State-of-the-art Engineering Equipment

FM-432 | Flow Visualization Channel Apparatus

  • Visualisation of streamlines during incident flow and flow around various weirs and drag bodies
  • Transparent experimental flume
  • Incident flow demonstrated on two weirs
  • Demonstration of flow around four different drag bodies
  • Contrast medium: ink
  • Distributor for contrast medium with seven nozzles
  • Water level in the experimental flume adjustable via sluice gate at the water inlet and weir at the water outlet
  • Flow straightener for even, non-vortical water inlet
  • Water supply base module or via laboratory supply
  • LxWxH: 895x640x890mm
  • Weight: approx. 24kg
Technical Specification
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. FM-432 | Flow Visualization Channel Apparatus 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.
Learning Objectives
  • 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
Experimental flume
  • LxWxH: 625x20x150mm
Contrast medium: ink
  • Injection of the contrast medium
  • 7 nozzles
  • Tank for water: 12,5L
  • Tank for ink: 200mL
Drag bodies
  • small cylinder: Ø 35mm
  • large cylinder: Ø 60mm
  • streamlined body
  • guide vane profile
  • broad-crested weir
  • sharp-crested weir