A liquid dispersing system includes a plate having a plurality of spaced holes passing through the plate. The plate has a thickness, a top portion, and a bottom portion, and each hole comprises a first opening at the top portion of the plate and a second opening at the bottom of the plate. The first opening and the second opening of each hole are differently-sized, so that the holes divide and disperse drops of the liquid into smaller droplets.

Disclosed is a deflector disc of a disc tube membrane module, including a deflector disc body, radial water distribution ribs, an inner support ring and an outer support ring. Bulges are arranged on the front and back sides of the deflector disc body; first and second ends of the radial water distribution rib are respectively fixedly connected with an inner edge of the deflector disc body and an outer edge of the inner support ring, an annular boss is arranged on the front side of the inner support ring, a seal ring groove is respectively arranged at corresponding positions of the front and back sides of the inner support ring, multiple yielding water collecting grooves are annularly and uniformly distributed on the inner surface of the inner support ring; an inner edge of the outer support ring is fixedly connected with an outer edge of the deflector disc body.

Fluid systems and methods for addressing fluid separation are described. An example fluid system includes a main body and a fluid pressurizer. The main body has a first portion, a second portion, an injection opening, a suction opening, a channel that extends from the suction opening to the injection opening, and a side wall. The first portion has a first axis that extends along the side wall. The second portion has a second axis that extends along the side wall at an angle relative to the first axis such that when fluid flows over the main body flow separation is defined adjacent to the second portion. The injection opening is disposed at a first location relative to said flow separation. The suction opening is disposed at a second location relative to said flow separation. The channel extends from the suction opening to the injection opening.

The invention pertains to the use of an easy-to-clean soft fiber-coated material on the underwater surface of structures to mimic mammal pelage and as such reducing residual drag, wherein said material comprises or consists of fibers having an average fiber length between 0.3 and 4 mm, and an average fiber thickness between 5 and 80 μm. The underwater surface of structure is preferably the hull of a movable or moving vessel, or the underwater part of a static structure such as offshore wind monopiles and off-shore rigs. In some embodiments, the invention pertains to the reduction of fuel consumption of a nautical vessel passing through water.

A baffle assembly and burner including the baffle assembly. The baffle assembly includes a collar having a central axis. A plurality of vanes are secured to the collar. Each vane includes a leg extending from the collar at a first angle with respect to the central axis. The first angle of the leg is configured to impart rotation to a flow of fluid through the baffle assembly. An impingement plate extends from the leg at a second angle with respect to the central axis. The second angle is greater than the first angle.

A vortex suppression device (10) for a fluid flowing along a pathway (A-E), including: an elongate body with an outer surface having an elongate leading section and an elongate trailing section along the length of the elongate body, in relation to a direction of fluid flow (A-E) when the device is located in the pathway, the elongate body having at least one channel (24a-24d, 26a, 26b) which extends from the elongate leading section to the elongate trailing section of the elongate body, the channel (24a-24d, 26a, 26b) being configured so that in use, when the device is in the pathway, the channel (24a-24d, 26a, 26b) allows fluid flow (J) towards the trailing section that disrupts the formation of vortices (D).

An intentional fluid manipulation apparatus (IFMA) assembly with a first thrust apparatus that imparts a first induced velocity to a local free stream flow during a nominal operation requirement. The first thrust apparatus creates a streamtube. A second thrust apparatus is located in a downstream portion of the streamtube. The second thrust apparatus imparts a second induced velocity to the local free stream flow. The second induced velocity at the location of the second thrust apparatus has a component in a direction opposite to the direction of the first induced velocity at the location of the second thrust apparatus.

A system includes a surface having a fluid flowing over the surface. The fluid includes a flow regime having a streamwise length scale greater than about 100 times η and less than about 100,000 times η, where η is a viscous length scale of the flow regime, and a convective time scale greater than about 10η′ and less than about 10,000η′, where η′ is a viscous time scale of the flow regime. The system includes a controller that causes at least one of motion the surface to modify fluid flow in the flow regime based on the streamwise length scale and the convective time scale or motion of the flow regime based on the streamwise length scale and the convective time scale.

An airflow adjusting apparatus includes two or more airflow generators and a controller. The airflow generators are arranged in first and second directions along a surface of an object. The airflow generators are configured to generate respective airflows in parallel directions parallel along the surface of the object. The second direction intersects with the first direction. The controller is configured to control outputs from the respective airflow generators independently of each other. The controller is configured to cause a total output from the airflow generators in a first group to be greater than a total output of the airflow generators in a second group. The airflow generators in the first and the second groups are arranged side by side in an airflow generation direction. The airflow generators in the second group are adjacent to those in the first group.

Fluid systems are described herein. An example embodiment of a fluid system has a first body portion, a second body portion, a plurality of supports, a plurality of fluid pressurizers, and a plurality of ducts. The first body portion and the second body portion cooperatively define an injection opening, a suction opening, and a channel that extends from the injection opening to the suction opening. The fluid pressurizer is disposed within the channel cooperatively defined by the first body portion and the second body portion. Each duct of the plurality of ducts is disposed within the channel cooperatively defined by the first body portion and the second body portion.