A vortex flow apparatus including a cylindrical housing that contains a fluid that flows in a swirling circular path. The apparatus may be utilized as a muffler for a combustion engine, a particle separator, or an energy conversion device that physically or chemically acts upon the fluid flow and particles contained within the apparatus. The housing defines an inlet opening that opens into the first end of the housing proximate a first end wall. An outlet tube defines an outlet opening through a first end wall. A projection is attached to a second end wall of the housing and extends into the housing. The outlet tube and projection are aligned with and centered relative to a central axis.

Apparatus or creating a swirling flow of fluid comprises a transmission base with an internal cavity to receive the fluid flow from outside via a side penetrable hole which the longitudinal inner surface of the transmission base will be in shape of slope of continuous line, or slope of line intervals with different degree of slope, or slope of line intervals with at least one bending angle or slope of curve either convex curve or concave curve with at least one curvature to increase or decrease acceleration of swirling flow along the longitudinal internal cavity and in the manner of a laminar swirling flow. And beside the side penetrable hole will become a side hole edge for regulating the flow of fluid to flow inside the transmission base in the manner of a laminar swirling flow in the internal cavity of transmission base which a part of the hole side edge can have an elevated insert shoulder for stacking the attachment to overlay on the insert supporting shoulder of another transmission base stack them higher.

A flow deflector arrangement is used in combination with a pipe arrangement secured through a component, the flow deflector arrangement comprising: a nut to secure the pipe arrangement to the component, and a shroud for attachment to the component so as to extend at least partially around the pipe arrangement when the pipe arrangement is secured to the component by the nut. The nut has an outwardly directed flange to adopt a position spaced from the component, and the shroud defines at least one deflector surface which, when the shroud is attached to the component, extends away from the component in spaced relation to the pipe arrangement. The flange and the deflector surface cooperate in deflecting a flow of fluid flowing from the component and along the outside of the pipe arrangement such that the flow is deflected generally outwardly from the pipe arrangement with a degree of swirl.

A method for treating effluent provides the effluent as an input to an apparatus having a vortex diode with aeration. The apparatus induces a cavitation assisted with aeration for the high rates of ammoniacal nitrogen in an orifice and the vortex diode with or without inserts/stabilizers to generate radicals, which reduce ammoniacal nitrogen of wastewater effectively during effluent treatments.

A fluid flow conduit comprises a flow-shaping element shaped to control the velocity distribution of fluid flowing therethrough. A conduit body is shaped to define a longitudinally oriented interior flow region. The flow-shaping element comprises a flow-shaping channel shaped to provide a first curved channel portion curved about a longitudinal axis in a first angular direction to impart angular momentum about the longitudinal axis in the first angular direction on fluid flow therethrough. The flow-shaping channel may be shaped to provide a second curved channel portion that is curved about the longitudinal axis in a second angular direction (opposed to the first angular direction) to impart angular momentum about the longitudinal axis in the second angular direction on fluid flow therethrough. The flow-shaping channel may be shaped to provide one or more slits that communicate fluid between the first and second curved channel portions and a central bore portion.

A fluid flow resistor includes: a body having entry and exit fluid flow ports, and an internal fluid flow path fluidly extending between the entry and exit fluid flow ports; the internal fluid flow path having a first spiral fluid flow path in a first spiral direction, and a second spiral fluid flow path in a second spiral direction opposite the first spiral direction; each of the first spiral flow path and the second spiral flow path having a plurality of discrete flow chambers fluidly connected in series via interconnecting fluid flow restriction passages; the first and second spiral flow paths having a connecting fluid flow path therebetween; the fluid flow resistor being configured to resistively permit fluid flow from the entry fluid flow port to the exit fluid flow port via the first spiral flow path, the connecting fluid flow path, and the second spiral flow path, in succession.

There is described a drainage system comprising: an inlet pipe; and an energy dissipater comprising a dissipation chamber. The dissipation chamber has a dissipater inlet fluidically connected to the inlet pipe and a dissipater outlet arranged to discharge fluid from the dissipation chamber. The dissipater inlet extends between a first end and a second end. A wall of the inlet pipe extends tangentially from the dissipation chamber so as to define the first end and such that, in use, fluid is discharged into the dissipation chamber in a tangential direction, thereby inducing a circulating flow within the dissipation chamber about an axis of the dissipation chamber. The width of the dissipater inlet in a direction parallel to the axis decreases from the first end to the second end.

The invention discloses a vortex water flowing device, which comprises a basin body, wherein the top of the basin body is provided with an inner concave area with a smooth downward concave arc surface, a water leakage hole is arranged at the lowest point of the inner concave area, a spiral diversion groove from bottom to top and from inside to outside is arranged on the inner wall of the inner concave area, and a water outlet is arranged at the top of the basin body corresponding to the highest point of the diversion groove.

According to the present disclosure there is provided an arrangement for influencing liquid flow, the arrangement comprising: a first section selectively configurable to provide a vortex generator surface to induce vortices in the liquid flow. The arrangement further comprises a second section, wherein the first section and second section are movable relative to one another to provide the vortex generator surface.

A flow modifying device comprises an outer shell, a central tube within an interior space of the outer shell, and a plurality of helix vanes within the interior space. The central tube extends along at least a portion of a length of the outer shell. Each of the helix vanes extend along the outer shell and along the central tube. An outer edge portion of each of the helix vanes is attached to the outer shell and an inner edge portion of each of the helix vanes is located within a central passage of the central tube. In this manner, a first portion of each of the helix vanes extends between the outer shell and the central tube and a second portion of each of the helix vanes is located within the central passage of the central tube.