Results 51 to 60 of about 583 (83)

Soot and Flame Structures in Turbulent Partially Premixed Jet Flames of Pre-Evaporated Diesel Surrogates with Admixture of OME_n

Fluids
In this study, the soot formation and oxidation processes in different turbulent, pre-evaporated and partially premixed diesel surrogate flames are experimentally investigated.
Steffen Walther, Tao Li, Dirk Geyer, Andreas Dreizler, Benjamin Böhm   +4 more
doaj   +1 more source

Numerical Analysis of Soot Dynamics in C₃H₈ Oxy-Combustion with CO₂ and H₂O

Energies
Oxygen-enriched combustion is increasingly recognized as a viable approach for clean energy production and carbon capture, offering substantial benefits for boosting combustion efficiency and mitigating pollutant emissions, which makes it widely adopted ...
Yue Xin, Bowen Liang, Yindi Zhang, Mengting Si, Jinisper Joseph Cunatt   +4 more
doaj   +1 more source

Heterogeneous conversion of NO₂ and NO on HNO₃ treated soot surfaces: atmospheric implications [PDF]

Atmospheric Chemistry and Physics, 2005
In the present study, the heterogeneous conversion of nitrogen oxide (NO) and nitrogen dioxide (NO2) was studied at atmospheric humidity levels on flame soot surfaces treated with gaseous nitric acid (HNO3).
J. Kleffmann, P. Wiesen
doaj  

Predictions of soot formation in burner-stabilized stagnation flames using various reaction mechanisms

Journal of Thermal Science and Technology
To clarify the effects of reaction mechanisms on soot formation, a two-dimensional numerical simulation was performed for a burner-stabilized stagnation flame.
Shion ANDO, So SHIMAMURA, Shunsuke SATO, Kenshin KOYAMA, Osamu MORIUE   +4 more
doaj   +1 more source

Soot aerosols from commercial aviation engines are poor ice-nucleating particles at cirrus cloud temperatures [PDF]

Atmospheric Chemistry and Physics
Ice-nucleating particles catalyze ice formation in clouds, affecting climate through radiative forcing from aerosol–cloud interactions. Aviation directly emits particles into the upper troposphere where ice formation conditions are favorable.
B. Testa, L. Durdina, P. A. Alpert, F. Mahrt, C. H. Dreimol, C. H. Dreimol, J. Edebeli, C. Spirig, Z. C. J. Decker, J. Anet, Z. A. Kanji   +10 more
doaj   +1 more source

Atomic-scale insights into laser-induced patterned graphitization of combustion-derived soot

Chemical Physics Impact
Soot has long been recognized as a representative combustion by-product and a major contributor to environmental pollution. Direct utilization of soot as a functional carbon material is fundamentally limited by its high defect density and intrinsically ...
Hyo Jung Choi, Su A Kim, Sung Yeob Jeong, Bo Sung Shin   +3 more
doaj   +1 more source

Planar laser-induced incandescence for the study of soot production in a multi-sector RQL Jet A combustor

Applications in Energy and Combustion Science
Understanding the production of non-volatile particulate matter (nvPM), which is composed primarily of soot, is critical not only for reducing emissions but also for improving engine performance.
Russell McGrath, Jeremiah Juergensmeyer, Robert Bond, Ezekiel Bugay, Shawn Wehe, David Wu, Adam Steinberg, Wenting Sun, Yi Chen Mazumdar   +8 more
doaj   +1 more source

Optical diagnostics of fuel induced soot formation: color ratio pyrometry of in-cylinder soot in a DISI engine

Automotive and Engine Technology
The rapid diversification of gasoline-derived fuels demands a deep understanding of in-cylinder soot formation mechanisms, especially under the transient and low-temperature conditions characteristic of cold-start operation.
Lukas Heinz, Uwe Wagner, Thomas Koch
doaj   +1 more source

Assessment of soot formation and thermal radiation in syngas flame using oxygen-enhanced combustion under lean mixing conditions and acetylene doping

International Journal of Thermofluids
Combustion is a predominant global energy source, yet it contributes substantially to environmental degradation through greenhouse gas emissions and particulate matter, including soot.
Alex Álisson Bandeira Santos, Paulo Roberto Freitas Neves, Pollyana da Silva Melo, Willams Teles Barbosa, Joyce Batista Azevedo, Lilian Lefol Nani Guarieiro   +5 more
doaj   +1 more source

Ion-chemistry-enhanced modeling of soot formation in diesel engines: a multi-zone thermodynamic approach with ionic reaction mechanisms

Chemical Engineering Journal Advances
Soot formation in diesel engines remains a critical challenge due to its adverse environmental and health impacts, necessitating precise predictive models.
Milad Mohammadi, Elaheh Neshat, Alireza Rezaei, Damon Honnery   +3 more
doaj   +1 more source