Effect of Fuel Composition and Differential Diffusion on Flame Stabilization in Reacting Syngas Jets in Turbulent Cross-Flow

doi:10.1016/j.combustflame.2015.06.013

Title: Effect of Fuel Composition and Differential Diffusion on Flame Stabilization in Reacting Syngas Jets in Turbulent Cross-Flow

Full Record
Other Related Research

Authors:: Minamoto, Yuki; Kolla, Hemanth; Grout, Ray W.; Gruber, Andrea; Chen, Jacqueline H.

Publication Date:: 2015-10-01

Research Org.:: Oak Ridge National Laboratory, Oak Ridge Leadership Computing Facility (OLCF); National Renewable Energy Lab. (NREL), Golden, CO (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1233153

Report Number(s):: NREL/JA-2C00-65554
Journal ID: ISSN 0010-2180

DOE Contract Number:: AC36-08GO28308

Resource Type:: Journal Article

Journal Name:: Combustion and Flame

Additional Journal Information:: Journal Volume: 162; Journal Issue: 10; Related Information: Combustion and Flame; Journal ID: ISSN 0010-2180

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 97 MATHEMATICS AND COMPUTING; Flame stabilization; Transverse jet; Syngas combustion; Direct numerical simulation

Citation Formats


                    Minamoto, Yuki, Kolla, Hemanth, Grout, Ray W., Gruber, Andrea, and Chen, Jacqueline H. Effect of Fuel Composition and Differential Diffusion on Flame Stabilization in Reacting Syngas Jets in Turbulent Cross-Flow.  United States: N. p., 2015. 
        Web.  doi:10.1016/j.combustflame.2015.06.013.

Copy to clipboard


                    Minamoto, Yuki, Kolla, Hemanth, Grout, Ray W., Gruber, Andrea, & Chen, Jacqueline H. Effect of Fuel Composition and Differential Diffusion on Flame Stabilization in Reacting Syngas Jets in Turbulent Cross-Flow.  United States.  doi:10.1016/j.combustflame.2015.06.013.

Copy to clipboard


                    Minamoto, Yuki, Kolla, Hemanth, Grout, Ray W., Gruber, Andrea, and Chen, Jacqueline H. Thu .  
        "Effect of Fuel Composition and Differential Diffusion on Flame Stabilization in Reacting Syngas Jets in Turbulent Cross-Flow".  United States.  doi:10.1016/j.combustflame.2015.06.013.

Copy to clipboard


                    
@article{osti_1233153,

  title        = {Effect of Fuel Composition and Differential Diffusion on Flame Stabilization in Reacting Syngas Jets in Turbulent Cross-Flow},

  author       = {Minamoto, Yuki and Kolla, Hemanth and Grout, Ray W. and Gruber, Andrea and Chen, Jacqueline H.},

  abstractNote = {},

  doi          = {10.1016/j.combustflame.2015.06.013},

  journal      = {Combustion and Flame},

  issn         = {0010-2180},

  number       = 10,

  volume       = 162,

  place        = {United States},

  year         = {2015},

  month        = {10}

}

Copy to clipboard

Journal Article:

DOI: 10.1016/j.combustflame.2015.06.013

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Effect of fuel composition and differential diffusion on flame stabilization in reacting syngas jets in turbulent cross-flow

Journal Article Minamoto, Yuki ; Kolla, Hemanth ; Grout, Ray W. ; ... - Combustion and Flame

Here, three-dimensional direct numerical simulation results of a transverse syngas fuel jet in turbulent cross-flow of air are analyzed to study the influence of varying volume fractions of CO relative to H ₂ in the fuel composition on the near field flame stabilization. The mean flame stabilizes at a similar location for CO-lean and CO-rich cases despite the trend suggested by their laminar flame speed, which is higher for the CO-lean condition. To identify local mixtures having favorable mixture conditions for flame stabilization, explosive zones are defined using a chemical explosive mode timescale. The explosive zones related to flame stabilizationmore »« less
Cited by 4
DOI: 10.1016/j.combustflame.2015.06.013

Full Text Available
Mechanisms of Flame Stabilization and Blowout in a Reacting Turbulent Hydrogen Jet in Cross-Flow

