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Full cone axial nozzle with constant jet angle

Computational fluid dynamics simulations | CFD

Full cone axial nozzle with constant jet angle

Computational fluid dynamics simulations  | CFD

THE PROJECT

The goal for which our technical department used CFD technology was the design of a full cone axial nozzle whose spray angle did not vary from the feed pressure, between 1 and 7 bar.

The classic full cone nozzles – also known as turbulence nozzles- use a special shaped vorticator positioned at their inlet that gives a rotational velocity to the fluid flowing through the nozzle.

Due to the rotational velocity of the fluid, the water jet at the outlet of the nozzle widens by centrifugal force, taking the form of a full cone. The angle of the cone, which can vary from 15 º to 120 º, is a function of the design of the nozzle but also of the supply pressure.

Nozzle section with patented vorticator inserted

THE RESULT

Our technicians were able to overcome this obstacle by designing a perforated vorticator -now already patented- that guarantees homogeneity of the spray angle regardless of the feeding pressure.

Studying this special vorticator in CFD, it was noted that one of the possible results was a rotating blade nozzle.

The nozzle cover area is the same as that of a full cone but, thanks to the blade shape, the pressure exerted at each point is greater.

Nozzle action analysis: rotating blade

Fluid dynamics of the nozzle