Influence of thermal expansion on fluid dynamics of turbulent premixed combustion and its modelling implications

N Chakraborty - Flow, Turbulence and Combustion, 2021 - Springer
The purpose of this paper is to demonstrate the effects of thermal expansion, as a result of
heat release arising from exothermic chemical reactions, on the underlying turbulent fluid …

Self-adaptive turbulence eddy simulation of a premixed jet combustor

Z Xia, H Zhang, X Han, Z Ren - Physics of Fluids, 2023 - pubs.aip.org
The self-adaptive turbulence eddy simulation (SATES) is employed to investigate the lean
premixed methane/air turbulent flame in a single-nozzle model gas turbine combustor, in …

A scaling law for the recirculation zone length behind a bluff body in reacting flows

JC Massey, I Langella, N Swaminathan - Journal of Fluid Mechanics, 2019 - cambridge.org
The recirculation zone length behind a bluff body is influenced by the turbulence intensity at
the base of the body in isothermal flows and also the heat release and its interaction with …

Differential diffusion modelling for LES of premixed and partially premixed flames with presumed FDF

G Ferrante, G Eitelberg, I Langella - Combustion Theory and …, 2024 - Taylor & Francis
Large eddy simulations (LES) with flamelet and presumed filtered density function closure
are used to simulate turbulent premixed and partially premixed hydrogen flames. Different …

Large-eddy simulation of reacting flows in industrial gas turbine combustor

I Langella, ZX Chen, N Swaminathan… - Journal of Propulsion …, 2018 - arc.aiaa.org
The turbulent reacting flow in an industrial gas turbine combustor operating at 3 bar is
computed using the large-eddy simulation paradigm. The subgrid-scale combustion is …

Assessment of the LES-FGM framework for capturing stable and unstable modes in a hydrogen/methane fuelled premixed combustor

JZ Ho, S Jella, M Talei, G Bourque, T Indlekofer… - Combustion and …, 2023 - Elsevier
The main objective of this paper is to assess the capability of compressible Large Eddy
Simulations (LES) to capture azimuthal combustion instability. The thickened flame model …

Numerical investigation of a coupled blow-off/flashback process in a high-pressure lean-burn combustor

A Soli, I Langella - Journal of Engineering for Gas …, 2023 - asmedigitalcollection.asme.org
Large eddy simulation is used to investigate the flashback mechanism caused by the
combustion-induced vortex breakdown (CIVB) in a high-pressure lean-burn annular …

[HTML][HTML] Numerical and experimental investigations of hydrogen-air-steam deflagration in two connected compartments with initial turbulent flow

F Wang, J Xiao, S Gupta, M Freitag… - Process Safety and …, 2024 - Elsevier
Turbulence in the hydrogen combustion field influences flame propagation and its
consequences, which is of great importance for the safety of hydrogen/nuclear energy …

Analysis of flame front breaks appearing in LES of inhomogeneous jet flames using flamelets

A Soli, I Langella, ZX Chen - Flow, Turbulence and Combustion, 2022 - Springer
The physical mechanism leading to flame local extinction remains a key issue to be further
understood. An analysis of large eddy simulation (LES) data with presumed probability …

Turbulent flame shape switching at conditions relevant for gas turbines

I Langella, J Heinze, T Behrendt… - … for Gas Turbines …, 2020 - asmedigitalcollection.asme.org
A numerical investigation is conducted to shed light on the reasons leading to different flame
configurations in gas turbine (GT) combustion chambers of aeronautical interest. Large eddy …