Results 21 to 30 of about 31,348 (305)

Cloud condensation nuclei activity, closure, and droplet growth kinetics of Houston aerosol during the Gulf of Mexico Atmospheric Composition and Climate Study (GoMACCS) [PDF]

, 2009
In situ cloud condensation nuclei (CCN) measurements were obtained in the boundary layer over Houston, Texas, during the 2006 Gulf of Mexico Atmospheric Composition and Climate Study (GoMACCS) campaign onboard the CIRPAS Twin Otter.
Dubey, Manvendra K., Feingold, Graham, Flagan, Richard C., Gates, Harmony, Jonsson, Haflidi H., Lance, Sara, Mazzoleni, Claudio, Murphy, Shane M., Nenes, Athanasios, Rissman, Tracey A., Seinfeld, John H., Sorooshian, Armin, Varutbangkul, Varuntida   +12 more
core   +2 more sources

Numerical investigation to evaluate the effects of gravity and pressure on flame structure and soot formation of turbulent non-premixed methane-air flame

Propulsion and Power Research, 2022
In this study, a turbulent non-premixed (diffusion) methane-air flame has been investigated computationally to analyze the influences of pressure and gravity on flame structure and sooting characteristics between 1 and 10 atm.
Subrat Garnayak, Amjad Ali Pasha, Radi Alsulami, Medhat A. Nemitallah, Abdul Gani Abdul Jameel, Sukanta K. Dash, V. Mahendra Reddy   +6 more
doaj   +1 more source

Development of a Multiphase Photon Monte Carlo Method for Spray Combustion and its Application in High-pressure Conditions [PDF]

, 2017
In this work the development of a multiphase photon Monte Carlo (PMC) method with a focus on resolving radiative heat transfer in combustion simulations is presented.
Cai, Jian, Modest, Michael F., Roy, Somesh   +2 more
core   +2 more sources

Laboratory and modeling studies on the effects of water and soot emissions and ambient conditions on the properties of contrail ice particles in the jet regime [PDF]

Atmospheric Chemistry and Physics, 2013
Contrails and contrail-induced cirrus clouds are identified as the most uncertain components in determining aviation impacts on global climate change. Parameters affecting contrail ice particle formation immediately after the engine exit plane (< 5 s in ...
H.-W. Wong, A. J. Beyersdorf, C. M. Heath, L. D. Ziemba, E. L. Winstead, K. L. Thornhill, K. M. Tacina, R. C. Ross, S. E. Albo, D. L. Bulzan, B. E. Anderson, R. C. Miake-Lye   +11 more
doaj   +1 more source

An Optimization Study on Soot-Blowing of Air Preheaters in Coal-Fired Power Plant Boilers

Energies, 2019
This paper presents a comprehensive approach for optimization of soot-blowing of air preheaters in a coal-fired power plant boiler. In the method, modeling of the cleanliness factor is firstly proposed to monitor the ash deposition status of the air ...
Yuanhao Shi, Jie Wen, Fangshu Cui, Jingcheng Wang   +3 more
doaj   +1 more source

A novel soot concentration field estimator applied to sooting ethylene/air laminar flames

Engineering Applications of Computational Fluid Mechanics, 2019
Soot formation modeling, when incorporated into computational fluid dynamics of industrial devices, can be numerically prohibitive. Nonetheless, there remains a significant push to predict soot formation, so as to aid in environmentally sustainable ...
L. Zimmer, S. Kostic, S. B. Dworkin
doaj   +1 more source

Detailed Kinetics Modeling Of Soot Formation

XXXIX Meeting of the Italian Section of the Combustion Institute, 2016
The present work addresses the study of the detailed kinetic modeling of soot formation process, with the aim to compare different number of classes of lumped pseudo-species.
Pejpichestakul, Warumporn, Faravelli, Tiziano, Frassoldati, Alessio   +2 more
openaire   +1 more source

Importance of composition and hygroscopicity of BC particles to the effect of BC mitigation on cloud properties: Application to California conditions [PDF]

, 2012
Black carbon (BC) has many effects on climate including the direct effect on atmospheric absorption, indirect and semi-direct effects on clouds, snow effects, and others.
Adams, Peter, Bahadur, Ranjit, Jacobson, Mark Z., Nenes, Athanasios, Prather, Kimberly, Russell, Lynn M., Seinfeld, John H.   +6 more
core   +1 more source

Clouds Over Soot Evaporation: Errors in Modeling Laser-Induced Incandescence of Soot

Journal of Heat Transfer, 2000
The ambiguity and incorrect treatment of the evaporation term among some LII models in the literature are discussed. This study does not suggest that the correct formulation presented for the evaporation model is adequate, or that it reflects the soot evaporation process under intense evaporation. The emphasis is that the current evaporation model must
Smallwood, Gregory, Snelling, David, Liu, Fengshan, Gulder, Omar L.   +3 more
openaire   +2 more sources

A Mechanochemical Kolbe–Schmitt Reaction: Catechol Carboxylation Provides Building Blocks for Renewable Plasticizers

Angewandte Chemie, EarlyView.
A mechanochemical Kolbe–Schmitt reaction of disodium catecholate enables the synthesis of mono‐ and dicarboxylated catechols at low temperature and CO2 pressure. Directly derivatizing the resulting carboxylic acid and phenolic moieties in the obtained mixture provides plasticizer blends with efficiencies competitive to commercial benchmarks.
Dries De Vos, Victoria S. Pfennig, Arno Goddé, Robby Vroemans, Tobias Krückel, Nicole Marcinkowska, Ettore Bartalucci, Thomas Wiegand, Carsten Bolm, Bert U. W. Maes   +9 more
wiley   +2 more sources