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OpenFOAM Modeling of Particle Heating and Acceleration in Cold Spraying

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Abstract

In cold spraying, a powder material is accelerated and heated in the gas flow of a supersonic nozzle to velocities and temperatures that are sufficient to obtain cohesion of the particles to a substrate. The deposition efficiency of the particles is significantly determined by their velocity and temperature. Particle velocity correlates with the amount of kinetic energy that is converted to plastic deformation and thermal heating. The initial particle temperature significantly influences the mechanical properties of the particle. Velocity and temperature of the particles have nonlinear dependence on the pressure and temperature of the gas at the nozzle entrance. In this contribution, a simulation model based on the reactingParcelFoam solver of OpenFOAM is presented and applied for an analysis of particle velocity and temperature in the cold spray nozzle. The model combines a compressible description of the gas flow in the nozzle with a Lagrangian particle tracking. The predictions of the simulation model are verified based on an analytical description of the gas flow, the particle acceleration and heating in the nozzle. Based on experimental data, the drag model according to Plessis and Masliyah is identified to be best suited for OpenFOAM modeling particle heating and acceleration in cold spraying.

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Authors and Affiliations

  1. Plansee SE, Metallwerk-Plansee-Straße 71, 6600, Reutte, Austria

    K.-H. Leitz, M. O’Sullivan, A. Plankensteiner, H. Kestler & L. S. Sigl

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  1. K.-H. Leitz
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  2. M. O’Sullivan
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  3. A. Plankensteiner
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  4. H. Kestler
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  5. L. S. Sigl
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Correspondence to K.-H. Leitz.

Additional information

This article is an invited paper selected from presentations at the 2017 International Thermal Spray Conference, held June 7-9, 2017, in Düsseldorf, Germany, that has been expanded from the original presentation.

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Leitz, KH., O’Sullivan, M., Plankensteiner, A. et al. OpenFOAM Modeling of Particle Heating and Acceleration in Cold Spraying. J Therm Spray Tech 27, 135–144 (2018). https://doi.org/10.1007/s11666-017-0644-4

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  • DOI: https://doi.org/10.1007/s11666-017-0644-4

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