Disclosed herein is an apparatus for facilitating improving flow of fluid in a duct, in accordance with some embodiments. The apparatus comprises a first portion, a third portion, and a second portion. Further, continuously attaching an inlet edge using an attachment member and an outlet edge defines an interior space. Further, a first amount of the fluid entering a first interior space through an inlet opening flows to a third interior space with a first velocity and a first direction. Further, portions of a second amount of the fluid flows into the third interior space through second openings with a second velocity and second directions. Further, the fluid flows from the third interior space with a third velocity and a cyclonic flow pattern for exiting through an outlet opening based on interacting of the portions of the second amount of the fluid with the first amount of the fluid.

A rectifier and a flowmeter, the rectifier including a fairing, wherein a first rectifying section (1) positioned at the upstream, a reducing section (2) positioned at the midstream and a second rectifying section (3) positioned at the downstream, can be arranged in the fairing. The first rectifying section and the second rectifying section are respectively provided with a group of rectifying channels parallel to the flow direction of fluid, and a through-hole (21) can be formed in the reducing section. The rectifier can provide improved rectification effects.

In one example, a fluid flow restrictor has a housing outlet offset from a housing inlet along a fluid flow direction so as to define a channel therebetween. A rotatable body that is disposed in the channel defines a bore that extends entirely therethrough such that the bore defines a bore inlet and a bore outlet. The flow restrictor has an interior surface disposed in the bore that defines an orifice having a cross-sectional dimension that is less than a cross-sectional dimension of the channel such that the orifice can restrict a flow of fluid as the fluid flows between the housing inlet and outlet. The rotatable body is rotatable between 1) a first orientation, where the bore outlet is offset from the bore inlet along the fluid flow direction, and 2) a second orientation, where the bore inlet is offset from the bore outlet along the fluid flow direction.

A cooling system for a battery module, said cooling system including: at least one flow tube adapted to receive a cooling fluid, wherein a material of the at least one flow tube is a polymer-based material, and a member attached on an inner wall of at least a part of the at least one flow tube, wherein a material of the member is a metal, said member being sized such as to reduce the flow of the cooling fluid through the at least one flow tube to thereby achieve a balanced flow.

Discharge grate intended to be mounted inside or at the outlet of a conduit of a discharge valve of a turbine engine of an aircraft, the discharge grate comprising an upstream face intended to receive a gas flow, a downstream face parallel to the upstream face and intended to deliver the gas flow received on the upstream face, and orifices passing through the perforated plate from the upstream face to the downstream face and intended to convey the gas flow through the perforated plate.

The discharge grate comprises for each orifice of the perforated plate a tubular channel, coaxial with the orifice with which it is associated, and projecting from the downstream face of the perforated plate.

A device that serves to increase the pressure on the outlets of water intakes in houses or gardens. This system to increase the water pressure is called salt-cellar-like device for increasing pressure. The salt-cellar-like device for increasing pressure has 6 external walls that give its body a hexagonal shape. These external walls allow the device to be held firmly by some tool that rotates the device, so that it is correctly inserted and attached to some water intake. The salt-cellar-like device for increasing pressure has a head that has a circular concavity on its upper part, as well as on the surface of this circular concavity there is an arrangement of conduits from which the water leaves the device to a higher pressure.

A damper device that includes an elongate body containing a passageway for fluid to flow there through and a first opening and a second opening, wherein the first opening and the second opening have an inside diameter. A throat is disposed within the body and between the first opening and the second opening of the elongate body having an inside diameter smaller than the inside diameter of the first opening and the second opening.

Disclosed herein is a dual density disc comprising a dense outer tube comprising a metal oxide having a purity of greater than 92%; and a porous core comprising a metal oxide of a lower density than a density of the dense outer tube; wherein the porous core has a metal oxide purity of greater than 99%; where the dense outer tube has an inner tapered surface.

Flow conditioner device (40), for use in a heat exchanger system (10). The flow conditioner device includes a honeycomb structure (42) and a mesh (44). The honeycomb structure is configured for rectifying an incoming gas flow (26), and is formed by walls that border channels extending in a flow direction (X) from inlet apertures at a leading surface, to respective outlet apertures at a trailing surface of the honeycomb structure. The mesh is formed by a plurality of wires that extend along further directions (Y, Z) transverse to the flow direction, and which are mutually spaced to define openings. The mesh is attached directly to the honeycomb structure and abuts the second surface, and cross-sectional areas of the openings defined along the further directions vary as a function of position along at least one of the further directions.

Various embodiments include systems and apparatuses for reducing contamination levels within optical chambers of particle-detection instruments. In one embodiment, an apparatus to reduce contamination within an optical chamber of a particle-detection instrument is described. The apparatus includes a plenum chamber to at least partially surround an aerosol-focusing nozzle of the particle-detection instrument and accept a filtered gas flow. A curtain-flow concentrating nozzle is coupled to the plenum chamber to produce a curtain flow into the optical chamber to substantially surround an aerosol flow. Other methods and systems are disclosed.