Journal Article Kolla, H ; Grout, R W ; Gruber, A ; ... - Combustion and Flame

The mechanisms contributing to flame stabilization and blowout in a nitrogen-diluted hydrogen transverse jet in a turbulent boundary layer cross-flow (JICF) are investigated using three-dimensional direct numerical simulation (DNS) with detailed chemistry. Non-reacting JICF DNS were performed to understand the relative magnitude and physical location of low velocity regions on the leeward side of the fuel jet where a flame can potentially anchor. As the injection angle is reduced from 90{sup o} to 70{sup o}, the low velocity region was found to diminish significantly, both in terms of physical extent and magnitude, and hence, its ability to provide favorable conditionsmore »« less
DOI: 10.1016/j.combustflame.2012.01.012
A DNS evaluation of mixing models for transported PDF modelling of turbulent nonpremixed flames

Journal Article Krisman, Alex ; Tang, Joshua C. K. ; Hawkes, Evatt R. ; ... - Combustion and Flame

Transported probability density function (TPDF) approaches are well suited to modelling turbulent, reacting, variable density flows. One of the main challenges to the successful deployment of TPDF methods is accurately modelling the unclosed molecular mixing term. This study examines three of the most widely used mixing models: the Interaction by Exchange with the Mean (IEM), Modified Curl (MC) and Euclidean Minimum Spanning Tree (EMST) models. Direct numerical simulation (DNS) data-sets were used to provide both initial conditions and inputs needed over the course of the runs, including the mean flow velocities, mixing frequency, and the turbulent diffusion coefficient. The same chemical mechanism and thermodynamic properties were used, allowing the study to focus on the mixing model. The simulation scenario was a one-dimensional, nonpremixed, turbulent jet flame burning either a syngas or ethylene fuel stream that featured extinction and reignition. This test scenario was selected because extinction and reignition phenomena are sensitive to the mixing model. Three DNS cases were considered for both the syngas and ethylene cases with a parametric variation of Reynolds and Damköhler numbers, respectively. Extinction events became more popular with increasing Reynolds number in the syngas cases and with decreasing Damköhler number in the ethylene cases. The model was first tested with the mixing frequency defined from the dissipation rate and variance of mixture fraction. With this definition, for the syngas cases this study finds that the TPDF method is successful at predicting flame extinction and reignition using all three mixing models for the relatively lower and intermediate Reynolds number cases, but that all models under-predict reignition in the relatively higher Reynolds number case. In the ethylene fuelled cases, only the EMST mixing model correctly predicts the reignition event for the two higher Damköhler number cases, yet, in the lowest Damköhler number case the EMST model over-predicts reignition and the IEM and MC models under-predict it. Mixing frequency was then modelled based on the turbulence frequency and a model constantmore »« less
Cited by 18
DOI: 10.1016/j.combustflame.2014.01.009

Full Text Available
CFD modeling of commercial-scale entrained-flow coal gasifiers

Conference Ma, J. ; Zitney, S.

Optimization of an advanced coal-fired integrated gasification combined cycle system requires an accurate numerical prediction of gasifier performance. Computational fluid dynamics (CFD) has been used to model the turbulent multiphase reacting flow inside commercial-scale entrained-flow coal gasifiers. Due to the complexity of the physical and chemical processes involved, the accuracy of sub-models requires further improvement. Built upon a previously developed CFD model for entrained-flow gasification, the advanced physical and chemical sub-models presented in this paper include a moisture vaporization model with consideration of high mass transfer rate and a coal devolatilization model with more species to represent coal volatiles andmore »« less
Structure and Dynamics of Fuel Jets Injected into a High-Temperature Subsonic Crossflow: High-Data-Rate Laser Diagnostic Investigation under Steady and Oscillatory Conditions

Technical Report Lucht, Robert ; Anderson, William

An investigation of subsonic transverse jet injection into a subsonic vitiated crossflow is discussed. The reacting jet in crossflow (RJIC) system investigated as a means of secondary injection of fuel in a staged combustion system. The measurements were performed in test rigs featuring (a) a steady, swirling crossflow and (b) a crossflow with low swirl but significant oscillation in the pressure field and in the axial velocity. The rigs are referred to as the steady state rig and the instability rig. Rapid mixing and chemical reaction in the near field of the jet injection is desirable in this application. Temporallymore »« less
DOI: 10.2172/1222578

Full Text Available

Similar Records