Improving Blowout Performance of the Conical Swirler Combustor by Employing Two Parts of Fuel at Low Operating Condition

Yixiang Yuan, Qinghua Zeng, Jun Yao, Yongjun Zhang, Mengmeng Zhao and Lu Zhao
Additional contact information
Yixiang Yuan: Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
Qinghua Zeng: Institute for Aero Engine, Tsinghua University, Beijing 100084, China
Jun Yao: Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
Yongjun Zhang: Institute for Aero Engine, Tsinghua University, Beijing 100084, China
Mengmeng Zhao: North China Institute of Aerospace Engineering, Langfang 065000, China
Lu Zhao: Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China

Energies, 2021, vol. 14, issue 6, 1-11

Abstract: Aiming at the problem of the narrow combustion stability boundary, a conical swirler was designed and constructed based on the concept of fuel distribution. The blowout performance was studied at specified low operating conditions by a combination of experimental testing and numerical simulations. Research results indicate that the technique of the fuel distribution can enhance the combustion stability and widen the boundary of flameout within the range of testing conditions. The increase of the fuel distribution ratio improves the combustion stability but leads to an increase in NOx emission simultaneously. The simulation results show the increase of the fuel distribution ratio causes contact ratio increase in the area of lower reference velocity and gas temperature increase. The increased contact ratio and temperature contribute to the blowout performance enhancement, which is identical to the analysis result of the Damkohler number. The reported work in this paper has potential application value for the development of an industrial burner and combustor with high stability and low NOx emission, especially when the combustion system is required to be stable and efficient at low working conditions.

Keywords: fuel distribution ratio; combustor; damkohler number; blowout; operating condition (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/6/1681/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/6/1681/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:6:p:1681-:d:519451

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().