Flow and pressure losses occur when a parallel flow exits into
stationary surroundings. The velocity of the exiting flow decreases depending on the distance and diameter of the outlet area. The velocity decreases with increasing distance from the middle jet. The findings from the velocity profiles are used for example in the construction of nozzles and turbomachines.
This experimental unit – used in the aerodynamics trainer FM1849-56 – allows the measurement of the velocity curve in the outlet jet. The total pressures are measured at defined distances from the outlet area in the vertical and horizontal direction by means of a movable Pitot tube.
Pressures read on the tube manometers in FM-1849-56 can be used to determine the velocity. The graphical representation of the velocity profile indicates a decrease in velocity with increasing distance of the measurement from the middle jet and the outlet area. Vortex formation at boundary layers leads to the reduction in velocity due to the loss of energy.
The experimental unit is attached to the FM-1849-56 trainer,
simply and precisely with quick release fasteners.
Experiments
- Recording the pressure curve at the outlet of a parallel flow into resting surroundings
- Representation of velocity profiles
Specification
- Determination of the pressure loss in the flow outlet into stationary surroundings
- Accessory for aerodynamics trainer FM-1849-56
- Pitot tube, can be moved horizontally and vertically
- 16 tube manometers of FM-1849-56 for displaying the pressures
