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Towards Online Steering of Flame Spray Pyrolysis Nanoparticle Synthesis [article]

Maksim Levental, Ryan Chard, Joseph A. Libera, Kyle Chard, Aarthi Koripelly, Jakob R. Elias, Marcus Schwarting, Ben Blaiszik, Marius Stan, Santanu Chaudhuri, Ian Foster
2020 arXiv   pre-print
Comparisons against standard implementations show our method to be an order of magnitude more efficient.  ...  Flame Spray Pyrolysis (FSP) is a manufacturing technique to mass produce engineered nanoparticles for applications in catalysis, energy materials, composites, and more.  ...  Future work will focus on improving memory access times and disk I/O optimizations. Figure 3 : 3 FSP imagery and droplet detected by using our method.  ... 
arXiv:2010.08486v1 fatcat:kfpcvvagpff3hdgnfyzhxaemom

Heat release mechanisms in inhibited laminar counterflow flames

K Lee
1996 Combustion and Flame  
Values of the radiative heat loss fraction remained relatively small ( = 2-3%) for all of the flames studied.  ...  For comparison, the effect on the heat release due to the purely thermal action of nitrogen (which does not exhibit chemical inhibition or heat release effects) was also investigated.  ...  Yang of UIC for several helpful discussions. Further details regarding the methodology are to be found in Ref 30.  ... 
doi:10.1016/0010-2180(95)00105-0 fatcat:wjc3xdchwbd5zdlxfsaqst63gu

Influence of turbulence on flame propagation during dust explosion [article]

Asquini Elena
2019 Zenodo  
This work consists of an experimental study on the influence of dispersion-inducedturbulence on aluminum dust flame propagation.  ...  Unfortunately the adaptation of the gas flame propagation models is not possible for metal dust; indeed the combustion reaction in this case occurs at the surface of the particles (heterogeneous reaction  ...  For values higher than 2.5g the method is not adequate as the high quantities of dust introduced create deposits on the walls of the prototype, thus preventing optical access to the phenomenon.  ... 
doi:10.5281/zenodo.3706670 fatcat:zfm427fxbbfr7ozac56bzyxski

Turbulent Flame Geometry Measurements in a Mass-Production Gasoline Direct Injection Engine

Villani, Aquino
2020 Energies  
Direct optical access to the combustion chamber of a gasoline direct injection (GDI) engine provides extremely valuable information about the combustion process.  ...  To determine the macroscopic properties of sprays and flames, visualization and digital image processing techniques are typically used in controlled experimental setups like single-cylinder optical engines  ...  [2] , used an optically accessible single-cylinder GDI engine to perform optical diagnostics. Images were first converted into 256-grey scale and masking was applied.  ... 
doi:10.3390/en13010189 fatcat:dd2rf5uiszbglghuejmb7mlzu4

Combustion Flame Spray of CoNiCrAlY & YSZ coatings

F. Fanicchia, D.A. Axinte, J. Kell, R. McIntyre, G. Brewster, A.D. Norton
2017 Surface & Coatings Technology  
As the CFS setup has a simple design, this research stimulates a miniaturization concept of the combustion flame spray torch for allowing its deployment into highly restricted workspaces.  ...  CFS-deposited coatings, although a higher content of oxide strings and porosity is observed compared to APS, also comparable phase transformations and a higher thermal cyclic lifetime can be achieved with an  ...  The authors would like to thank the Swiss Federal Laboratories for Materials Testing and Research, Laboratory for Mechanics of Materials and Nanostructures (EMPA) for providing access to investigatory  ... 
doi:10.1016/j.surfcoat.2017.01.070 fatcat:jj4wjxkyj5ftdb2e77q5fhnpw4

Practical aspects of implementing three-dimensional tomography inversion for volumetric flame imaging

Weiwei Cai, Xuesong Li, Lin Ma
2013 Applied Optics  
Instantaneous three-dimensional (3D) measurements have been long desired to resolve the spatial structures of turbulent flows and flame.  ...  Therefore, the results obtained in this work are expected to be valuable for the design and implementation of practical 3D diagnostics.  ...  For example, flame A had a known cone shape and a flame front thickness of 0.30 mm. Flame B is a stable and disk-like flame with a diameter of ∼61 mm and a thickness of ∼1 mm.  ... 
doi:10.1364/ao.52.008106 pmid:24513765 fatcat:g2ftr75mbraktcnfxdfbaqomhq

Flame Front Propagation in an Optical GDI Engine under Stoichiometric and Lean Burn Conditions

Santiago Martinez, Adrian Irimescu, Simona Merola, Pedro Lacava, Pedro Curto-Riso
2017 Energies  
In this paper, combustion was investigated in an optically accessible DISI single cylinder research engine fueled with gasoline.  ...  Lean fueling of spark ignited (SI) engines is a valid method for increasing efficiency and reducing nitric oxide (NO x ) emissions.  ...  A conventional Bowditch design was used for optical accessibility, with an optical crown (18 mm thick fused-silica window, which ensured a field of view 63 mm in diameter), which was screwed onto the piston  ... 
doi:10.3390/en10091337 fatcat:wperinykgrhidgxjj7ij4nvozu

