The Free and Forced Vortex Apparatus for the study of the shape of ‘free and forced vortices’ consists of a cylindrical, transparent vessel, having two pairs of diametrically opposed inlet tubes of 9.0 mm and 12.5 mm diameter. The 12.5 mm diameter inlet tubes which are angled at 15° to he diameter, so that a swirling motion is imparted to the liquid entering the vessel, are used as entry tubes for the free vortex experiment.

A smooth outlet is centrally positioned in the base of the vessel and a set of push-in orifices of 24, 16, 12 and 8 mm diameter is supplied to reduce the outlet diameter to a suitable value. A gauge determines the profile of the vortex formed at the top of the vessel, housed on a diametrically mounted bridge piece, which measures the diameter of the vortex at various depths. This gives the co-ordinate points required to plot the vortex profile.

Ltekonline are the manufacturers of Free and Forced Vortex Apparatus used to demonstrate engineering principles in Engineering Colleges, Engineering Schools and Fluid Mechanics Lab Equipment for Engineering Teaching Lab in Universities