Flow Visualisation Apparatus (Model: FM 22) uses water as the following medium. The size and shape of the unit match the basic hydraulic bench, however the unit can also be operated without the bench. During the experiments than can be made on different drag bodies, ink is injected into a flow chamber via fine nozzles. The chamber is covered with a glass panel, this allows optimal observation of the flow lines. Furthermore, using four additional holes, flow sources and flow sinks can be simulated, in this way the analogy to potential field theory can be clearly demonstrated. The water flow rate and the amount of
ink injected can be adjusted using regulator valves.