Prediction of Combustion Stability and Flashback in Turbines with High-Hydrogen Fuel

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During the duration of this sponsorship, we broadened our understanding of combustion instabilities through both analytical and experimental work. Predictive models were developed for flame response to transverse acoustic instabilities and for quantifying how a turbulent flame responds to velocity and fuel/air ratio forcing. Analysis was performed on the key instability mechanisms controlling heat release response for flames over a wide range of instability frequencies. Importantly, work was done closely with industrial partners to transition existing models into internal instability prediction codes. Experimentally, the forced response of hydrogen-enriched natural gas/air premixed and partially premixed flames were measured. The response of ... continued below

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Lieuwen, Tim; Santavicca, Dom & Yang, Vigor March 31, 2012.

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Description

During the duration of this sponsorship, we broadened our understanding of combustion instabilities through both analytical and experimental work. Predictive models were developed for flame response to transverse acoustic instabilities and for quantifying how a turbulent flame responds to velocity and fuel/air ratio forcing. Analysis was performed on the key instability mechanisms controlling heat release response for flames over a wide range of instability frequencies. Importantly, work was done closely with industrial partners to transition existing models into internal instability prediction codes. Experimentally, the forced response of hydrogen-enriched natural gas/air premixed and partially premixed flames were measured. The response of a lean premixed flame was investigated, subjected to velocity, equivalence ratio, and both forcing mechanisms simultaneously. In addition, important physical mechanisms controlling the response of partially premixed flames to inlet velocity and equivalence ratio oscillations were analyzed. This final technical report summarizes our findings and major publications stemming from this program.

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  • Report No.: None
  • Grant Number: FG26-07NT43069
  • DOI: 10.2172/1121243 | External Link
  • Office of Scientific & Technical Information Report Number: 1121243
  • Archival Resource Key: ark:/67531/metadc872418

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  • March 31, 2012

Added to The UNT Digital Library

  • Sept. 16, 2016, 12:32 a.m.

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  • Dec. 6, 2016, 4:19 p.m.

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Lieuwen, Tim; Santavicca, Dom & Yang, Vigor. Prediction of Combustion Stability and Flashback in Turbines with High-Hydrogen Fuel, report, March 31, 2012; United States. (digital.library.unt.edu/ark:/67531/metadc872418/: accessed September 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.