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Boundary Layers Fluid Mechanics Experiment Equipment
Description & Specification
Boundary Layers Fluid Mechanics Experiment Equipment
Categories:
Fluid Mechanics Teaching Equipment
Technical Specifications
The experimental unit – used in the aerodynamics trainer – allows the boundary layer on a flat plate to be studied. For this purpose, air flows along the plate, parallel to the surface. The plate has two different surfaces so as to study the effect of surface conditions on the boundary layer. Side bodies can be used in the measuring section. Thus the boundary layer phenomena can experience interference with a degressive or progressive pressure curve and, for example equalise the friction loss of the flow.
The experimental unit is attached to the trainer, simply and precisely with quick release fasteners.
During incident flow of bodies fluids such as air “stick” to the surface of the body and form the so-called boundary layer. The kind of flow within the boundary layer – laminar or turbulent – significantly affects the drag. A horizontally movable Pitot tube, adjusted using a micrometer screw, measures the total pressures at various distances from the plate surface. The plate can be moved vertically to enable the recording of total pressures in the direction of flow. The velocity can be determined from the pressures read off the tube manometers. The findings from studying the boundary layer are taken into consideration when designing aero planes, vessels and turbomachines.
Specification:
Investigation of boundary layers on a flat plate with flow along the plate
Pitot tube for measuring the total pressure at the plate
Adjustment of the pitot tube to the plate using micrometer screw
Accessories for the aerodynamics trainer
Moveable plate, along the direction of flow
Removable side bodies for interference of the boundary layer with degressive or progressive pressure profile
16 tube manometers for displaying the dynamic pressures
Plate with two different rough surfaces.
Technical data:
Pitot tube
Diameter: 0,7mm
Plate, movable: 0…250mm
Movable: 0,35…50mm
Lxw: 260x55mm, thickness: 5mm
Chamfer: 30°
2 side bodies, removable
Inclination: 1:12,5
Smooth surface: 25µm
Rough surface: 400µm.
