Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
Atomization and Sprays
Facteur d'impact: 1.737 Facteur d'impact sur 5 ans: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 2.2

ISSN Imprimer: 1044-5110
ISSN En ligne: 1936-2684

Volumes:
Volume 30, 2020 Volume 29, 2019 Volume 28, 2018 Volume 27, 2017 Volume 26, 2016 Volume 25, 2015 Volume 24, 2014 Volume 23, 2013 Volume 22, 2012 Volume 21, 2011 Volume 20, 2010 Volume 19, 2009 Volume 18, 2008 Volume 17, 2007 Volume 16, 2006 Volume 15, 2005 Volume 14, 2004 Volume 13, 2003 Volume 12, 2002 Volume 11, 2001 Volume 10, 2000 Volume 9, 1999 Volume 8, 1998 Volume 7, 1997 Volume 6, 1996 Volume 5, 1995 Volume 4, 1994 Volume 3, 1993 Volume 2, 1992 Volume 1, 1991

Atomization and Sprays

DOI: 10.1615/AtomizSpr.2014008559
pages 495-524

INFLUENCE OF ATOMIZATION AND SPRAY PARAMETERS ON THE FLAME SPRAY PROCESS FOR NANOPARTICLE PRODUCTION

Dirceu Noriler
Chemical Engineering Department, University of Blumenau, Blumenau, Brazil
C. D. Rosebrock
IWT, University of Bremen, Bremen, Germany
L. Madler
IWT, University of Bremen, Bremen, Germany
H. F. Meier
Department of Chemical Engineering, Regional University of Blumenau, Rua Sao Paulo 3250, 89030-000 Blumenau SC
Udo Fritsching
Department of Particles and Process Engineering, University of Bremen; Foundation Institute of Materials Science, Badgasteiner Str. 3, D-28359 Bremen, Germany

RÉSUMÉ

Within the Flame Spray Pyrolysis (FSP) process for nanoparticle production, the effects of the liquid atomization process and the spray properties on the spray flame structure were studied by means of experiments and numerical simulations. The influence of precursor concentration variations on the spray droplet size distribution was studied for two different FSP nozzles. The resulting spray has been characterized in terms of drop sizes and velocities by means of Laser Diffraction and Particle Image Velocimetry. A mathematical model was carried out considering two-way coupling between the gas phase and the droplets. For the combustion model, the eddy dissipation concept model was employed, taking into account the effects of the vaporization of the droplets, chemical reaction mechanisms, and the chemistry-turbulence interaction. Experimental and numerical results are compared to validate the model and to study the potential influence of significant spray parameters on the FSP process. With increasing fuel/precursor viscosity from 0.55 × 10−3 Pa.s to 3.72 × 10−3 Pa.s an increase of 48% in the Sauter Mean Diameter (SMD) has been found. Furthermore, a bimodal droplet size distribution was found for the larger fuel/precursor viscosities. Large droplets may directly affect the flame structure and morphology while leaving the flame without complete evaporation and subsequent reaction thus influencing the resulting particle size distribution.


Articles with similar content:

SPRAY PROCESS MODELING IN METAL MATRIX COMPOSITE POWDER PRODUCTION
Atomization and Sprays, Vol.21, 2011, issue 11
V. Uhlenwinkel, Udo Fritsching, Lydia Achelis, L. Heisteruber, Xinggang Li
SIZE AND VELOCITY MEASUREMENTS IN SPRAYS AND PARTICLE-PRODUCING FLAME SPRAYS
Atomization and Sprays, Vol.18, 2008, issue 7
Mikko Aromaa, Helmi Keskinen, Jyrki M. Makela, Martin C. Heine
GROUP COMBUSTION BEHAVIOR OF DROPLETS IN A PREMIXED-SPRAY FLAME
Atomization and Sprays, Vol.7, 1997, issue 2
Yong Dae Cho, Kazuyoshi Nakabe, Yukio Mizutani, Shohji Tsushima, Masashi Katsuki, Fumiteru Akamatsu
THE PREMIXED LAMINAR FLAMES IN THE BORON DUST CLOUDS
International Journal of Energetic Materials and Chemical Propulsion, Vol.2, 1993, issue 1-6
N. D. Ageyev, V. G. Shevchuk, Yuriy L. Shoshin, S. V. Goroshin
Modeling and Simulations of Fine Water Spray in Buoyant Turbulent Diffusion Flame
Heat Transfer Research, Vol.39, 2008, issue 2
A. L. Lipjainen, Alexander Yu. Snegirev