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Exploring Surface Roughness Effects on Spray Performance in Metal Additive Manufactured Fuel Injectors for Gas Turbine Applications

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Title: Exploring Surface Roughness Effects on Spray Performance in Metal Additive Manufactured Fuel Injectors for Gas Turbine Applications
Authors: Tuneskog, Erika, 1995, Nogenmyr, Karl Johan, Moëll, Daniel, 1985, Gullberg, Marcus, 1985, Nyborg, Lars, 1958
Source: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy. 72:1233-1239
Subject Terms: Metal Binder Jetting, Fuel Injectors, Gas Turbine, Surface Roughness, Powder Bed Fusion-Laser Beam
Description: Metal additive manufacturing (AM) enables the design of complex fuel injectors for gas turbine applications. Despite its advantages, AM injectors display rougher surfaces than conventional counterparts, adversely affecting spray performance through increased droplet size and the promotion of non-circumferential sprays. Design enhancements are believed to mitigate the surface roughness limitations, thereby improving the overall performance of the injector. However, surface roughness is dependent on the AM method chosen to produce the injectors. This study provides a baseline for the correlation between surface roughness and spray performance for plain orifice fuel injectors manufactured in 316L stainless steel by Metal Binder Jetting (MBJ) and Powder Bed Fusion – Laser Beam (PBF–LB). Surface roughness and manufacturing challenges, like shrinkage, significantly impact spray characteristics in smaller channel PBF-LB and MBJ injectors, compromising their spray quality and necessitating additional post-processing steps. Larger channel injectors perform better in maintaining circumferential spray uniformity and directional stability.
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Access URL: https://research.chalmers.se/publication/545813
https://research.chalmers.se/publication/543683
https://doi.org/10.2497/jjspm.16C-T11-09
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Exploring Surface Roughness Effects on Spray Performance in Metal Additive Manufactured Fuel Injectors for Gas Turbine Applications
– Name: Author
  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Tuneskog%2C+Erika%22">Tuneskog, Erika</searchLink>, 1995<br /><searchLink fieldCode="AR" term="%22Nogenmyr%2C+Karl+Johan%22">Nogenmyr, Karl Johan</searchLink><br /><searchLink fieldCode="AR" term="%22Moëll%2C+Daniel%22">Moëll, Daniel</searchLink>, 1985<br /><searchLink fieldCode="AR" term="%22Gullberg%2C+Marcus%22">Gullberg, Marcus</searchLink>, 1985<br /><searchLink fieldCode="AR" term="%22Nyborg%2C+Lars%22">Nyborg, Lars</searchLink>, 1958
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <i>Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy</i>. 72:1233-1239
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Metal+Binder+Jetting%22">Metal Binder Jetting</searchLink><br /><searchLink fieldCode="DE" term="%22Fuel+Injectors%22">Fuel Injectors</searchLink><br /><searchLink fieldCode="DE" term="%22Gas+Turbine%22">Gas Turbine</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+Roughness%22">Surface Roughness</searchLink><br /><searchLink fieldCode="DE" term="%22Powder+Bed+Fusion-Laser+Beam%22">Powder Bed Fusion-Laser Beam</searchLink>
– Name: Abstract
  Label: Description
  Group: Ab
  Data: Metal additive manufacturing (AM) enables the design of complex fuel injectors for gas turbine applications. Despite its advantages, AM injectors display rougher surfaces than conventional counterparts, adversely affecting spray performance through increased droplet size and the promotion of non-circumferential sprays. Design enhancements are believed to mitigate the surface roughness limitations, thereby improving the overall performance of the injector. However, surface roughness is dependent on the AM method chosen to produce the injectors. This study provides a baseline for the correlation between surface roughness and spray performance for plain orifice fuel injectors manufactured in 316L stainless steel by Metal Binder Jetting (MBJ) and Powder Bed Fusion – Laser Beam (PBF–LB). Surface roughness and manufacturing challenges, like shrinkage, significantly impact spray characteristics in smaller channel PBF-LB and MBJ injectors, compromising their spray quality and necessitating additional post-processing steps. Larger channel injectors perform better in maintaining circumferential spray uniformity and directional stability.
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  Data: electronic
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        Value: 10.2497/jjspm.16C-T11-09
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      – Text: English
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        PageCount: 7
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      – SubjectFull: Metal Binder Jetting
        Type: general
      – SubjectFull: Fuel Injectors
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      – SubjectFull: Gas Turbine
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      – SubjectFull: Surface Roughness
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      – TitleFull: Exploring Surface Roughness Effects on Spray Performance in Metal Additive Manufactured Fuel Injectors for Gas Turbine Applications
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            NameFull: Tuneskog, Erika
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              M: 01
              Type: published
              Y: 2025
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            – TitleFull: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
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