2021
DOI: 10.1007/s10494-021-00261-2
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A Strategy to Couple Thickened Flame Model and Adaptive Mesh Refinement for the LES of Turbulent Premixed Combustion

Abstract: A trend towards the increasing use of Adaptive Mesh Refinement (AMR) algorithms to simulate combustion processes is seen in the recent literature. AMR is attractive as it enables the physical phenomena of interest to be tracked by the numerical mesh, reducing the computational cost drastically. It is particularly efficient for combustion as small computational cells are needed very locally to resolve the flame structure. However, the questions arising from the coupling between AMR and the turbulent flame propa… Show more

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Cited by 12 publications
(8 citation statements)
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“…However the proposed approach only has an implicit dependence on SGS quantities and filtering is turned off in the region of the flame. Therefore it is well poised to take advantage of the resolution AMR grants without needing additional corrections as is the case when using as efficiency function Mehl et al (2021).…”
Section: Resultsmentioning
confidence: 99%
“…However the proposed approach only has an implicit dependence on SGS quantities and filtering is turned off in the region of the flame. Therefore it is well poised to take advantage of the resolution AMR grants without needing additional corrections as is the case when using as efficiency function Mehl et al (2021).…”
Section: Resultsmentioning
confidence: 99%
“…The AMR ensures the effectiveness of the computational grid for accuracy and computational time. 38,39
Figure 2.Computational grid on mid-plane (Z = 0) of the referee combustor with adaptive mesh refinement.
…”
Section: Computational Methodologymentioning
confidence: 99%
“…The AMR ensures the effectiveness of the computational grid for accuracy and computational time. 38,39 A mesh sensitivity is carried out for swirlers flowsplit study with all passages open to understand solution sensitivity to mesh resolution. The base cell size of 3 mm is fixed and the velocity AMR level is varied as 3, 4, and 5 which yielded minimum cell sizes of 0.375 mm, 0.1875 mm, and 0.09375 mm, respectively, as shown in Table 1.…”
Section: Computational Modelmentioning
confidence: 99%
“…In this framework, the target mesh resolution in region of high accuracy remains a parameter defined by the user, for example according to subgrid turbulence, subgrid flame-turbulence interaction criteria or, from a more practical point of view, based on overall computational budget. -Based on systematic, user-independent mesh refinement criteria: AMR has been widely used for the simulation of turbulent propagating flames (Cant et al, 2022;Lapointe et al, 2020;Mehl et al, 2018Mehl et al, , 2021Verhaeghe et al, 2022;Wilkening and Huld, 1999), but most of the methods proposed depend on case-specific thresholds. Indeed, most of the criteria to detect where a fine mesh is required are often based on dimensional quantities: velocity, temperature or species gradients (Cant et al, 2022;Rios et al, 2009), turbulent kinetic energy (Babuska and Miller, 1981), vorticity (Iapichino et al, 2008;Lapointe et al, 2020) or heat release rate (Haldenwang and Pignol, 2002;Lapointe et al, 2020).…”
Section: Vortex Wake Laminar Flamementioning
confidence: 99%