Numerical study on the effect of nozzle dimension on particle distribution in cold spraying

The height of rectangular nozzle's exit, throat and powder injector is changed systematically while the nozzle expansion ratio remains constant in order to study their effects on the distribution and velocity of magnesium (Mg) particles using three-dimensional models of cold spraying system. Th...

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Bibliographic Details
Published inSurface & coatings technology Vol. 220; pp. 107 - 111
Main Authors Suo, X.K., Liu, T.K., Li, W.Y., Suo, Q.L., Planche, M.P., Liao, H.L.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Amsterdam Elsevier B.V 15.04.2013
Elsevier
Subjects
CFD
Cold spraying
Cross-disciplinary physics: materials science; rheology
Exact sciences and technology
Materials science
Particle distribution
Particle velocity
Physics
Surface treatments
CFD
Cold spraying
Particle distribution
Particle velocity
Fluid dynamics
Dimensions
Surface treatments
Calculus
Velocity
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Summary:The height of rectangular nozzle's exit, throat and powder injector is changed systematically while the nozzle expansion ratio remains constant in order to study their effects on the distribution and velocity of magnesium (Mg) particles using three-dimensional models of cold spraying system. The effect of particle size on the particle distribution is also studied. It is found that the particle distribution is mainly influenced by the turbulent kinetic energy of the carrier gas flow at the nozzle exit. Changing the height of the exit or throat can control the particle distribution. The height of powder injector only influences the particle velocity.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2012.09.029