Free and Forced Vortex Apparatus

Free and Forced Vortex Apparatus for Educational Laboratory.

Product Code:

Free and Forced Vortex Apparatus

    Cylindrical vessel with four inlet/outlet ports for free and forced vortices
    Three interchangeable orifices and paddle wheel to fit in base of tank
    Measuring bridge with adjustable pointers and internal caliper to measure vortex dimensions
    Pitot tubes for estimation of velocities in vortex
    Quick release fittings for easy connection to hydraulics bench
    Educational Software available as an option


    The apparatus comprises a clear acrylic cylinder on a plinth designed to produce and measure free and forced vortices.
    The free vortex is generated by water discharging through an interchangeable orifice in the base of the cylinder and the resulting profile is measured using a combined caliper and depth scale.
    The forced vortex is induced by a paddle in the base of the cylinder which is rotated by jets of water. The profile of the forced vortex is determined using a series of depth gauges.
    Velocity at any point in the free or forced vortices may be measured using the appropriate pitot tube supplied.
    Dye crystals (not supplied ) may be used to demonstrate secondary flow at the base of the free vortex.

Technical Details:
Item     Value
Tank diameter:     245mm
Height to overflow point:     180mm
Orifice diameters:     8, 16 and 24mm
Forced vortex measuring probes
Distance from centre:     0, 30, 50, 70, 90 and 110mm
Pitot tubes having measuring
point (nose) at:     15, 25 and 30mm radius
Inlet tubes:     9 and 12.5mm diameter