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HM 160.30 Overshoot Weir Show data sheet (pdf file)
Technical Description
The overshoot weir is one of the fixed forms of weirs, the water flows over the weir. The experimental set-up is placed on the flume base and positioned using bolts. The set-up consists of the weir plate on a mounting frame and lockable aeration tubes. Plastic tubular seals inserted in slots on the side of the weir plate complete the experimental set-up. The weir crest is chamfered at 45° and thus enables sharp edged, aerated overshoot. On real weirs, aerated overshoot is used to prevent oscillations in the weir locks; in the experiment the influence of the aerated zone on the flow at different flow rates is demonstrated.
Learning Objectives / Experiments
In conjunction with the HM 160, the following experiments are possible:
Discharge on an overflow weir
Investigation of flow action on aerated and non-aerated overflow
Occurrence of separation on a sharp edged weir
Difference between attached and separated flow


For the exact measurement of water levels, the HM 160.52 Level Gauge is recommended.
Features
Investigations on an aerated overshoot weir
Specification
[1] Fixed overshoot weir for fitting to the HM 160 Multi-Purpose Teaching Flume
[2] Experimental set-up for placing on the base of the flume, lxwxh 185x84x200mm
[3] Weir crest chamfered at 45°
[4] Weir body with lockable aeration tubes
Dimensions and Weight
l x w x h: 185 x 84 x 200 mm
Weight : approx. 1 kg
Scope of Delivery
1 experimental set-up, 1 set of accessories,
1 instruction manual
Order Details
070.16030 HM 160.30 Overshoot Weir
© 2005 G.U.N.T. Gerätebau GmbH