A duct is provided and includes a tubular member having an inlet portion, an outlet portion and a central portion interposed between the inlet and outlet portions and a tributary tubular member fluidly coupled to the tubular member at the central portion. The tributary tubular member includes first and second torus sectors defining first and second apertures, respectively, through which an upstream end of the central portion extends. The second torus sector is disposed within the first torus sector to define a sectioned toroidal annulus about the first and second apertures and between an exterior surface of the second torus sector and an interior surface of the first torus sector.

A forward secant swirl tube may be used to separate heavier particles such as oil and moisture from an air flow. The swirl tube includes a central hub having a centerline and a circular perimeter. An outer circular housing extends from an inlet edge to an outlet edge. A plurality of vanes extends from the central hub to the outer housing. The vanes are equally spaced around the central hub. Each vane has an inlet transition portion connected to a discharge portion. The top edge of the inlet transition portion of each vane is offset from the centerline of the central hub forming a forward secant line with respect to the centerline of the central hub and a direction of spin induced by the plurality of vanes.

One illustrative cyclone separator disclosed herein includes an outer body, an inner body positioned at least partially within the outer body, an internal flow path within the inner body, the internal flow path having a fluid entrance and a fluid outlet, a first fluid flow channel between the inner body and the outer body, and a re-entrant fluid opening that extends through the outer body and is in fluid communication with the fluid flow channel, wherein the re-entrant fluid opening is positioned at a location upstream of the fluid entrance of the internal flow path in the inner body.

A turbine engine having a compressor section, a combustor section, a turbine section, and a rotatable drive shaft that couples a portion of the turbine section and a portion of the compressor section. A bypass conduit couples the compressor section to the turbine section while bypassing at least the combustion section. At least one particle separator is located in the turbine engine having a separator inlet that receives a bypass stream, a separator outlet that receives a reduced-particle stream flows, and a particle outlet that receives a concentrated-particle stream comprising separated particles. A conduit, fluidly coupled to the particle outlet, extends through an interior of at least one stationary vane.

Disclosed herein are phase separator devices, and related methods of fabrication and use. The disclosure provides improved phase separator devices for phase separation of input feeds, and systems/methods for utilizing and fabricating the devices. The disclosure provides phase separator devices utilizing inertial separation and porous media extraction for the phase separation of two-phase input feeds (e.g., to separate an input feed of a two-phase mixture to a first phase output (e.g., to a liquid output flow) and to a second phase output (e.g., to a gas output flow)). The device can separate a mixed fluid flow of both liquid and gases. The liquid and gas can include liquid and vapor phases of the same chemical/constituent (e.g., ammonia), or may include liquid and gases of two different constituents (e.g., liquid water and air). The phase separator devices can be utilized at standard gravity to micro-gravity to zero gravity environments.

A turbine engine having an inducer assembly. The inducer assembly includes a centrifugal separator fluidly coupled to an inducer with an inducer inlet and an inducer outlet. The centrifugal separator includes a body, an angular velocity increaser to form a concentrated-particle stream and a reduced-particle stream, a flow splitter, and an exit conduit fluidly coupled to the body to receive the reduced-particle stream and define a separator outlet.

A gas-liquid separation device comprises a container, an inlet tube, a liquid outlet tube, a gas outlet tube, and a swirl vane. The swirl vane is disposed in the inlet tube. A depression is provided on an inner circumferential surface of the inlet tube. The depression faces the swirl vane.

A vacuum cleaner separation system having: a cyclone tube having a cyclone chamber and an inner wall having a substantially cylindrical appearance defining a center axis; an inlet channel offset with respect to the center axis for receiving dust laden air; a dust outlet for discharging dust from the cyclone tube; an air outlet for discharging air from the cyclone tube; and a helical member arranged within the cyclone tube in an opposite region of the cyclone tube with respect to the air outlet. The helical member defines or partly defines a helical passage around the center axis from the inlet channel to the cyclone chamber for generating a centrifugal flow in the cyclone chamber. The helical passage has a substantially constant cross sectional area and the helical passage is rotated 360° or less than 360° around the center axis.

A precleaner arrangement for separating a portion of entrained material from air flow air entering an engine air cleaner. The precleaner arrangement includes a precleaner housing and at least a first flexible air deflection vane with a fixed portion secured to the precleaner housing and a deflectable portion. The deflectable portion includes a curved section extending from the fixed portion and a tail section extending from the curved section. The deflectable portion is configured to deflect in response to a sufficient air flow rate change through the precleaner arrangement, in use. Some arrangements will also include a second stage, outlet vane assembly.

A duct is provided and includes a tubular member having an inlet portion, an outlet portion and a central portion interposed between the inlet and outlet portions and a tributary tubular member fluidly coupled to the tubular member at the central portion. The tributary tubular member includes first and second torus sectors defining first and second apertures, respectively, through which an upstream end of the central portion extends. The second torus sector is disposed within the first torus sector to define a sectioned toroidal annulus about the first and second apertures and between an exterior surface of the second torus sector and an interior surface of the first torus sector.