FM 100.22 Free and Forced Vortex, Rotating Paddle
Used in conjunction with hydraulics bench, to produce and measure free and forced vortices. Clear acrylic cylinder on a plinth. Free vortex by water discharging through interchangeable orifice at the base; profile measured by calliper and depth scale. Forced vortex by a paddle at the base rotated by water jets; profile measured by series of depth gauges. Velocity at any point is measured by Pitot tube.