Compressible Flow Unit
Product Code : EL-FMLE-10653
QUICK ANSWER: The Compressible Flow Unit is an advanced, versatile apparatus built around a variable-speed radial fan used to teach the concepts of compressible flow, drawing in air from the environment and accelerating it through a measuring nozzle at the intake before it passes through interchangeable, transparent measuring objects further down the measuring section. Drawing the air in on the intake side of the fan, together with the optimum arrangement of the measuring objects, minimizes turbulence, while the transparent measuring objects, fitted with connectors for pressure measurement, provide clear insight into the internal flow structure for subsonic and transonic air flow. A throttle valve is used to record the fan characteristic curve, and digital displays show pressures, velocity and speed.
An Advanced versatile apparatus, based around a variable-speed air compressor, is designed to teach the concepts of compressible flow; the basic unit contains everything required to demonstrate the fundamental principles. A radial fan with infinitely variable speed control draws in air from the environment, and at the intake the airflow is accelerated in a measuring nozzle.
Further down the measuring section, the air flows through interchangeable measuring objects. Drawing in the air and the arrangement of the measuring objects on the intake side of the fan minimizes turbulence when flowing into the measuring objects, and all measuring objects are made of transparent material, showing the inner structure.
| FEATURES | |
|---|---|
| Investigate flow of compressible fluids | |
| Subsonic and transonic air flow | |
| Variable speed on the radial fan for adjusting the mass flow rate | |
| Pressure losses in subsonic flow in pipe elbows and various pipe sections | |
| Pressure curve at subsonic and transonic nozzle flow | |
| Minimized turbulence by drawing in air and optimum arrangement of the measuring objects | |
| Transparent measuring objects with connectors for pressure measurement provide insight into the internal structure | |
| Measuring nozzle for determining the mass flow rate | |
| Orifice for determining volumetric flow rate by differential pressure measurement | |
| Record fan characteristic curve using a throttle valve | |
| Digital displays for pressures, velocity and speed | |
| SPECIFICATION | |
| Radial fan | |
| Max. Speed | 31000min-1 |
| Max. Volumetric flow rate | 226m3/h |
| Max. Head | 318mbar |
| Max. Power consumption | 1,8kW |
| Measuring objects | |
| Pipe section | 1m |
| Ø 16, 24, 34mm | |
| 90° pipe elbow | |
| 2 nozzles, inner diameter | 12…34mm |
| With sudden enlargement | |
| With gradual enlargement (de Laval nozzle) | |
| Orifice with orifice disks | Ø 12, 19, 25, 32mm |
| Throttle valve | Ø 34mm |
| Measuring ranges | |
| Speed | 0…99999min-1 |
| Pressure | |
| 1x 0…25mbar | |
| 1x 0…600mbar | |
| 1x 0…1000mbar | |
| Velocity | 0…65m/s |
| 230V, 50Hz, 1 phase | |
| DIMENSIONS AND WEIGHT | |
| L x W x H | 900 x 650 x 800 mm |
| Weight | 120kg |
For this and other fluid mechanics lab equipment, schools and colleges can contact Engineering Lab Equipment, a manufacturer, supplier and exporter based in Ambala, India.
Last Updated: September 2026
Related Products: Subsonic Wind Tunnel, Orifice and Venturi Meter Demonstration, Particle Drag Coefficients, Pitot Tube Apparatus
