Experimental and numerical analysis of turbulent pulverized coal flame in a coaxial burner

Seongyool Ahn, Kazuki Tainaka, Hiroaki Watanabe, Toshiaki Kitagawa

研究成果: ジャーナルへの寄稿学術誌査読

9 被引用数 (Scopus)

抄録

A hydrogen supported turbulent pulverized coal combustion flame was investigated experimentally and numerically to analyze combustion characteristics and flame structure. The flame was experimentally investigated by direct measurement methods and non-intrusive optical diagnostic methods. Temperature of gaseous phase was observed by a sheathed thermo-couple, while gas composition was examined by a gas analyzer with a sampling probe. Particle dispersion characteristics and velocity were analyzed by Mie scattering and PIV techniques using an optical measurement system. A numerical analysis was simultaneously performed to investigate the flame in detail by means of LES. The simulation was validated by comparing gaseous temperature, velocity and composition results to the experiment. The issued pulverized coal particles were distributed in limited area even in downstream by forming linear shape of flame. The particles moved by forming a cloud in the flame in upstream, but the cloud was broken up in downstream when it passed the flame surface. The characteristics of particle movement and influence of combustion were discussed with the analyses of particle velocity and momentum transfer. The flame structure was discussed with the results of gaseous mole fraction, and NOx formation was numerically investigated in this study.

本文言語英語
ページ(範囲)727-735
ページ数9
ジャーナルEnergy
179
DOI
出版ステータス出版済み - 7月 15 2019

All Science Journal Classification (ASJC) codes

  • 土木構造工学
  • 建築および建設
  • 汚染
  • 機械工学
  • 産業および生産工学
  • 電子工学および電気工学

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