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Title: TABULATED EQUIVALENT SDR FLAMELET (TESF) MODEFL

Abstract

The code consists of an implementation of a novel tabulated combustion model for non-premixed flames in CFD solvers. This novel technique/model is used to implement an unsteady flamelet tabulation without using progress variables for non-premixed flames. It also has the capability to include history effects which is unique within tabulated flamelet models. The flamelet table generation code can be run in parallel to generate tables with large chemistry mechanisms in relatively short wall clock times. The combustion model/code reads these tables. This framework can be coupled with any CFD solver with RANS as well as LES turbulence models. This framework enables CFD solvers to run large chemistry mechanisms with large number of grids at relatively lower computational costs. Currently it has been coupled with the Converge CFD code and validated against available experimental data. This model can be used to simulate non-premixed combustion in a variety of applications like reciprocating engines, gas turbines and industrial burners operating over a wide range of fuels.

Authors:
; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
DOE OFFICE OF VEHICLE TECHNOLOGY
Contributing Org.:
ARGONNE NATIONAL LABORATORY
OSTI Identifier:
1365557
Report Number(s):
TESF; 005321MLTPL00
SF-16-159
DOE Contract Number:
AC02-06CH11357
Resource Type:
Software
Software Revision:
00
Software Package Number:
005321
Software CPU:
MLTPL
Source Code Available:
Yes
Country of Publication:
United States

Citation Formats

KUNDU, PRITHWISH, AMEEN, mUHSIN MOHAMMED, UNNIKRISHNAN, UMESH, and SOM, SIBENDU. TABULATED EQUIVALENT SDR FLAMELET (TESF) MODEFL. Computer software. Vers. 00. DOE OFFICE OF VEHICLE TECHNOLOGY. 20 Jun. 2017. Web.
KUNDU, PRITHWISH, AMEEN, mUHSIN MOHAMMED, UNNIKRISHNAN, UMESH, & SOM, SIBENDU. (2017, June 20). TABULATED EQUIVALENT SDR FLAMELET (TESF) MODEFL (Version 00) [Computer software].
KUNDU, PRITHWISH, AMEEN, mUHSIN MOHAMMED, UNNIKRISHNAN, UMESH, and SOM, SIBENDU. TABULATED EQUIVALENT SDR FLAMELET (TESF) MODEFL. Computer software. Version 00. June 20, 2017.
@misc{osti_1365557,
title = {TABULATED EQUIVALENT SDR FLAMELET (TESF) MODEFL, Version 00},
author = {KUNDU, PRITHWISH and AMEEN, mUHSIN MOHAMMED and UNNIKRISHNAN, UMESH and SOM, SIBENDU},
abstractNote = {The code consists of an implementation of a novel tabulated combustion model for non-premixed flames in CFD solvers. This novel technique/model is used to implement an unsteady flamelet tabulation without using progress variables for non-premixed flames. It also has the capability to include history effects which is unique within tabulated flamelet models. The flamelet table generation code can be run in parallel to generate tables with large chemistry mechanisms in relatively short wall clock times. The combustion model/code reads these tables. This framework can be coupled with any CFD solver with RANS as well as LES turbulence models. This framework enables CFD solvers to run large chemistry mechanisms with large number of grids at relatively lower computational costs. Currently it has been coupled with the Converge CFD code and validated against available experimental data. This model can be used to simulate non-premixed combustion in a variety of applications like reciprocating engines, gas turbines and industrial burners operating over a wide range of fuels.},
doi = {},
year = {Tue Jun 20 00:00:00 EDT 2017},
month = {Tue Jun 20 00:00:00 EDT 2017},
note =
}

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  • Two formulations of a turbulent combustion model based on the approximated diffusion flame presumed conditional moment (ADF-PCM) approach [J.-B. Michel, O. Colin, D. Veynante, Combust. Flame 152 (2008) 80-99] are presented. The aim is to describe autoignition and combustion in nonpremixed and partially premixed turbulent flames, while accounting for complex chemistry effects at a low computational cost. The starting point is the computation of approximate diffusion flames by solving the flamelet equation for the progress variable only, reading all chemical terms such as reaction rates or mass fractions from an FPI-type look-up table built from autoigniting PSR calculations using complexmore » chemistry. These flamelets are then used to generate a turbulent look-up table where mean values are estimated by integration over presumed probability density functions. Two different versions of ADF-PCM are presented, differing by the probability density functions used to describe the evolution of the stoichiometric scalar dissipation rate: a Dirac function centered on the mean value for the basic ADF-PCM formulation, and a lognormal function for the improved formulation referenced ADF-PCM{chi}. The turbulent look-up table is read in the CFD code in the same manner as for PCM models. The developed models have been implemented into the compressible RANS CFD code IFP-C3D and applied to the simulation of the Cabra et al. experiment of a lifted methane jet flame [R. Cabra, J. Chen, R. Dibble, A. Karpetis, R. Barlow, Combust. Flame 143 (2005) 491-506]. The ADF-PCM{chi} model accurately reproduces the experimental lift-off height, while it is underpredicted by the basic ADF-PCM model. The ADF-PCM{chi} model shows a very satisfactory reproduction of the experimental mean and fluctuating values of major species mass fractions and temperature, while ADF-PCM yields noticeable deviations. Finally, a comparison of the experimental conditional probability densities of the progress variable for a given mixture fraction with model predictions is performed, showing that ADF-PCM{chi} reproduces the experimentally observed bimodal shape and its dependency on the mixture fraction, whereas ADF-PCM cannot retrieve this shape. (author)« less
  • The TRACES computer program relates the radioactivity concentration in up to 12 specific environmental media to the potential radiation dose to a member of the public via up to 21 exposure pathways. It can calculate doses arising from environmental contamination of short duration (short term accidental release) or personal exposure of short duration (if the receptor evacuates). It can also be used to calculate potential dose equivalent associated with radioactive environmental media arising from long term discharges (operating effluent).

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