Predicting dynamic heat release rate in turbulent flames with reduced-order models

Christopher Martin, Joeseph Ranalli, Paul Black, William Baumann, Uri Vandsburger, Robert West

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

New developments in reduced-order models for the prediction of thermo-acoustic instabilities in gas-turbine combustors have resulted in two models to predict the dynamic heat-release rate of lean-premixed turbu-lent flames subject to acoustic perturbations. These zero-and one-dimensional models were adapted from well-stirred and plug-flow prototypes and qualitatively compared with dynamic flame transfer function data. The results support the conclusion that convective residence time scales determine the flame band-width with only implicit dependencies on chemical kinetic times. The reduced-order models have also been validated by an early stability mapping of the stability limits for a laboratory-scale lean-premixed research combustor were found to be accurate within the testable operating envelope. Current efforts focus on refining existing reduced order models to make quantitative stability predictions for validation, and generating new models with improved spatial resolution to explore the possibility of alternate physical mechanisms leading to similar observed behaviors.

Original languageEnglish (US)
Title of host publicationFall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion"
PublisherCombustion Institute
Pages382-395
Number of pages14
ISBN (Electronic)9781604239454
StatePublished - 2007
EventFall Technical Meeting of the Eastern States Section of the Combustion Institute 2007: Chemical and Physical Processes in Combustion - Charlottesville, United States
Duration: Oct 21 2007Oct 24 2007

Other

OtherFall Technical Meeting of the Eastern States Section of the Combustion Institute 2007: Chemical and Physical Processes in Combustion
CountryUnited States
CityCharlottesville
Period10/21/0710/24/07

Fingerprint

turbulent flames
heat
flames
combustion chambers
Combustors
Acoustics
acoustic instability
gas turbines
refining
plugs
predictions
Reaction kinetics
transfer functions
Refining
Transfer functions
Gas turbines
Hot Temperature
reaction kinetics
envelopes
spatial resolution

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Physical and Theoretical Chemistry

Cite this

Martin, C., Ranalli, J., Black, P., Baumann, W., Vandsburger, U., & West, R. (2007). Predicting dynamic heat release rate in turbulent flames with reduced-order models. In Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion" (pp. 382-395). Combustion Institute.
Martin, Christopher ; Ranalli, Joeseph ; Black, Paul ; Baumann, William ; Vandsburger, Uri ; West, Robert. / Predicting dynamic heat release rate in turbulent flames with reduced-order models. Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion". Combustion Institute, 2007. pp. 382-395
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title = "Predicting dynamic heat release rate in turbulent flames with reduced-order models",
abstract = "New developments in reduced-order models for the prediction of thermo-acoustic instabilities in gas-turbine combustors have resulted in two models to predict the dynamic heat-release rate of lean-premixed turbu-lent flames subject to acoustic perturbations. These zero-and one-dimensional models were adapted from well-stirred and plug-flow prototypes and qualitatively compared with dynamic flame transfer function data. The results support the conclusion that convective residence time scales determine the flame band-width with only implicit dependencies on chemical kinetic times. The reduced-order models have also been validated by an early stability mapping of the stability limits for a laboratory-scale lean-premixed research combustor were found to be accurate within the testable operating envelope. Current efforts focus on refining existing reduced order models to make quantitative stability predictions for validation, and generating new models with improved spatial resolution to explore the possibility of alternate physical mechanisms leading to similar observed behaviors.",
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Martin, C, Ranalli, J, Black, P, Baumann, W, Vandsburger, U & West, R 2007, Predicting dynamic heat release rate in turbulent flames with reduced-order models. in Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion". Combustion Institute, pp. 382-395, Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2007: Chemical and Physical Processes in Combustion, Charlottesville, United States, 10/21/07.

Predicting dynamic heat release rate in turbulent flames with reduced-order models. / Martin, Christopher; Ranalli, Joeseph; Black, Paul; Baumann, William; Vandsburger, Uri; West, Robert.

Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion". Combustion Institute, 2007. p. 382-395.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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T1 - Predicting dynamic heat release rate in turbulent flames with reduced-order models

AU - Martin, Christopher

AU - Ranalli, Joeseph

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AU - Baumann, William

AU - Vandsburger, Uri

AU - West, Robert

PY - 2007

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N2 - New developments in reduced-order models for the prediction of thermo-acoustic instabilities in gas-turbine combustors have resulted in two models to predict the dynamic heat-release rate of lean-premixed turbu-lent flames subject to acoustic perturbations. These zero-and one-dimensional models were adapted from well-stirred and plug-flow prototypes and qualitatively compared with dynamic flame transfer function data. The results support the conclusion that convective residence time scales determine the flame band-width with only implicit dependencies on chemical kinetic times. The reduced-order models have also been validated by an early stability mapping of the stability limits for a laboratory-scale lean-premixed research combustor were found to be accurate within the testable operating envelope. Current efforts focus on refining existing reduced order models to make quantitative stability predictions for validation, and generating new models with improved spatial resolution to explore the possibility of alternate physical mechanisms leading to similar observed behaviors.

AB - New developments in reduced-order models for the prediction of thermo-acoustic instabilities in gas-turbine combustors have resulted in two models to predict the dynamic heat-release rate of lean-premixed turbu-lent flames subject to acoustic perturbations. These zero-and one-dimensional models were adapted from well-stirred and plug-flow prototypes and qualitatively compared with dynamic flame transfer function data. The results support the conclusion that convective residence time scales determine the flame band-width with only implicit dependencies on chemical kinetic times. The reduced-order models have also been validated by an early stability mapping of the stability limits for a laboratory-scale lean-premixed research combustor were found to be accurate within the testable operating envelope. Current efforts focus on refining existing reduced order models to make quantitative stability predictions for validation, and generating new models with improved spatial resolution to explore the possibility of alternate physical mechanisms leading to similar observed behaviors.

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Martin C, Ranalli J, Black P, Baumann W, Vandsburger U, West R. Predicting dynamic heat release rate in turbulent flames with reduced-order models. In Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion". Combustion Institute. 2007. p. 382-395