the flow through 90 degrees, so F = rho Q v. A hemispherical cup turns the water back on itself, so in theory F = 2 rho Q v, twice the flat-plate value. Measuring both on the same jet shows how vane shape changes the force.
- Fit the flat plate on the stem and set the level gauge with the pump off.
- Start the pump and set a steady jet with the flow valve.
- Add weights to the pan until the vane returns to the level mark.
- Time the rise in the measuring tank to find the flow rate and jet velocity.
- Repeat at several flows, then change to the hemispherical cup and repeat.
Plotting measured force against rho Q v gives straight lines with slopes close to 1 for the plate and approaching 2 for the cup; the shortfall shows the effect of friction and incomplete turning of the jet.
Key features
- Brass flat plate and hemispherical cup targets for comparing vane shapes
- Brass nozzle producing a vertical water jet
- Stainless steel chamber with glass on opposite sides for watching the jet strike
- Weight pan balance, with the dead weight of moving parts taken by a compression spring
- Self-contained recirculation from a 60 litre sump with an FHP pump
- 40 litre measuring tank with piezometer for the flow rate
Documentation and supply
Installation instructions and a manual are supplied with the apparatus. Most Lab Exports products carry a one-year manufacturer warranty.
Lab Exports manufactures the impact of jet apparatus at its works in Laxmi Nagar, Delhi, and supplies it to engineering colleges, polytechnics and TVET institutes in India and 60+ countries, handling the export documents for each shipment. More about the company is on the About Lab Exports page.
Related Fluid Mechanics Lab products
- Friction in Pipe Lines Apparatus (EL-FML-11042)
- Metacentric Height Apparatus (EL-FML-11044)
- Study of Pipe Fitting (EL-FML-11041)
- Pitot Static Tube Set-up (EL-FML-11045)
- Venturimeter Orificemeter Calibration Set Up (EL-FML-11040)
- Free Force Vortex Apparatus (EL-FML-11046)
The full range is in the Fluid Mechanics Lab section of the Engineering Lab range.
Frequently asked questions
Why is the force on a hemispherical cup larger than on a flat plate?
The cup reverses the direction of the water, so the change in momentum, and therefore the force, is up to twice that on a flat plate.
How is the jet force measured?
Weights are added to a pan on the vane stem until the vane is back at the level mark; the added weight balances the jet force.
What utilities does the apparatus need?
A water supply and drain, and a single-phase 220 V AC, 0.5 kW electricity supply.
What is the price of the impact of jet apparatus?
Prices are not published on the website. Add the impact of jet apparatus to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code EL-FML-11043 and the quantity, to receive a quotation.
Does Lab Exports manufacture the impact of jet apparatus?
Yes. Lab Exports manufactures the impact of jet apparatus at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code EL-FML-11043.
Request a quote
Email [email protected] with the house code EL-FML-11043 and the quantity, or add the impact of jet apparatus to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
