F1-13-MKII / F1-13a Flow Over Weir
The Flow Over Weirs consists of five basic elements used in conjunction with the flow channel in the moulded benchtop of the Hydraulics Bench.
Description
The Flow Over Weirs accessory consists of five basic elements, used in conjunction with the flow channel, in the moulded bench top of the Hydraulics Bench. Two weir plates of different shapes are provided enabling familiarisation and comparison with theory.
A quick-release connector in the base of the channel is unscrewed and a delivery nozzle screwed in its place.
A stilling baffle locates into slots in the walls of the channel. The combination of the inlet nozzle and stilling baffle promote smooth flow conditions in the channel.
A Vernier hook and point gauge is mounted on an instrument carrier, which is located on the side channels of the moulded top. The carrier may be moved along the channels to the required measurement position.
The rectangular notch weir or V notch weir to be tested is clamped to the weir carrier in the channel by thumb nuts. The stainless steel weir plates incorporate captive studs to aid assembly.
F1-13a Advanced Weirs available: See Accessories
Technical Specifications
Overall dimensions of weir plate
Thickness: 0.002m
Width: 0.23m
Height: 0.16m
Dimensions of rectangular notch
Thickness: 0.002m
Width: 0.03m
Height: 0.082m
Angle of V notch weir: 90° inclusive
Hook & point gauge range: 0-150mm
Accuracy: 0.1mm
Features & Benefits
- To determine the characteristics of open channel flow over a rectangular notch
- To determine the characteristics of open channel flow over a triangular (vee) notch
- To determine values of the discharge coefficient for both notches
Armfield – F1-13-MKII Flow Over Weirs Graph
F1-13-MKII Weirs:
- Stiffling Baffle and Inlet Nozzle
- Vernier Hook & Point Gauge with Instrument Carrier
- Regular V Plate Weir 90°
- Large V Plate Weir 90°
- Large Notch Plate Weir 30mm
- Large Notch Plate Weir 50mm
F1-13a Advanced Weirs:
- Large Trapezoidal weir 30mm
- Large Trapezoidal weir 50mm
- Large V plate weir 30◦
- Dog Bone weir
Hydraulics Bench Service unit F1-10
Overall dimensions of weir plate
Thickness: 0.002m
Width: 0.23m
Height: 0.16m
Dimensions of rectangular notch
Thickness: 0.002m
Width: 0.03m
Height: 0.082m
Angle of V notch weir: 90° inclusive
Hook & point gauge range: 0-150mm
Accuracy: 0.1mm
Requires Hydraulics Bench Service unit F1-10
F1-13-MKII
F1-13a
