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Dimensionless numbers (or characteristic numbers) have an important role in analyzing the behavior of fluids and their flow as well as in other transport phenomena. [1] They include the Reynolds and the Mach numbers, which describe as ratios the relative magnitude of fluid and physical system characteristics, such as density, viscosity, speed of sound, and flow speed.
After splitting from SPX Flow, SPX acquired both CUES Inc., a pipeline inspection manufacturer, and Schonstedt Instrument Co., a manufacturer and distributor of magnetic locator products, in 2018. [18] [19] In December of that year, SPX announced that it would also acquire the marine and aviation warning-light corporation Carmanah Technologies ...
In dimensional analysis, the Strouhal number (St, or sometimes Sr to avoid the conflict with the Stanton number) is a dimensionless number describing oscillating flow mechanisms. The parameter is named after Vincenc Strouhal , a Czech physicist who experimented in 1878 with wires experiencing vortex shedding and singing in the wind.
In hydrometry, the volumetric flow rate is known as discharge. Volumetric flow rate should not be confused with volumetric flux, as defined by Darcy's law and represented by the symbol q, with units of m 3 /(m 2 ·s), that is, m·s −1. The integration of a flux over an area gives the volumetric flow rate. The SI unit is cubic metres per ...
Such flow is called viscous drag flow or laminar flow, as opposed to the turbulent flow measured by orifice plates, Venturis and other meters mentioned in this section, and is characterized by Reynolds numbers below 2000. The primary flow element may consist of a single long capillary tube, a bundle of such tubes, or a long porous plug; such ...
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The Trent 900 is an axial flow, high bypass turbofan with the three coaxial shafts of the Rolls-Royce Trent family. The 2.95 m (116 in) fan with swept blades is driven by a 5-stage LP turbine, the 8-stage IP compressor and the 6-stage HP compressor are both powered by a single stage turbine, with the HP spool rotating in the opposite direction of the others.
Data from ROTAX 377 UL Data Sheet General characteristics Type: two-stroke air-cooled aeroengine Bore: 62 mm (2.44 in) Stroke: 61 mm (2.40 in) Displacement: 368.3 cc (22.48 cu in) Dry weight: 38.4 kg (84.6 lb) (complete including reduction drive and exhaust system) Components Valvetrain: piston ports Fuel system: pneumatic pump pressurized Fuel type: premium unleaded autofuel Oil system ...