2017/05/12 by Malik Hassanaly, Heeseok Koo, Hassanaly, Malik +7 · 1 citation
Engineering · Mathematics · #Combustion and flame dynamics #Computational Fluid Dynamics and Aerodynamics #Computational Physics (physics.comp-ph) #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Gas Dynamics and Kinetic Theory
paper · pdf · doi:10.48550/arxiv.1705.04777
openalex publication_date 2017/05/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Large eddy simulation (LES) has become the de-facto computational tool for\nmodeling complex reacting flows, especially in gas turbine applications.\nHowever, readily usable general-purpose LES codes for complex geometries are\ntypically academic or proprietary/commercial in nature. The objective of this\nwork is to develop and disseminate an open source LES tool for low-Mach number\nturbulent combustion using the OpenFOAM framework. In particular, a\ncollocated-mesh approach suited for unstructured grid formulation is provided.\nUnlike other fluid dynamics models, LES accuracy is intricately linked to\nso-called primary and secondary conservation properties of the numerical\ndiscretization schemes. This implies that although the solver only evolves\nequations for mass, momentum, and energy, the implied discrete equation for\nkinetic energy (square of velocity) should be minimally-dissipative. Here, a\nspecific spatial and temporal discretization is imposed such that this kinetic\nenergy dissipation is minimized. The method is demonstrated using manufactured\nsolutions approach on regular and skewed meshes, a canonical flow problem, and\na turbulent sooting flame in a complex domain relevant to gas turbines\napplications.\n