Updates to Simulation of a Single-Element Lean-Direct Injection Combustor Using Arbitrary Polyhedral Meshes

Wey, Thomas; Liu, Nan-Suey

doi:10.2514/6.2015-0099

Cited by 4 publications

(3 citation statements)

References 3 publications

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“…It is a state-of-the-art code equipped with a comprehensive combustion model, a turbulence model (cubic non-linear k − model with the wall function), finite rate chemistry with turbulence chemistry interaction models, PDF transport model, 13 Eddy-Breakup Model (EBU) 14 and Linear-Eddy Model (LEM), 15,16 and spray model (Lagrangian liquid phase model). 17,18 Many previous papers and presentations (e.g., 4,[19][20][21][22][23][24] have shown that OpenNCC (as well as NCC) has facilitated the combustion CFD in the development/design of the combustion technology at NASA-GRC. For the numerical and mesh capability, OpenNCC is designed for unstructured grids (i.e., any mix of three-dimensional elements: hexahedral and tetrahedral mesh), and massively parallel computing (with almost perfectly linear scalability is achieved for non-spray cases up to 4000 central processing units).…”

Section: A Open National Combustion Codementioning

confidence: 99%

Computational Study of Combustor–Turbine Interactions

Miki

Moder

Liou

2018

Journal of Propulsion and Power

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The Open National Combustion Code (OpenNCC) is applied to the simulation of a realistic combustor configuration (Energy Efficient Engine (E 3)) in order to investigate the unsteady flow fields inside the combustor and around the first stage stator of a high pressure turbine (HPT). We consider one-twelfth (24 degrees) of the full annular E 3 combustor with three different geometries of the combustor exit: one without the vane, and two others with the vane set at different relative positions in relation to the fuel nozzle (clocking). Although it is common to take the exit flow profiles obtained by separately simulating the combustor and then feed it as the inflow profile when modeling the HPT, our studies show that the unsteady flow fields are influenced by the presence of the vane as well as clocking. More importantly, the characteristics (e.g., distribution and strength) of the high temperature spots (i.e., hot-streaks) appearing on the vane significantly alters. This indicates the importance of simultaneously modeling both the combustor and the HPT to understand the mechanics of the unsteady formulation of hot-streaks.

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Section: A Open National Combustion Codementioning

confidence: 99%

Computational Study of Combustor–Turbine Interactions

Miki

Moder

Liou

2018

Journal of Propulsion and Power

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“…In previous work [3], a mesh-based enhancement for the scalar mixing was proposed. It was speculated there that greater number of the flux-exchange between solution elements, i.e.…”

Section: Introductionmentioning

confidence: 99%

“…In Ref. 3, a honey-comb like polyhedral mesh was generated from a regular unstructured mesh through the processes of refinement, reconnection and agglomeration. A generic swirler combustor refined from a set of all-tetrahedral mesh is shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%