Fluid mechanics is concerned with the physical behaviour of fluids. An important branch of fluid mechanics is the analysis of air flow in the incompressible range in order to be able to determine the pressure distribution and the velocity profile of a flow. In practice, the findings from these experiments are necessary when devising and designing turbomachines.
With its extensive range of accessories, the unit offers a variety of experiments in the field of steady, incompressible flow. The external Pitot tube is used to measure free jets; the inner Pitot tube allows investigation of the air flow within the pipe section. A low-loss inlet and the length of the pipe section realize an optimal formation of the air flow. The air flow can optionally be studied via a nozzle or orifice plate. An iris diaphragm allows the diameter of the air flow to be varied. Pipe friction losses on various pipe fittings can be investigated. Up to 20 pressure measuring points mean the pressure conditions along the measuring section can be determined. The pressures that are read off the tube manometer make it possible to determine the pressure distribution and flow velocity.
Learning Objectives And Experiments
- Experiments in the field of steady, incompressible flows by means of different measuring objects:
- Calculation of the flow rate and the flow velocity
- Recording the different velocity profiles in both the free jet and the pipe cross-section
- Representation of the pressure loss in the system characteristic
- Representation of the pressure loss at different pipe elements
Specification
- Experiments from the field of steady incompressible flow
- Horizontal measuring section
- Radial fan infinitely variable via frequency converter
- Pitot tube in the free jet, 3-dimensional adjustable
- Pitot tube within the pipe section, vertically adjustable at 3 positions, adjustable height
- Different measuring objects: orifice plate, nozzle, iris diaphragm, pipe fittings
- 16 tube manometers for displaying the pressures
Technical Specification
- External Pitot tube in the free jet, 3-dimensional adjustable
- horizontal: ±140mm
- vertical: -80…120mm
- inner Ø: 2mm
- Internal Pitot tube, sliding
- vertical: ±40mm
- inner Ø: 1,1mm
- 20 pressure measuring points
- Radial fan
- max. motor power: 550W
- max. flow rate: 22m3/min
- max. differential pressure: 0,73kPa
- 16 tube manometers
- resolution: 1-fold, 2-fold, 5-fold and 10-fold
- max. resolution: 1Pa
- Iris diaphragm: Ø 40…75mm
- Orifice plate/nozzle: Ø 50mm
- 3 pipe fittings
- 230V, 50Hz, 1 phase
- 230V, 60Hz, 1 phase
- 120V, 60Hz, 1 phase
