The continuing maturation of metal laser-sintering technology (direct metal laser sintering (DMLS)) presents the opportunity to derisk the engine design process by experimentally down-selecting high-pressure nozzle guide vane (HPNGV) cooling designs using laboratory tests of laser-sintered—instead of cast—parts to assess thermal performance. Such tests could be seen as supplementary to thermal-paint test engines, which are used during certification to validate cooling system designs. In this paper, we compare conventionally cast and laser-sintered titanium alloy parts in back-to-back experimental tests at engine-representative conditions over a range of coolant mass flow rates. Tests were performed in the University of Oxford Annular Sector Heat Transfer Facility. The thermal performance of the cast and laser-sintered parts—measured using new infrared processing techniques—is shown to be very similar, demonstrating the utility of laser-sintered parts for preliminary engine thermal assessments. We conclude that the methods reported in this paper are sufficiently mature to make assessments which could influence engine development programs.
Skip Nav Destination
Article navigation
April 2017
Research-Article
Laboratory Infrared Thermal Assessment of Laser-Sintered High-Pressure Nozzle Guide Vanes to Derisk Engine Design Programs
Benjamin Kirollos,
Benjamin Kirollos
Osney Thermofluids Laboratory,
Department of Engineering Science,
University of Oxford,
Oxford OX2 0ES, UK
e-mail: ben.kirollos@eng.ox.ac.uk
Department of Engineering Science,
University of Oxford,
Oxford OX2 0ES, UK
e-mail: ben.kirollos@eng.ox.ac.uk
Search for other works by this author on:
Thomas Povey
Thomas Povey
Osney Thermofluids Laboratory,
Department of Engineering Science,
University of Oxford,
Oxford OX2 0ES, UK
e-mail: thomas.povey@eng.ox.ac.uk
Department of Engineering Science,
University of Oxford,
Oxford OX2 0ES, UK
e-mail: thomas.povey@eng.ox.ac.uk
Search for other works by this author on:
Benjamin Kirollos
Osney Thermofluids Laboratory,
Department of Engineering Science,
University of Oxford,
Oxford OX2 0ES, UK
e-mail: ben.kirollos@eng.ox.ac.uk
Department of Engineering Science,
University of Oxford,
Oxford OX2 0ES, UK
e-mail: ben.kirollos@eng.ox.ac.uk
Thomas Povey
Osney Thermofluids Laboratory,
Department of Engineering Science,
University of Oxford,
Oxford OX2 0ES, UK
e-mail: thomas.povey@eng.ox.ac.uk
Department of Engineering Science,
University of Oxford,
Oxford OX2 0ES, UK
e-mail: thomas.povey@eng.ox.ac.uk
1Corresponding author.
Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the JOURNAL OF TURBOMACHINERY. Manuscript received July 26, 2016; final manuscript received August 26, 2016; published online January 18, 2017. Editor: Kenneth Hall.
J. Turbomach. Apr 2017, 139(4): 041009 (12 pages)
Published Online: January 18, 2017
Article history
Received:
July 26, 2016
Revised:
August 26, 2016
Citation
Kirollos, B., and Povey, T. (January 18, 2017). "Laboratory Infrared Thermal Assessment of Laser-Sintered High-Pressure Nozzle Guide Vanes to Derisk Engine Design Programs." ASME. J. Turbomach. April 2017; 139(4): 041009. https://doi.org/10.1115/1.4035074
Download citation file:
Get Email Alerts
Evaluating Thin-Film Thermocouple Performance on Additively Manufactured Turbine Airfoils
J. Turbomach (July 2025)
Thermohydraulic Performance and Flow Structures of Diamond Pyramid Arrays
J. Turbomach (July 2025)
Related Articles
Investigation of Unsteady Flow Phenomena in First Vane Caused by Combustor Flow With Swirl
J. Turbomach (April,2017)
Scaling of Turbine Metal Temperatures in Cooled Compressible Flows—Experimental Demonstration of a New Theory
J. Turbomach (August,2017)
Erratum: “Film Cooling Extraction Effects on the Aero-Thermal Characteristics of Rib Roughened Cooling Channel Flow” [ASME J. Turbomach., 135(2), p. 021016; DOI: 10.1115/1.4007501 ]
J. Turbomach (August,2018)
Effects of Coolant Density, Specific Heat Capacity, and Biot Number on Turbine Vane Cooling Effectiveness
J. Turbomach (November,2017)
Related Proceedings Papers
Related Chapters
Outlook
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Control and Operational Performance
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Thermodynamic Performance
Closed-Cycle Gas Turbines: Operating Experience and Future Potential