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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/17451

Title: 2 2D Model of Semi-molten Drop Impact for Thermal Spray Application
Authors: Wu, Tommy
Advisor: Mostaghimi, Javad
Bussmann, Markus
Department: Materials Science and Engineering
Keywords: thermal spray; model; semi-molten particle; IB and VOF method
Issue Date: 15-Jul-2009
Abstract: In thermal spraying, semi-molten (or partially-melted) particles are likely to form when the sprayed particles are insufficiently heated, or when a composite material is deposited. The present 2D model serves to begin to assess the spreading behavior of a semi-molten particle when impacting a solid substrate. An Immersed-Boundary (IB) scheme was implemented in an axisymmetric fluid model to simulate fluid flow in the presence of a solid core. The IB method calculates a forcing term, which is added to the momentum equation, to enforce the no-slip boundary condition at the core surface. Results are presented for the impact of a semi-molten tin droplet of radius R for a wide range of solid core radii r, varying the drop size ratio r/R, and the impact velocity Uo.
URI: http://hdl.handle.net/1807/17451
Appears in Collections:Master
Department of Materials Science & Engineering - Master theses

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