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Spray Impingement Fundamentals

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Metal Sprays and Spray Deposition

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Abstract

Chapter 5 will review the dynamics of both single droplets and sprays of molten metals landing on solid surfaces. Droplets landing on a solid substrate flatten out and solidify; the splats may either be disc shaped or fragmented, depending on impact conditions. Multiple droplets impacting on a surface fuse with each other to form a solid layer. The dynamics of single droplet impact and solidification are discussed. The thermal contact resistance between the droplet and substrate on the solidification rate is important in determining the solidification rate and the splat shape. An overview is given of numerical models to simulate droplet impact and solidification. The impact and coalescence of multiple droplets in a spray to form a solid layer is described. Monte Carlo and smoothed particle hydrodynamics methods can be used to simulate droplet impact and coalescence in a spray and predict properties such as coating thickness and porosity.

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Authors and Affiliations

  1. Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON, Canada

    Sanjeev Chandra & Javad Mostaghimi

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  1. Sanjeev Chandra
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  2. Javad Mostaghimi
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Correspondence to Sanjeev Chandra .

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Editors and Affiliations

  1. Advanced Materials and Processing Lab, University of Alberta, Edmonton, Alberta, Canada

    Hani Henein

  2. Foundation Institute of Materials Science, University of Bremen, Bremen, Germany

    Volker Uhlenwinkel

  3. Foundation Institute of Materials Science, University of Bremen, Bremen, Germany

    Udo Fritsching

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Chandra, S., Mostaghimi, J. (2017). Spray Impingement Fundamentals. In: Henein, H., Uhlenwinkel, V., Fritsching, U. (eds) Metal Sprays and Spray Deposition. Springer, Cham. https://doi.org/10.1007/978-3-319-52689-8_5

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