Large Eddy Simulation of a Bluff Body Stabilized Lean Premixed Flame
نویسندگان
چکیده
منابع مشابه
Large-eddy simulation of a bluff-body-stabilized non-premixed flame using a recursive filter-refinement procedure
A large-eddy simulation (LES) of a bluff-body-stabilized flame has been carried out using a new strategy for LES grid generation. The recursive filter-refinement procedure (RFRP) has been used to generate optimized clustering for variable density combustion simulations. A methane–hydrogen fuel-based bluff-body-stabilized experimental configuration has been simulated using state-of-the-art LES a...
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A computational error analysis is applied to the large-eddy simulation of the turbulent non-premixed Sydney bluff-body flame, where the error is defined with respect to experimental data. The errorlandscape approach is extended to heterogeneous compressible turbulence, which is coupled to combustion as described by a flamelet model. The Smagorinsky model formulation is used to model the unknown...
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Nomenclature CR,CI = empirical constants C = speed of sound, m/s D = Van-Driest damping function E = specific total energy f = frequency, Hz G = level-set variable hf,i = heat of formation of species i at reference condition k = turbulent kinetic energy lF = laminar flame thickness, m l = inner-layer flame thickness, m n = unit vector normal to flame front p = pressure Pr = Prandtl number q = r...
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The present research aims at providing a reliable model for the simulation of oscillating flames which are often discovered in industrial gas turbine combustors operating at lean premixed conditions. The paper presents a Large Eddy Simulation of an oscillating bluff-body stabilised flame with a probability density function model of the subfilter scale interaction. The results show good overall ...
متن کاملLarge eddy simulation/probability density function simulations of bluff body stabilized flames
0 10 20 30 −50 0 50 100 150 r (mm) U (m /s ) x/DB = 0.2 0 10 20 30 −10 −5 0 5 10 r (mm) V (m /s ) x/DB = 0.2 0 10 20 30 −50 0 50 100 150 r (mm) U (m /s ) x/DB = 0.6 0 10 20 30 −10 −5 0 5 10 r (mm) V (m /s ) x/DB = 0.6 0 10 20 30 −50 0 50 100 150 r (mm) U (m /s ) x/DB = 1.4 0 10 20 30 −10 −5 0 5 10 x/DB = 1.4 r (mm) V (m /s ) Experiment Raman et al. LES/HPDF Liu et al. Merci et al. Fig. 1. Mean ...
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ژورنال
عنوان ژورنال: Journal of Combustion
سال: 2014
ISSN: 2090-1968,2090-1976
DOI: 10.1155/2014/710254