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Showing 1 to 20 of 21 for “"jet penetration"”.
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A Study of Fluid Jet Penetration
Made available in DSpace on 2014-12-05T19:16:02Z (GMT). No. of bitstreams: 1 6206162.pdf: 4532984 bytes, checksum: 211c8b815dc8bf94ae242b9a94eaaa13 (MD5) Previous issue date: 1962
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A Study of Liquid Jet Penetration of Liquids with Interfacial Boiling of the Continuous Phase
Made available in DSpace on 2017-07-06T18:56:13Z (GMT). No. of bitstreams: 3 Schneider_Jeffrey_P_MS.pdf: 52990407 bytes, checksum: 325aba8ed028959437bd090d9d303fb9 (MD5) Schneider_Jeffrey_P_MS_ABS.pdf: 728875 bytes, checksum: 434bca97805fea99d98201d108b69eb4 (MD5) license.txt: 4813 bytes, checksum: …
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An Experimental Investigation of the Injection Process in a Direct-Injected Natural Gas Engine Using PLIF and CARS
… equations effectively collapsed fuel jet penetration measurements under both motoring and stationary piston conditions. The scaling factors are based on the pseudo diameter of the jet, which is the diameter of an equivalent sonic jet expanded to match the in-cylinder conditions. The …
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Visualization of transient single- and two-phase jets created by diesel engine injectors
Propagation of single- and two-phase transient jets for direct injection of natural gas and natural gas with pilot (liquid) into diesel engines has been investigated experimentally by optical methods. The jets created by three (diesel, gas, and gas-diesel) electronically controlled injectors, were …
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Investigation of liquid fuel jet injection into a simulated subsonic "dump" combustor
… and spark shadowgraphs were used to obtain jet penetration and break-up information. Oil drop surface flow studies showed details of the flow in the recirculation region behind the step. The injectant for these cold flow studies was selected as water, which was injected transversely to the …
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The use of shaped explosive charges to investigate permeability, penetration, and fracture formation in coal, dolomite and plexiglas
… coal models after fracturing with shaped charge jets, 2) fracture formation in coal and other brittle materials, and 3) jet penetration capabilities of charges loaded with permissible explosives. The first order penetration law, the Allison-Vitali equations, and their modification by DiPersio to …
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Interactions Between Supersonic Gas Jets and Gas-Solid Fluidized Beds
… this research is a new, innovative process while jet attrition is already used in fluid cokers. In addition to fluid cokers, other applications of jet attrition in fluidized beds are in processes for the production of agricultural products, chemicals, carbon black, ceramics, minerals and metals, …
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Effect of physical properties on break-up and atomization of liquid jets in a supersonic crossflow
… break-up and atomization of a transverse liquid jet in a supersonic airstream was conducted. The tests were run at Mach 3 with ambient stagnation temperature and stagnation pressure of 2.4 atm. Viscosity and surface tension of the injectant along with the injector diameter and the ratio of the …
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An Experimental Investigation Into the Effect of Plasma on the Flow Features of an Axisymmetric Jet
… the mean and turbulent velocity profiles of the jets tested - allowing the jet core to penetrate further downstream. Large scale structure tracking indicated an increase in convective velocity of up to 5%. Heating of the shear layer by the plasma field was believed to bias the convective velocity …
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Hybrid Eulerian/Lagrangian 3D methods for high Reynolds number reactive flows
… the numerical simulation of turbulent reactive jet flows through the design of a hybrid Eulerian/Lagrangian and massively parallel 3D numerical simulation tool. The adaptivity of the resulting software yields truly fast and accurate simulations, and a better understanding of the simulated …
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Heat transfer between a shallow fluidized bed and a single horizontal tube immersed in the bed
… feature of shallow bed systems; furthermore, the jet region has shown a dominant effect on the behavior of the shallow bed heat transfer. The results showed that the heat transfer coefficient increased monotonically with increasing air velocity when the tube was located in the jet region, and the …
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An evaluation of the entrance requirements at Radford College
… feature of shallow bed systems; furthermore, the jet region has shown a dominant effect on the behavior of the shallow bed heat transfer. The results showed that the heat transfer coefficient increased monotonically with increasing air velocity when the tube was located in the jet region, and the …
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Distributions across the plume of transverse liquid and slurry jets in supersonic airflow
Liquid and slurry jets were injected through a circular orifice transverse to a M = 3.0 airflow. Mass samples of both jets were taken across the plume 30 injector diameters downstream. Pitot and static pressure surveys were taken across the liquid jet. These data allowed the calculation of …
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Characterization of inclined oscillating jets and crossflow interaction for use in active flow control
… the interaction of inclined fluidic oscillator jets with a crossflow across a range of different blowing ratios. The fluidic oscillators used in the current study featured rounded internal feedback channels and produced spatially oscillating jets at predictable frequencies. When integrated into …
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Turbulent fluid jet excavation in cohesive soil : with particular application to jet grouting
This thesis reviews the jet grouting methodology, and the current state of practice and research. Current methods of prediction of jet grout diameters are highly empirical and site specific, and do not take into account the jet hydrodynamics and soil properties explicitly. A rational model to …
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Experimental observations of aluminum particle combustion during hypervelocity water impact and penetration
… the reaction between Al shaped charge jets and underwater environments. Although many qualitative and semi-quantitative characteristics are known, including pressure field augmentation, light emission from combusting material, and oxide-containing powder residues, the actual combus- …
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Flow Field and Soot Formation Characteristics in Swirl-stabilized Non-premixed Turbulent Flames
… different fuels: methane, ethanol and aviation Jet A-1. The studied flames were confined and stabilized in a model gas turbine combustor with a swirl number of ~0.55. Soot volume fraction, fv, and primary soot particle size, dp, were measured using auto-compensating laser-induced incandescence, …
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Hydrodynamics and heat transfer in shallow fluidized beds
… a shallow bed reflect pressure recovery in jets formed immediately above a gas distributor at the bottom of the bed. Pressure-recovery data provide an effective means of distinguishing a shallow bed from a deep one, and suggest that the power consumption across a fluidized bed can be reduced …
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Understanding the development of a reacting fuel jet inside an automotive-size diesel engine using optical and laser-based diagnostics
The fuel penetration and reacting diesel jet development have been studied in a small-bore optical engine to improve the understanding of a swirl-influenced, wall-interacting diesel flame. The optical access to the engine combustion chamber was made possible via multiple quartz windows positioned …
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Syngas ash deposition for a three row film cooled leading edge turbine vane
… is used to model the flow field of the coolant jet-mainstream interaction and the deposition of syngas ash in the leading edge region of a turbine vane is modeled using a Lagrangian framework. The three row leading edge vane geometry is modeled as a symmetric semi-cylinder with a flat afterbody. …
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