Rayleigh/Raman/LIF measurements in a turbulent lean premixed combustor

Nandula, S.; Pitz, Robert W.; Fiechtner, Gregory J.

doi:10.2514/6.1996-937

Cited by 25 publications

(50 citation statements)

References 17 publications

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“…Results will be compared to the results presented in ([Bhargava et al, 2000]). Finally, once all the modeling issues are resolved, we will revisit these studies using the full 3D LES.…”

Section: Summary and Future Plansmentioning

confidence: 99%

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Les Software for the Design of Low Emission Combustion Systems for Vision 21 Plants

Cannon¹,

Adumitroaie²,

McDaniel³

et al. 2002

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Further development of a combustion Large Eddy Simulation (LES) code for the design of advanced gaseous combustion systems is described in this seventh quarterly report. CFD Research Corporation is developing the LES module within the parallel, unstructured solver included in the commercial CFD-ACE+ software. In this quarter, the Localized Dynamic subgrid Kinetic energy Model (LDKM) was improved and an initial Turbulent Artificial Neural Net (TANN) was developed. Validation and testing of the combustion LES code was performed for the Vanderbilt lean premixed combustor and the Loughborough University combustor port flow experiment.Next quarter, LES software development and testing will continue. Alpha testing of the code will continue to be performed on cases of interest to the industrial consortium. Optimization of the subgrid models will be pursued, particularly with the In Situ Adaptive Tabulation (ISAT) approach. Also next quarter, the demonstration of the TANN approach in CFD-ACE+ will be accomplished.ii 8321/7 INTRODUCTIONVision 21 combustion systems will require innovative low emission designs and low development costs if Vision 21 goals are to be realized. In this three-year project, an advanced computational software tool will be developed for the design of low emission combustion systems required for Vision 21 clean energy plants. The combustion Large Eddy Simulation (LES) software will be able to accurately simulate the highly transient nature of gaseous-fueled turbulent combustion so that innovative concepts can be assessed and developed with fewer high-cost experimental tests. During the first year, the project has included the development and implementation of improved chemistry (reduced GRI mechanism), subgrid turbulence (localized dynamic), and subgrid combustion-turbulence interaction (Linear Eddy) models into the CFD-ACE+ code. University expertise (Georgia Tech and UC Berkeley) has been utilized to help develop and implement these advanced submodels in the unstructured, parallel CFD flow solver. Efficient numerical algorithms that rely on in situ look-up tables or artificial neural networks have been implemented for chemistry calculations. Now, in the second year, the combustion LES software will be evaluated and validated using experimental data from lab-scale and industrial test configurations, including important benchmark data from DOE-NETL. During the last year, seven industrial and academic partners will take the combustion LES code and exercise it on problems of their choice. Final feedback and optimizations will then be implemented in the final release version of the combustion LES software. EXECUTIVE SUMMARYWork in this seventh quarter (April -June 2002) has included further development of the LDKM and LEM subgrid models. Georgia Tech has extended the laminar ANN to include turbulent fluctuations. This TANN has been tested in their stand-alone LEM code and will be implemented and tested in the CFD-ACE+ code during the next quarter. Combustor LES validation has been carrie...

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“…Results will be compared to the results presented in ([Bhargava et al, 2000]). Finally, once all the modeling issues are resolved, we will revisit these studies using the full 3D LES.…”

Section: Summary and Future Plansmentioning

confidence: 99%

“…Detailed temperature and emissions measurements from the Vanderbilt/Sandia (Nandula et al, 1996) lean premixed bluff-body combustor are being used to validate the combustion LES software. This test case was chosen by the industrial consortium and was described in the last quarterly report.…”

Section: Vanderbilt Lean Premixed Bluff-body Combustor Test Casementioning

confidence: 99%

Les Software for the Design of Low Emission Combustion Systems for Vision 21 Plants

Cannon¹,

Adumitroaie²,

McDaniel³

et al. 2002

View full text Add to dashboard Cite

show abstract

“…Detailed temperature and emissions measurements from the Vanderbilt/Sandia (Nandula et al, 1996) lean premixed bluff-body combustor are being used to validate the combustion LES software. This test case was chosen by the industrial consortium during the 2 nd consortium meeting at CFDRC in January 2002.…”

Section: Lean Premixed Bluff-body Combustor Test Casementioning

confidence: 99%

“…• Lean premixed methane-air bluff-body combustor (Vanderbilt and Sandia, Nandula et al, 1996). • Lean premixed propane-air back-step combustor (Pitz and Daily, 1983).…”

Section: Selection Of Validation Casesmentioning

confidence: 99%

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Fuel-Flexible Gasification-Combustion Technology for Production of H2 and Sequestration-Ready Co2

Rizeq¹,

West²,

Frydman³

et al. 2002

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Further development of a combustion Large Eddy Simulation (LES) code for the design of advanced gaseous combustion systems is described in this sixth quarterly report. CFD Research Corporation (CFDRC) is developing the LES module within the parallel, unstructured solver included in the commercial CFD-ACE+ software. In this quarter, in-situ adaptive tabulation (ISAT) for efficient chemical rate storage and retrieval was implemented and tested within the Linear Eddy Model (LEM). ISAT type 3 is being tested so that extrapolation can be performed and further improve the retrieval rate. Further testing of the LEM for subgrid chemistry was performed for parallel applications and for multi-step chemistry. Validation of the software on backstep and bluff-body reacting cases were performed. Initial calculations of the SimVal experiment at Georgia Tech using their LES code were performed. Georgia Tech continues the effort to parameterize the LEM over composition space so that a neural net can be used efficiently in the combustion LES code. A new and improved Artificial Neural Network (ANN), with log-transformed output, for the 1-step chemistry was implemented in CFDRC's LES code and gave reasonable results. This quarter, the 2 nd consortium meeting was held at CFDRC.Next quarter, LES software development and testing will continue. Alpha testing of the code will continue to be performed on cases of interest to the industrial consortium. Optimization of subgrid models will be pursued, particularly with the ISAT approach. Also next quarter, the demonstration of the neural net approach, for multi-step chemical kinetics speed-up in CFD-ACE+, will be accomplished.ii 8321/5

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Investigations of air flow behavior past a conical bluff body using particle imaging velocimetry

2015

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Rayleigh/Raman/LIF measurements in a turbulent lean premixed combustor

Cited by 25 publications

References 17 publications

Les Software for the Design of Low Emission Combustion Systems for Vision 21 Plants

Les Software for the Design of Low Emission Combustion Systems for Vision 21 Plants

Fuel-Flexible Gasification-Combustion Technology for Production of H2 and Sequestration-Ready Co2

Investigations of air flow behavior past a conical bluff body using particle imaging velocimetry

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