A "WEIR" is a structure built over a river or stream, often made of concrete or masonry, designed to raise the water level on the upstream side and allow the excess water to flow over its entire length to the downstream side. Weirs are commonly used to measure the rate of water flow in rivers and streams. Some of the most common types of weirs are sharp-crested, broad-crested, and ogee-shaped. In this setup, a centrifugal pump pulls water from the sump tank and pumps it into a narrow flow channel where the weir is installed at the end. The different types of weirs can be used interchangeably. The water that flows over the weir is collected and can either be directed to the sump or a measuring tank for flow measurement.

Experimental objective

Determine the discharge coefficient for both types of notches.

Specifications

·        Weirs Included: Sharp-crested weir, broad-crested weir, and ogee-shaped weir.

·        Pump: ½ HP Monoblock pump.

·        Flow Measurement: Measuring tank and calibrated water flow meter.

·        Documentation: Supplied with a technical manual.

Utilities required other than above supply

Floor space: 2.5 m × 1.5 m

Power supply: 230 V, 5 A with proper earthing