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Efficient Simulation of Nonlinear Heat Transfer during Thermal Spraying of Complex Workpieces

Berthelsen, Berthelsen; Wiederkehr, Thomas; Denzer, Ralf LU ; Menzel, Andreas LU and Müller, Heinrich (2014) In World Journal of Mechanics 4(9). p.289-301
Abstract
The quality of coatings, produced by thermal spraying processes, considerably decreases with the occurrence of higher residual stresses, which are especially pronounced for complex workpiece geometries. To understand the occurring effects and to aid in the planning of coating processes, simulations of the highly transient energy flux of the HVOF spray gun into the substrate are of great value. In this article, a software framework for the simulation of nonlinear heat transfer during (HVOF) thermal spraying is presented. One part of this framework employs an efficient GPU-based simulation algorithm to compute the time-dependent input boundary conditions for a spray gun that moves along a complex workpiece of arbitrary shape. The other part... (More)
The quality of coatings, produced by thermal spraying processes, considerably decreases with the occurrence of higher residual stresses, which are especially pronounced for complex workpiece geometries. To understand the occurring effects and to aid in the planning of coating processes, simulations of the highly transient energy flux of the HVOF spray gun into the substrate are of great value. In this article, a software framework for the simulation of nonlinear heat transfer during (HVOF) thermal spraying is presented. One part of this framework employs an efficient GPU-based simulation algorithm to compute the time-dependent input boundary conditions for a spray gun that moves along a complex workpiece of arbitrary shape. The other part employs a finite-element model for a rigid heat conductor adhering to the computed boundary conditions. The model is derived from the fundamental equations of continuum thermodynamics where nonlinear temperature-depending heat conduction is assumed. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Nonlinear Heat Conduction, Continuum Thermodynamics, GPU Computing
in
World Journal of Mechanics
volume
4
issue
9
pages
289 - 301
publisher
Scientific Research
ISSN
2160-0503
DOI
10.4236/wjm.2014.49029
language
English
LU publication?
yes
id
5651ac15-f8b6-4d31-894c-823cd76f3052 (old id 4917930)
date added to LUP
2015-01-08 11:20:03
date last changed
2016-04-15 14:38:20
@article{5651ac15-f8b6-4d31-894c-823cd76f3052,
  abstract     = {The quality of coatings, produced by thermal spraying processes, considerably decreases with the occurrence of higher residual stresses, which are especially pronounced for complex workpiece geometries. To understand the occurring effects and to aid in the planning of coating processes, simulations of the highly transient energy flux of the HVOF spray gun into the substrate are of great value. In this article, a software framework for the simulation of nonlinear heat transfer during (HVOF) thermal spraying is presented. One part of this framework employs an efficient GPU-based simulation algorithm to compute the time-dependent input boundary conditions for a spray gun that moves along a complex workpiece of arbitrary shape. The other part employs a finite-element model for a rigid heat conductor adhering to the computed boundary conditions. The model is derived from the fundamental equations of continuum thermodynamics where nonlinear temperature-depending heat conduction is assumed.},
  author       = {Berthelsen, Berthelsen and Wiederkehr, Thomas and Denzer, Ralf and Menzel, Andreas and Müller, Heinrich},
  issn         = {2160-0503},
  keyword      = {Nonlinear Heat Conduction,Continuum Thermodynamics,GPU Computing},
  language     = {eng},
  number       = {9},
  pages        = {289--301},
  publisher    = {Scientific Research},
  series       = {World Journal of Mechanics},
  title        = {Efficient Simulation of Nonlinear Heat Transfer during Thermal Spraying of Complex Workpieces},
  url          = {http://dx.doi.org/10.4236/wjm.2014.49029},
  volume       = {4},
  year         = {2014},
}