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AFIRMATIVE SIGNED

Acoustic-Flow Interaction Models for Advancing Thermoacoustic Instability prediction in Very low Emission combustors

Total Cost €

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EC-Contrib. €

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Project "AFIRMATIVE" data sheet

The following table provides information about the project.

Coordinator
IMPERIAL COLLEGE OF SCIENCE TECHNOLOGY AND MEDICINE 

Organization address
address: SOUTH KENSINGTON CAMPUS EXHIBITION ROAD
city: LONDON
postcode: SW7 2AZ
website: http://www.imperial.ac.uk/

contact info
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 Coordinator Country United Kingdom [UK]
 Total cost 1˙985˙288 €
 EC max contribution 1˙985˙288 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-COG
 Funding Scheme ERC-COG
 Starting year 2018
 Duration (year-month-day) from 2018-06-01   to  2023-05-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    IMPERIAL COLLEGE OF SCIENCE TECHNOLOGY AND MEDICINE UK (LONDON) coordinator 1˙985˙288.00

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 Project objective

Gas turbines are an essential ingredient in the long-term energy and aviation mix. They are flexible, offer fast start-up and the ability to burn renewable-generated fuels. However, they generate NOx emissions, which cause air pollution and damage human health, and reducing these is an air quality imperative. A major hurdle to this is that lean premixed combustion, essential for further NOx emission reductions, is highly susceptible to thermoacoustic instability. This is caused by a two-way coupling between unsteady combustion and acoustic waves, and the resulting large pressure oscillations can cause severe mechanical damage. Computational methods for predicting thermoacoustic instability, fast and accurate enough to be used as part of the industrial design process, are urgently needed. The only computational methods with the prospect of being fast enough are those based on coupled treatment of the acoustic waves and unsteady combustion. These exploit the amenity of the acoustic waves to analytical modelling, allowing costly simulations to be directed only at the more complex flame. They show real promise: my group recently demonstrated the first accurate coupled predictions for lab-scale combustors. The method does not yet extend to industrial combustors, the more complex flow-fields in these rendering current acoustic models overly-simplistic. I propose to comprehensively overhaul acoustic models across the entirety of the combustor, accounting for real and important acoustic-flow interactions. These new models will offer the breakthrough prospect of extending efficient, accurate predictive capability to industrial combustors, which has a real chance of facilitating future, instability free, very low NOx gas turbines.

 Publications

year authors and title journal last update
List of publications.
2019 Xiao Han, Davide Laera, Aimee S. Morgans, Yuzhen Lin, Chi Zhang, Xin Hui, Chih-Jen Sung
Inlet temperature driven supercritical bifurcation of combustion instabilities in a lean premixed prevaporized combustor
published pages: 109857, ISSN: 0894-1777, DOI: 10.1016/j.expthermflusci.2019.109857
Experimental Thermal and Fluid Science 109 2020-01-28
2020 Xiao Han, Davide Laera, Dong Yang, Chi Zhang, Jianchen Wang, Xin Hui, Yuzhen Lin, Aimee S. Morgans, Chih-Jen Sung
Flame interactions in a stratified swirl burner: Flame stabilization, combustion instabilities and beating oscillations
published pages: 500-509, ISSN: 0010-2180, DOI: 10.1016/j.combustflame.2019.11.020
Combustion and Flame 212 2020-01-28
2019 Juan Guzmán-Iñigo, Dong Yang, Holly G. Johnson, Aimee S. Morgans
Sensitivity of the Acoustics of Short Circular Holes with Bias Flow to Inlet Edge Geometries
published pages: 4835-4844, ISSN: 0001-1452, DOI: 10.2514/1.j057996
AIAA Journal 57/11 2020-01-28

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