Technological Comparison of Pressure Profiles for Vortexx® Nozzles versus Standard Nozzles

The Vortexx^® Fluted Jet has a patented interior surface geometry that produces a pressure distribution on the surface that varies with each radial plane. The first figure, Periodic Planes in Vortexx^® Nozzle illustrates how destroying the axisymmetry of a classical jet can make the negative pressure cell (which for the classical nozzle lies above the impingement surface) intersect the surface, thereby creating a suction on the surface.

The other two figures, Pressure Profile - Bottom and - Side View show a "three flute" version of the Vortexx^® nozzle. The figures are color contour level plots showing the fluctuations in pressure within the flow. The surface colors denote (approximate) pressure values from +70 psi (light blue) to hydrostatic (dark blue) to -12 psi (red).

The side view sketches, to scale, how the pressure drops off from maximum in the center to below hydrostatic (and thus becomes an actual suction in some applications) over a significant region. That region corresponds to the three red segments in the bottom view. The pressure distribution in the second plane is mainly positive but does drop below hydrostatic in some regions (shown dark green in the other two figures). 

Click on a picture to see it in a larger size.

Periodic Planes in Vortexx® Nozzle	Pressure Profile - Bottom View	Pressure Profile - Side View

Conventional Technology

Classic Circular Nozzle	Pressure Profile - Bottom View	Pressure Profile - Side View

The classic circular nozzle, shown in the left figure, produces only positive pressure against the surface. The figure sketches a cell of negative pressure lying above the impingement surface.

The Pressure Profile - Bottom and - Side View are color contour level plots of the radial section showing the rapid decline in pressure from the center point maximum to outer minimum (hydrostatic) value. The surface colors denote (approximate) pressure values from +70 psi (light blue) to -12 psi (red). Note that the pressure does not dip below hydrostatic (dark blue).