A5084874871- Advanced Combustion Engine Technologies
- Combustion and flame dynamics
- Fluid Dynamics and Heat Transfer
- Nuclear Physics and Applications
- Electrohydrodynamics and Fluid Dynamics
- Aerosol Filtration and Electrostatic Precipitation
- Laser-induced spectroscopy and plasma
- Plant Surface Properties and Treatments
- Rocket and propulsion systems research
- Engineering Applied Research
- Laser-Plasma Interactions and Diagnostics
- Nuclear reactor physics and engineering
- Atomic and Molecular Physics
- Advanced X-ray Imaging Techniques
- Heat transfer and supercritical fluids
- Catalytic Processes in Materials Science
- Tropical and Extratropical Cyclones Research
- Cyclone Separators and Fluid Dynamics
- Fluid Dynamics and Turbulent Flows
- Ocean Waves and Remote Sensing
- Oceanographic and Atmospheric Processes
- Combustion and Detonation Processes
- Energetic Materials and Combustion
- Cavitation Phenomena in Pumps
- Computational Fluid Dynamics and Aerodynamics
Sigray (United States)
2020-2022
Argonne National Laboratory
2016-2020
Jacobs (United States)
2019
Cracow University of Technology
2016
University of Passau
2012
The internal details of fuel injectors have a profound impact on the emissions from gasoline direct injection engines. However, injector design features is not currently understood, due to difficulty in observing and modeling flows. Gasoline flows involve moving geometry, flash boiling, high levels turbulent two-phase mixing. In order better simulate these injectors, five different approaches been employed study engine combustion network Spray G injector. These simulation results compared...
The flow inside direct-injection diesel nozzles is strongly influenced by the local geometry. Deviations from design geometry and nonuniformities along fuel’s path can alter expected spray behavior. influence of small-scale variations in internal not well understood due to a lack data available experimentalists modelers that resolve such features. To address need for more accurate measurements also quantify error bounds on manufacturing variability, 7-BM beamline Advanced Photon Source at...
Abstract The multiphase flow inside a diesel injection nozzle is imaged using synchrotron X-rays from the Advanced Photon Source at Argonne National Laboratory. Through acquisitions performed several viewing angles and subsequent tomographic reconstruction, in-situ 3D visualization achieved for first time steel injector engine-like operating conditions. morphology of internal reveals strong separation vapor-filled cavities (cavitation), degree which correlates with nozzle’s asymmetric inlet...
Abstract Herein, the mechanical behaviors of Li 10 GeP 2 S 12 (LGPS) solid electrolytes during electrochemical cycling using operando X‐ray tomography are investigated. It is demonstrated that bulk decomposition LGPS when cycled against lithium a direct result reduction electrolyte at LGPS/Li 0 interface. The reductive plating results in formation low‐density domains electrode/electrolyte interface, which impose sufficient stress on underlying to crack SE pellet. critical developed prior...
In order to improve understanding of the primary atomization process for diesel-like sprays, a collaborative experimental and computational study was focused on near-nozzle spray structure Engine Combustion Network Spray D single-hole injector.These results were presented at 5th Workshop in Detroit, Michigan.Application x-ray diagnostics standard cold condition enabled quantification distributions mass, phase interfacial area, droplet size region from 0.1 14 mm nozzle exit.Using these data,...
Making quantitative measurements of the vapor distribution in a cavitating nozzle is difficult, owing to strong scattering visible light at gas–liquid boundaries and wall boundaries, small lengths time scales involved. The transparent models required for optical experiments are also limited terms maximum pressure operating life. Over past few years, x-ray radiography Argonne’s Advanced Photon Source have demonstrated ability perform line sight projected fraction submerged, plastic nozzles....
The dense spray region in the near-field of diesel fuel injection remains an enigma.This is difficult to interrogate with light visible range and model due rapid interaction between liquid gas.In particular, modeling strategies that rely on Lagrangian particle tracking droplets have struggled this area.To better represent strong phases, Eulerian has proven particularly useful.Models built concept surface area density are advantageous where primary secondary atomization not yet produced...
Post-injection fuel dribble is known to lead incomplete atomisation and combustion due the release of slow-moving, often surface-bound, liquid after end injection. This can have a negative effect on engine emissions, performance injector durability. To better quantify this phenomenon, we developed an image-processing approach measure volume ligaments produced during We applied our processing Engine Combustion Network ‘Spray B’ 3-hole injector, using datasets from 220 injections generated by...
Specific surface area measurements of diesel sprays were performed using ultra-small-angle x-ray scattering at the 9-ID beamline Advanced Photon Source Argonne National Laboratory. Injector orifice type, rail pressure, and ambient pressure effects explored. The targeted created by three different single-hole nozzles fitted with duplicate light-duty common injector bodies. One has been designed to cavitate under typical operating conditions, while other two are its non-cavitating analogues...
The X-ray Fuel Spray research at Argonne National Laboratory is aimed utilizing synchrotron diagnostics for providing insights into automotive fuel injection. One important task to generate high-fidelity geometries or iso-surfaces of steel injector nozzles from Computed Tomography measurements, be used as inputs realistic CFD simulations flow. These contain 3D features between 5 - 500 micron and are imaged a pixel resolution 1 micron. main bottleneck automated generation an STL geometry CT...
X-ray phase contrast imaging is conducted at 90,517 Hz on a fuel spray to characterize the breakup of bulk into ligaments and individual droplets in single-sector, swirl-stabilized combustor under reacting conditions. Phase used qualitatively assess for two fuels: Jet-A, which represents normal viscosity fuel, blend JP-5 (64%) farnesane (36% by volume), high-viscosity three fuel-flow rates air inlet temperatures. Time-series images fuels show that atomization occurs much more rapidly higher...
A new diagnostic for the quantification of Sauter mean diameter in high-pressure fuel sprays has been recently developed using combined optical and X-ray measurements at Georgia Institute Technology Argonne National Laboratory, respectively. This utilizes liquid scattering extinction from diffuse back-illumination imaging, conducted Tech, absorption radiography, Argonne’s Advanced Photon Source. The diagnostic, entitled scattering–absorption measurement ratio, quantifies two-dimensional...