The weight of fluids at rest causes a pressure that is known as hydrostatic pressure or gravitational pressure. This pressure acts on any area that is in communication with the fluid, exerting a force that is proportional to the size of the area.
The effect of hydrostatic pressure is highly important in many fields of engineering: in shipbuilding, in hydraulic engineering when designing locks and weirs, in sanitation and building services.
The experimental unit offers typical experiments to study hydrostatic pressure in liquids at rest. The effect of the hydrostatic pressure of water can be clearly shown at different water levels and angles of inclination.
The experimental unit consists of a transparent, tilting water tank with a scale for measuring volumes. Another scale is used to adjust the angle of inclination of the water tank. Th device is balanced by a lever arm using different weights and the compressive force measured.
The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.
Learning Objectives / Experiments
Free overfall at the sharp-crested weir
Plate weirs as measuring weirs
Determining the discharge coefficient
Comparison of measuring weirs (Rehbock, Thomson)
Determining the discharge
Comparison of theoretical and measured discharge
Specification:
Discharge measurement in open channels using 2 measuring weirs
Measuring weirs for installation in the base module experimental flume
Thomson weir with V-profile
Rehbock weir with rectangular profile
Level gauge with scale for determining the head
Level gauge can be positioned anywhere along the experimental flume
Technical Data:
Weirs
Material: PVC
Self-sealing
Rectangular profile, LxW of the section: 60mm
V-profile: angle of the section 90°, height of the