DESCRIPTION The channel consists of a clear acrylic working section of large depth-to-width ratio incorporating undershot and overshot weirs at the inlet and discharge ends respectively. Water is fed to the streamlined channel entry via a stilling tank to reduce turbulence. Water discharging from the channel is collected in the volumetric tank of the hydraulics bench and returned to the sump for recirculation. A dye injection system incorporated at the inlet to the channel enables flow visualisation in conjunction with a graticule on the rear face of the channel. Models supplied with the channel include broad and sharp-crested weirs, large and small-diameter cylinders and symmetrical and asymmetrical aerofoils. These in conjunction with the inlet and discharge weirs, permit a varied range of open channel and flow visualisation demonstrations, Adjustable feet permit levelling. TECHNICAL SPECIFICATIONS Diameter of test pipe:3.0mm Length of test pipe:760mm Distance between pressure tapping points: 500mm Range of mercury manometer: 500mm Range of water manometer: 500mm Measuring cylinder capacity: 1000ml Requires Hydraulics Bench Service unit F1-10/F1-10-2 EXPERIMENTAL CONTENT To visualise flow patterns around immersed objects in an open channel Demonstration of flow phenomena in an open channel Undershot and Overshot weirs Broad Crested and Sharp Crested Weirs Discharge beneath a sluice gate Creation of a hydraulic jump downstream of a sluice gate and weir Drowning of a sluice gate and weir Flow over a broad crested and sharp edged weir Supercritical (fast) and sub-critical (slow) flows over the weir
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