直接数値計算に基づく矩形旋回型乱流燃焼器内の熱音響モードに関する研究

DOI Web Site

書誌事項

タイトル別名
  • DNS Study on Thermo-Acoustic Modes in a Cuboid Turbulent Swirl Combustor
  • チョクセツ スウチ ケイサン ニ モトズク クケイ センカイガタ ランリュウ ネンショウキ ナイ ノ ネツ オンキョウ モード ニ カンスル ケンキュウ

この論文をさがす

抄録

<p>This article introduces a research on thermoacoustic instability based on direct numerical simulation (DNS) of a hydrogen-air turbulent swirling premixed flame in a cuboid combustor. To investigate thermoacoustic instability and dynamic modes of a turbulent swirling premixed flame, dynamic mode decomposition (DMD) and spectral analysis are applied to results of the DNS. DMD of pressure field shows that the quarter-wave mode in longitudinal acoustics has the largest energy, while DMD of heat release rate field reveals that the quarter-wave mode in longitudinal acoustics is not a dominant mode in heat release rate field. It has found that oscillation modes caused by large scale vortical motions have large energy not only in pressure field but also in heat release rate field. Dynamic modes of the source term of classical acoustic energy equation are also discussed with the vortical motion and the resonance mode of the combustor.</p>

収録刊行物

  • 日本燃焼学会誌

    日本燃焼学会誌 59 (187), 16-23, 2017

    一般社団法人 日本燃焼学会

関連プロジェクト

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