Abstract: The injection system includes a Resonance Enhanced Microjet nozzle assembly. The assembly includes plates including top and bottom plates, a first inlet in the top plate and coupled to steady jet. The bottom plate includes a hollow cavity having a bottom surface. A tube within the bottom plate forms a first outlet that exits a supersonic pulsed actuation jet in the range of kHz from the bottom plate. A second outlet is in the bottom plate and positioned concentric about the tube to form a circular slit. The circular slit is directly coupled to the bottom surface of the cavity. A second inlet via a conduit is coupled to a secondary fluid stream and the cavity. The system significantly improves the mixing of an actuation jet with the steady stream injected up to 115% in comparison to a system that uses a steady actuation jet under same operating pressure.

Abstract: Embodiments of the present disclosure include an injection system. The injection system includes a Resonance Enhanced Microjet (REM) nozzle. The REM nozzles includes a REM nozzle block, the REM nozzle block having an inlet formed in a top and an outlet formed in a bottom, the inlet and outlet being fluid coupled together. The REM nozzle also includes one or more micronozzles positioned about the outlet, the one or more micronozzles having an outlet and being positioned at an angle relative to the bottom. Additionally, the REM nozzle includes an inlet conduit coupled to the REM nozzle block, the inlet conduit being fluidly coupled to the one or more micronozzles. The injection system also includes a source arranged proximate the top, the source directing a source jet of fluid into the inlet. The injection system includes a fuel supply fluidly coupled to the inlet conduit. Such a system can inject a fuel entrained in an oxidizer pulsing at very high-frequency.

Abstract: Embodiments of the present disclosure include an injection system. The injection system includes a Resonance Enhanced Microjet (REM) nozzle. The REM nozzles includes a REM nozzle block, the REM nozzle block having an inlet formed in a top and an outlet formed in a bottom, the inlet and outlet being fluid coupled together. The REM nozzle also includes one or more micronozzles positioned about the outlet, the one or more micronozzles having an outlet and being positioned at an angle relative to the bottom. Additionally, the REM nozzle includes an inlet conduit coupled to the REM nozzle block, the inlet conduit being fluidly coupled to the one or more micronozzles. The injection system also includes a source arranged proximate the top, the source directing a source jet of fluid into the inlet. The injection system includes a fuel supply fluidly coupled to the inlet conduit. Such a system can inject a fuel entrained in an oxidizer pulsing at very high-frequency.

Abstract: The elongated glass filament used in the filament concentrator of a micro cleanup and concentration apparatus for trace residue analysis by gas liquid chromatography includes a jacket with an elongated filament freely suspended from a feed tube and terminating with a distal end situated adjacent the reduced drip tip of the jacket and being centralized thereby due to the inner wall of the flow tip being concentric with but slightly spaced from the outer surface of the distal end of the filament. A hypodermic needle assembly extends between the chromatographic column and the feed tube to meter the eluant through the hypodermic needle, which is readily changed depending upon the flow rate required.