Sparse MMC-LES of a Sydney swirl flame

Large eddy simulation of a supersonic lifted hydrogen flame with sparse-Lagrangian multiple mapping conditioning approach

“…The resultant characteristic spacing between particles in the central jet and shear layer is approximately ΔL = 0.12 mm. The low sensitivity of MMC-LES to increased resolution has been extensively demonstrated for subsonic jet flames [26,35], and more recently for supersonic combustion as well [29]. The particle resolution used in the present work is comparable to the finest case in our recent study with ΔL = 0.115 mm [29].…”

“…Sparse MMC-LES has been extensively validated with a range of subsonic experimental combustion configurations of practical relevance, e.g. piloted methane / air jet diffusion flames [25], methane / air swirl flames [26], Sandia DME flame series [27] and turbulent spray flames [28]. In our recent work, sparse MMC-LES was extended to highly-compressible conditions for the first time [29] and demonstrated good accuracy against experimental data [30] for velocity, pressure and temperature data in a model supersonic combustor.…”

LES-CMC Simulations of Strong Swirling Confined Flames in a Model Gas Turbine Combustor

“…LES of a swirl-stabilized kerosene spray flame has been performed by Georg et al [4] to study the performance of combustors. The non-premixed swirl-stabilized flames have been extensively studied using LES with advanced combustion models [5][6][7][8]. It may be observed in the literature that LES with conditional moment closure (CMC) model has capabilities to handle complex processes in the strong swirling flames [5,8].…”

“…The non-premixed swirl-stabilized flames have been extensively studied using LES with advanced combustion models [5][6][7][8]. It may be observed in the literature that LES with conditional moment closure (CMC) model has capabilities to handle complex processes in the strong swirling flames [5,8]. Hence, LES-CMC method may be used to predict complex interaction of the turbulent flow field with chemical reactions in gas turbine combustors.…”

Prediction of a Swirl-Stabilized CH4/H2 Flame Structure Using Conditional Moment Closure Coupled with OpenFOAM

“…Because of the complex turbulence–chemistry interaction, it is challenging to investigate non-premixed swirl-stabilized flames, both experimentally and numerically . Recent advances in experimental techniques such as laser diagnostics, particle image velocimetry, and so forth help to investigate flame behavior in detail. − The availability of instantaneous and mean composition structure of a swirl-stabilized flame can provide an excellent platform for the development of simulation tools to handle complex problems . The series of Sydney swirl-stabilized flames ideally suited for these requirements.…”