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dc.contributor.authorJofre Cruanyes, Lluís
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Mecànica de Fluids
dc.identifier.citationJofre, L. Uncertainty quantification in large eddy simulations of a rich-dome aviation gas turbine. A: Turbomachinery Technical Conference & Exposition. "Proceedings of ASME Turbo Expo 2017: Turbomachinery Technical Conference & Exposition". 2017, p. 1-11.
dc.description.abstractIn this work, a rich-dome aviation combustor operating over a range of high-power conditions is investigated using multiple Large Eddy Simulations (LES). The LES flow solutions are obtained with CharLES, a massively-parallel framework for compressible, reacting flows in complex geometries. The CharLES solver constructs a body-conforming mesh from the 3D Voronoi diagram of a set of regularly distributed seed points within the computational domain. The computational domain spans from the compressor exit plane to the combustor exit plane and includes the passages around the combustor liners. A baseline solution is first obtained at nominal conditions using a reference grid and validated using non-dimensional exit profile. Non-intrusive Uncertainty Quantification (UQ) is then employed to characterize the uncertainties on a few key combustor metrics. It is found that the overall variability at the exit plane is actually larger than the input uncertainty. This highlights the non-linear coupling between the flow and the reacting processes inside the combustor. Areas of high temperature variability are highlighted, especially downstream of the dilution holes. Finally, it is found that uncertainty in fuel flowrate has a greater impact on outlet quantities whereas uncertainty in air inlet temperature has a greater impact on liner quantities.
dc.format.extent11 p.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Física::Física de fluids
dc.subject.lcshFluid dynamics
dc.subject.otherDomes (Structural elements)
dc.subject.otherGas turbines
dc.subject.otherLarge eddy simulation
dc.subject.otherUncertainty quantification
dc.subject.otherCombustion chambers
dc.subject.otherFlow (Dynamics)
dc.subject.otherHigh temperature
dc.titleUncertainty quantification in large eddy simulations of a rich-dome aviation gas turbine
dc.typeConference report
dc.subject.lemacTurbines de gas
dc.subject.lemacDinàmica de fluids
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
local.citation.authorJofre, L.
local.citation.contributorTurbomachinery Technical Conference & Exposition
local.citation.publicationNameProceedings of ASME Turbo Expo 2017: Turbomachinery Technical Conference & Exposition

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Attribution-NonCommercial-NoDerivs 3.0 Spain
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