CFD Evaluation of a 3rd Generation LDI Combustor

Ajmani, Kumud; Mongia, Hukam; Lee, Phil

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NASA NTRS · 20170007985

CFD Evaluation of a 3rd Generation LDI Combustor

Ajmani, Kumud·Mongia, Hukam·Lee, Phil

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Abstract

An effort was undertaken to perform CFD analysis of fluid flow in Lean-Direct Injection (LDI) combustors with axial swirl-venturi elements for next-generation LDI-3 combustor design. The National Combustion Code (NCC) was used to perform non-reacting and two-phase reacting flow computations for a nineteen-element injector array arranged in a three-module, 7-5-7 element configuration. All computations were performed with a consistent approach of mesh-optimization, spray-modeling, ignition and kinetics-modeling with the NCC. Computational predictions of the aerodynamics of the injector were used to arrive at an optimal injector design that meets effective area and fuel-air mixing criteria. LDI-3 emissions (EINOx, EICO and UHC) were compared with the previous generation LDI-2 combustor experimental data at representative engine cycle conditions.

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BibTeX RIS

Ajmani, Kumud, Mongia, Hukam, Lee, Phil. 2017-07-10. CFD Evaluation of a 3rd Generation LDI Combustor. https://ntrs.nasa.gov/citations/20170007985

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