Metallurgical and Materials Transactions B

, Volume 46, Issue 4, pp 1990–2004 | Cite as

Numerical and Experimental Investigations of the Effect of Melt Delivery Nozzle Design on the Open- to Closed-Wake Transition in Closed-Coupled Gas Atomization

  • Shahed Motaman
  • Andrew M. Mullis
  • Robert F. Cochrane
  • Duncan J. Borman
Article
First Online:

Abstract

The single-phase gas-flow behavior of a closed-coupled gas atomization was investigated with four different melt nozzle tip designs with two types of gas die. Particular attention was paid to the open- to closed-wake transition. Experimental Schlieren imaging and numerical modeling techniques were employed, with good agreement between the two being found in relation to the wake closure pressure. It was found that the melt nozzle tip design had a significant impact on the WCP, as did the type of die used, with a convergent–divergent gas die giving significantly high WCPs.

Keywords

Computational Fluid Dynamics Recirculation Zone Computational Fluid Dynamics Simulation Mach Disk Schlieren Imaging 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2015

Authors and Affiliations

  • Shahed Motaman
    • 1
    • 3
  • Andrew M. Mullis
    • 1
  • Robert F. Cochrane
    • 1
  • Duncan J. Borman
    • 2
  1. 1.Institute for Materials ResearchUniversity of LeedsLeedsUK
  2. 2.Engineering Mathematics and Modelling, School of Civil EngineeringUniversity of LeedsLeedsUK
  3. 3.Institute for Innovation in Sustainable EngineeringUniversity of DerbyDerbyUK

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