Pareto-efficient combustion modeling for improved CO-emission prediction in LES of a piloted turbulent dimethyl ether jet flame

Abstract This study extends the Pareto-efficient combustion (PEC) framework to adaptive LES combustion simulations of turbulent flames. With the focus on improving predictions of CO emissions, PEC is employed to augment a flamelet/progress variable (FPV) model through local sub-model assignment of a finite-rate chemistry (FRC) model. A series of LES-PEC calculations are performed on a piloted partially-premixed dimethyl ether flame (DME-D), using a combination of FPV and FRC models. The drift term is utilized in the PEC framework to estimate the model error for quantities of interest. The PEC approach is demonstrated to be capable of significantly improving the prediction of CO emissions compared to a monolithic FPV simulation. The improved accuracy is achieved by enriching the FPV model with FRC in regions where the low-order model is determined insufficient through the evaluation of the drift term. The computational cost is reduced by a factor of two in comparison to the full finite-rate calculation, while maintaining the same level of accuracy for CO predictions.

[1]  A. W. Vreman,et al.  Premixed and nonpremixed generated manifolds in large-eddy simulation of Sandia flame D and F , 2008 .

[2]  Robert S. Barlow,et al.  Raman/Rayleigh scattering and CO-LIF measurements in laminar and turbulent jet flames of dimethyl ether , 2012 .

[3]  Ghenadie Bulat,et al.  Large Eddy Simulation of an industrial gas turbine combustor using reduced chemistry with accurate pollutant prediction , 2017 .

[4]  Van Oijen,et al.  Modelling of Premixed Laminar Flames using Flamelet-Generated Manifolds , 2000 .

[5]  B. Coriton,et al.  Imaging measurements and LES-CMC modeling of a partially-premixed turbulent dimethyl ether/air jet flame , 2015 .

[6]  F. Dryer,et al.  Thermal decomposition reaction and a comprehensive kinetic model of dimethyl ether , 2008 .

[7]  S. Pope,et al.  Effects of molecular transport in LES/PDF of piloted turbulent dimethyl ether/air jet flames , 2017 .

[8]  Vigor Yang,et al.  Parallel on-the-fly adaptive kinetics in direct numerical simulation of turbulent premixed flame , 2017 .

[9]  Nasser Darabiha,et al.  Liminar premixed hydrogen/air counterflow flame simulations using flame prolongation of ILDM with differential diffusion , 2000 .

[10]  R. Barlow,et al.  SCALAR STRUCTURE OF TURBULENT PARTIALLY-PREMIXED DIMETHYL ETHER/AIR JET FLAMES , 2015 .

[11]  Zhuyin Ren,et al.  Dynamic adaptive chemistry via species time-scale and Jacobian-aided rate analysis , 2017 .

[12]  S. Pope,et al.  A pre-partitioned adaptive chemistry methodology for the efficient implementation of combustion chemistry in particle PDF methods , 2015 .

[13]  Matthias Ihme,et al.  Compliance of combustion models for turbulent reacting flow simulations , 2016 .

[14]  A. W. Vreman.  An eddy-viscosity subgrid-scale model for turbulent shear flow: Algebraic theory and applications , 2004 .

[15]  S. Pope.  Small scales, many species and the manifold challenges of turbulent combustion , 2013 .

[16]  Johan Larsson,et al.  Stability criteria for hybrid difference methods , 2008, J. Comput. Phys..

[17]  Lee Shunn,et al.  Large eddy simulations of the HIFiRE scramjet using a compressible flamelet/progress variable approach , 2015 .

[18]  Matthias Ihme,et al.  A Pareto-efficient combustion framework with submodel assignment for predicting complex flame configurations , 2015 .

[19]  B. Coriton,et al.  LES flamelet-progress variable modeling and measurements of a turbulent partially-premixed dimethyl ether jet flame , 2015 .

[20]  P. Moin,et al.  Progress-variable approach for large-eddy simulation of non-premixed turbulent combustion , 2004, Journal of Fluid Mechanics.

[21]  Tianfeng Lu,et al.  Systematic approach to obtain analytic solutions of quasi steady state species in reduced mechanisms. , 2006, The journal of physical chemistry. A.

[22]  B. Cuenot,et al.  Impact of direct integration of Analytically Reduced Chemistry in LES of a sooting swirled non-premixed combustor , 2018 .

[23]  Heinz Pitsch,et al.  Prediction of extinction and reignition in nonpremixed turbulent flames using a flamelet/progress variable model: 1. A priori study and presumed PDF closure , 2008 .

[24]  Chi-Wang Shu,et al.  Strong Stability-Preserving High-Order Time Discretization Methods , 2001, SIAM Rev..

[25]  Chi-Wang Shu,et al.  Efficient Implementation of Weighted ENO Schemes , 1995 .

[26]  A. Sadiki,et al.  A digital filter based generation of inflow data for spatially developing direct numerical or large eddy simulations , 2003 .