Influence of coal dust on premixed turbulent methane–air flames

Scott R. Rockwell, Ali S. Rangwala
2013 Combustion and Flame  
This work ultimately aims to improve the knowledge on fundamental aspects of dust flames which is essential for the development of mathematical models.  ...  The objective of this study is to develop an experimental platform, called the Hybrid Flame Analyzer (HFA), capable of measuring the laminar and turbulent burning velocity of gas, dust, and hybrid (gas  ...  A neutral filter with an optical density of about three had to be used to attenuate the flame radiation. Andac et al.  ... 
doi:10.1016/j.combustflame.2012.10.025 fatcat:wvn7qonmqngujinjlcm6uf5bre

Fluorescence lifetime imaging in a flame

A. Ehn, O. Johansson, J. Bood, A. Arvidsson, B. Li, M. Aldén
2011 Proceedings of the Combustion Institute  
., Development of a picosecond lidar system for large-scale combustion diagnostics, Appl. Opt., 48, B65-B72, 2008.  ...  ., Development of a temporal filtering technique for suppression of interferences in applied laserinduced fluorescence diagnostics, Appl. Opt., 48, 2373-2387, 2009. II.  ...  Therefore, optical techniques that can perform mea-surements from a single-ended optical access is of utmost importance.  ... 
doi:10.1016/j.proci.2010.05.083 fatcat:einubjd6o5cjzejvfleu7kfy4q

Application of hyperspectral imaging and chemometrics for classifying plastics with brominated flame retardants

Daniel Caballero, Marta Bevilacqua, José Amigo
2019 Journal of Spectral Imaging  
Thus, the application of DT with hyperspectral imaging could be used to sort plastic samples with respect to the type of polymer and the flame retardant used with a high degree of accuracy in an automated  ...  These findings are highly valuable for the plastic and waste management industries.  ...  Acknowledgements Daniel Caballero thanks the "Junta de Extremadura" for a post-doctoral grant (PO17017).  ... 
doi:10.1255/jsi.2019.a1 fatcat:lm7jgqd2a5dgxpyttjfguk7k4e

Soot formation in laminar counterflow flames

Yu Wang, Suk Ho Chung
2019 Progress in Energy and Combustion Science  
Many practical soot-emitting combustion systems such as diesel and jet engines rely on diffusion flames for efficient and reliable operation.  ...  This review concludes with a summary of the knowledge and challenges gathered and demonstrated through decades of research, and an outlook on opportunities for future counterflow flame−based soot research  ...  Related issues include, for example, probe clogging for intrusive methods and signal attenuation/beam steering for optical methods [19] .  ... 
doi:10.1016/j.pecs.2019.05.003 fatcat:uin73svi5rgy7hmicmlj73e7la

Heat release mechanisms in inhibited laminar counterflow flames

L. Yong Lee
1996 Fuel and Energy Abstracts  
Values of the radiative heat loss fraction remained relatively small ( = 2-3%) for all of the flames studied.  ...  For comparison, the effect on the heat release due to the purely thermal action of nitrogen (which does not exhibit chemical inhibition or heat release effects) was also investigated.  ...  Yang of UIC for several helpful discussions. Further details regarding the methodology are to be found in Ref 30.  ... 
doi:10.1016/0140-6701(96)88875-8 fatcat:c55qxa4sjfcdda3o6cyiky75uy

On the Role of the Flaming to Smoldering Transition in the Seasonal Cycle of African Fire Emissions

Bo Zheng, Frederic Chevallier, Philippe Ciais, Yi Yin, Yilong Wang
2018 Geophysical Research Letters  
Plain Language Summary Fire is an integral component of African ecosystems, which emits large amounts of trace gases, pollutants, and aerosols into the atmosphere.  ...  Here we used a Bayesian atmospheric inversion approach to analyze the seasonal variation in CO emissions, CO emission factors, and combustion efficiency of African savanna fires.  ...  Marabelle for computer support at LSCE. The present work was also granted access to the HPC resources of TGCC under allocation A0030102201.  ... 
doi:10.1029/2018gl079092 fatcat:iguvq4plnzcfbeennygmnkctpm

Coherent Anti-Stokes Raman Spectroscopy measurements of temperature fluctuations in turbulent natural gas-fueled piloted jet diffusion flames

John Mantzaras, Theo H. van der Meer
1997 Combustion and Flame  
Temperature fluctuations have been measured in a turbulent, natural gas-fueled, piloted jet diffusion flame with a fuel jet exit Reynolds number of 9700, using broadband Coherent Anti-Stokes Raman Spectroscopy  ...  x/d > 25 and by 150 K for x/d = 8.3.  ...  An octagonal combustion chamber 0.9 m high and 0.57 m wide with optical access from all sides is located in the test section.  ... 
doi:10.1016/s0010-2180(97)00070-9 fatcat:csnekovcfnclbbel3afp5534n4

A lean methane premixed laminar flame doped with components of diesel fuelI. n-Butylbenzene

E. Pousse, P.A. Glaude, R. Fournet, F. Battin-Leclerc
2009 Combustion and Flame  
A new mechanism for the oxidation of n-butylbenzene is proposed whose predictions are in satisfactory agreement with measured species profiles in flames and flow reactor experiments.  ...  The inlet gases contained 7.1% (molar) of methane, 36.8% of oxygen and 0.96% of n-butylbenzene corresponding to an equivalence ratio of 0.74 and a ratio C10H14 / CH4 of 13.5%.  ...  This chamber was equipped of four quartz windows for optical access, a pressure transducer (MKS 0-100 Torr), a microprobe for samples taking and a thermocouple for temperature measurements.  ... 
doi:10.1016/j.combustflame.2008.09.012 fatcat:irvjkruw5fajfaayij4ktztdf4
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