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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, JavadBussmann, 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: MasterDepartment of Materials Science & Engineering - Master theses

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