Fluidjets

A fluidjet is a stream of liquid that is expelled from a nozzle or orifice under pressure. The characteristics of a fluidjet, such as its velocity, shape, and trajectory, are determined by the properties of the fluid, the design of the nozzle, and the pressure applied. Fluidjets can be used for a wide variety of applications, ranging from industrial processes to medical treatments.

In industrial settings, fluidjets are commonly employed for cleaning, cutting, and surface treatment. High-pressure waterjets are effective at removing dirt, grease, and coatings from surfaces without the use of harsh chemicals. Abrasive fluidjets, which incorporate solid particles into the liquid stream, can be used for cutting hard materials like metal, stone, and composites. These jets can achieve precise cuts with minimal heat affected zones. Fluidjets are also used in painting and coating applications, where they can apply materials evenly and efficiently.

Beyond industrial uses, fluidjets have applications in fields such as medicine and dentistry. In dentistry, a specific type of fluidjet known as a dental water jet or oral irrigator is used to clean between teeth and along the gumline, supplementing traditional flossing. In surgery, controlled fluidjets can be used for precise tissue removal or for delivering medications. The study and control of fluidjets fall under the discipline of fluid dynamics, a branch of physics concerned with the motion of fluids. Research continues to explore new ways to harness the power and precision of fluidjets for technological advancement.