Frontiers in Heat and Mass Transfer, Volume (2), No (2), Year (2011-5) , Pages (1-9)

Title : ( NUMERICAL SIMULATION OF DROPLET IMPACT AND SOLIDIFICATION INCLUDING THERMAL SHRINKAGE IN A THERMAL SPRAY PROCESS )

Authors: Seyyed Sina Alavi , Mohammad Passandideh Fard ,

Citation: BibTeX | EndNote

In this paper, a numerical study is performed to investigate the effects of thermal shrinkage on the deposition of molten particles on a substrate in a thermal spray process using the Volume-of-Fluid (VOF) method. Thermal shrinkage is a phenomenon caused by the variation of density during cooling and solidification of a molten metal. The Navier-Stokes equations along with the energy equation including phase change are solved using a 2D/axisymmetric mesh. The VOF method is used to track the free surface of molten particles, and an enthalpy-porosity formulation is used to model solidification. For the normal impact of tin particles in the order of 2 mm in diameter and 1 m/s in impact velocity, the final splat had a single cavity inside due to shrinkage. For cases with the scales of a typical thermal spray process, the effect of shrinkage appeared as a reduction in the droplet splashing on the substrate.

Keywords

, Thermal shrinkage, Thermal spray coating, VOF method, Solidification, Molten metal
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@article{paperid:1022910,
author = {Alavi, Seyyed Sina and Passandideh Fard, Mohammad},
title = {NUMERICAL SIMULATION OF DROPLET IMPACT AND SOLIDIFICATION INCLUDING THERMAL SHRINKAGE IN A THERMAL SPRAY PROCESS},
journal = {Frontiers in Heat and Mass Transfer},
year = {2011},
volume = {2},
number = {2},
month = {May},
issn = {2151-8629},
pages = {1--9},
numpages = {8},
keywords = {Thermal shrinkage; Thermal spray coating; VOF method; Solidification; Molten metal droplets},
}

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%0 Journal Article
%T NUMERICAL SIMULATION OF DROPLET IMPACT AND SOLIDIFICATION INCLUDING THERMAL SHRINKAGE IN A THERMAL SPRAY PROCESS
%A Alavi, Seyyed Sina
%A Passandideh Fard, Mohammad
%J Frontiers in Heat and Mass Transfer
%@ 2151-8629
%D 2011

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