ライブラリ登録: Guest
Begell Digital Portal Begellデジタルライブラリー 電子書籍 ジャーナル 参考文献と会報 リサーチ集
Atomization and Sprays
インパクトファクター: 1.737 5年インパクトファクター: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 2.2

ISSN 印刷: 1044-5110
ISSN オンライン: 1936-2684

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

Atomization and Sprays

DOI: 10.1615/AtomizSpr.2012004487
pages 933-948

SPRAY PROCESS MODELING IN METAL MATRIX COMPOSITE POWDER PRODUCTION

Xinggang Li
Department of Particles and Process Engineering, University of Bremen; Foundation Institute of Materials Science, Badgasteiner Str. 3, D-28359 Bremen, Germany
L. Heisteruber
Department of Particles and Process Engineering, University of Bremen; Foundation Institute of Materials Science, Badgasteiner Str. 3, D-28359 Bremen, Germany
Lydia Achelis
Department of Particles and Process Engineering, University of Bremen; Foundation Institute of Materials Science, Badgasteiner Str. 3, D-28359 Bremen, Germany
V. Uhlenwinkel
Department of Particles and Process Engineering, University of Bremen; Foundation Institute of Materials Science, Badgasteiner Str. 3, D-28359 Bremen, Germany
Udo Fritsching
Department of Particles and Process Engineering, University of Bremen; Foundation Institute of Materials Science, Badgasteiner Str. 3, D-28359 Bremen, Germany

要約

Swirl pressure gas atomization is used to produce metal matrix composite powders in a spray process. Here, solid particulate material (typically ceramic particles) is co-injected together with the atomization gas to be impacted on the liquid metal lamellas/droplets in flight. Thus, a three-phase spray flow is formed. The spray process is simulated based on a multi-scale model. On the macro-scale, an Eulerian-Lagrangian-Lagrangian model is employed. According to the simulation results, high gas velocity (above 100 m/s) and particle number concentration (in the order of 102/mm3) can be maintained in the secondary atomization region, e.g., 30−40 mm below the nozzle, where the metallic droplets and ceramic particles have been mixed fully. Numerical results from the macro simulation provide a background and initial conditions for the meso-scale simulation. On the meso-scale, the particle-laden gas flow around a metallic droplet is investigated based on an Eulerian-Lagrangian model. The particle-droplet impact efficiency, found related to relative Stokes number (St) and Reynolds number (Re), should be always above 90% for a spherical droplet of 125 μm diameter along its flight path, due to high St and Re (both in the order of 102−103). The interaction between the metallic droplets and the ceramic particles is described quantitatively based on a particle-droplet (spherical) impact model. However, the particle incorporation rate into the metal droplets is overpredicted in comparison to experimental findings, probably due to neglecting particulate reinforcement penetration efficiency and the influences from the metallic lamella/droplet deformation and break-up.


Articles with similar content:

Effect of droplet size and breakup on spray shape: a priori study using Large-Eddy Simulation
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 2009, issue
Harri Hillamo, Martti Larmi, M. Nuutinen, Ossi Kaario, Laszlo Fuchs, Ville Vuorinen
PURIFICATION AND HYDROGENATION OF METALLURGICAL SILICON POWDER BY RF THERMAL PLASMA. CHARACTERIZATION OF THE DEPOSIT.
Progress in Plasma Processing of Materials, 2003, Vol.0, 2003, issue
D. Ballutaud, Jacques Amouroux, M. Nickravech, Daniel Morvan, E. Francke, M. Benmansour
PHYSICO-CHEMICAL CONDITIONS STUDY FOR DEPOSITION OF SILICON LAYER ON A SUBSTRATE BY RF PLASMA
Progress in Plasma Processing of Materials, 2001, Vol.0, 2001, issue
Jacques Amouroux, F. Bourg, F. Krayem, Daniel Morvan, E. Francke, M. Benmansour
INFLUENCE OF ATOMIZATION AND SPRAY PARAMETERS ON THE FLAME SPRAY PROCESS FOR NANOPARTICLE PRODUCTION
Atomization and Sprays, Vol.24, 2014, issue 6
C. D. Rosebrock, Udo Fritsching, L. Madler, Dirceu Noriler, H. F. Meier
INFLUENCE OF POWDER SIZE DISTRIBUTIONS ON MICROSTRUCTURAL FEATURES OF FINELY STRUCTURED PLASMA SPRAYED COATINGS
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, Vol.8, 2004, issue 3
J. F. Coudert, J. Fazilleau, C. Delbos, C. Bonhomme, Pierre Fauchais, V. Rat