Reynolds Apparatus Manufacturer,Supplier and Exporter
Product Code : SEL-FMM-11050
Quick Answer: Coloured dye fed through a jet into water flowing along a 25 mm diameter, 1 m long acrylic tube lets students see different flow conditions on the Reynolds Apparatus and obtain the Reynolds number for each.
Last updated: October 2026
Key Features
- Acrylic (Perspex) tube, 25 mm diameter and 1 m long, for viewing flow conditions
- Elliptical bell mouth entry for smooth flow into the tube
- Storage cum supply tank with provision for coloured dye through a jet
- Regulating valve on the downstream side of the tube
- Transparent piezometer tubes with scale to measure head
- 1 litre plastic flask to measure discharge
Technical Specifications
| Specification | Value |
|---|---|
| Test tube | Acrylic, 25 mm dia., 1 m long |
| Entry | Elliptical bell mouth |
| Dye supply | Coloured dye through a jet from the storage cum supply tank |
| Discharge measurement | 1 litre plastic flask |
| Sump tank | 900 x 350 x 350 mm |
About This Product
Flow conditions in a pipe change as the velocity rises, and the dye makes those conditions visible inside the transparent tube. Students measure the actual discharge for each setting and use it to calculate the Reynolds number, linking what they see to a single dimensionless value. The discharge has to be raised very gradually from a smaller to a larger value with the downstream regulating valve.
Frequently Asked Questions
How should the discharge be changed during the test?
Very gradually, from a smaller to a larger value, using the regulating valve on the downstream side of the tube. The actual discharge is measured with the 1 litre plastic flask.
What size is the test tube?
The acrylic tube is 25 mm in diameter and 1 m long, with an elliptical bell mouth at the entry for smooth flow.
Related: Fluid Mechanics Models, Losses In Pipe Friction Apparatus, Verification of Bernoullis Theorem, Metacentric Height Apparatus.
For a quotation on the Reynolds Apparatus, contact School Educational Instrument.
