Development of anti-coking thermal management technologies for a coaxially-staged lean-burn fuel injector for high-pressure-ratio aero-engines.: First report: Evaluation of thermal protection performance and validation of numerical analysis by experiments in realistic environments.

• Material Type: 規格・テクニカルリポート類
• Title: Development of anti-coking thermal management technologies for a coaxially-staged lean-burn fuel injector for high-pressure-ratio aero-engines.: First report: Evaluation of thermal protection performance and validation of numerical analysis by experiments in realistic environments.
• Author/Editor: 松浦, 一哲; 山本, 武
• Author Heading: 松浦, 一哲; 山本, 武
• Publication, Distribution, etc.: Japan Aerospace Exploration Agency (JAXA)
• Publication Date: 2025-02-27
• Publication Date (W3CDTF): 2025-02-27
• Periodical title: JAXA Research and Development Memorandum
• No. or year of volume/issue: JAXA-RM-24-008E
• Volume: JAXA-RM-24-008E
• ISSN (Periodical Title): EISSN : 2433-2224
• Text Language Code: eng
• Subject Heading: Fuel injector design; Lean staged combustor; Injector thermal management; Fuel coking; Thermal oxidation; Aero-engines; Large eddy simulation; Additive manufacturing
• Target Audience: 一般
• Note (General): 出版タイプ： VoR; A coaxially-staged lean-burn fuel injector for aero-engines was developed, which was equipped with anti-coking thermal management function. Solid/fluid conjugate heat transfer numerical simulations were performed to evaluate its thermal protection performance. It was shown that the injector of the current design satisfied our criterion, that is, the wet-wall temperatures of its fuel circuits were below 478K, except the regions close to its injection exits. Experiments were also conducted to evaluate the validity of the simulations. At the probe locations where the temperatures were measured, the results of them by the simulations and by the experiments were in good agreement, showing reliability of the simulations for the evaluation of injector performance. In this first report, the main contents are descriptions of numerical/experimental procedures and the results for the injector with one of successful designs in terms of thermal protection. The concept of thermal management design of the injector and its manufacturing process including additive manufacturing are also mentioned briefly.; Physical characteristics: Original contains color illustrations; 形態: カラー図版あり; レポート番号: JAXA-RM-24-008E
• DOI: 10.20637/0002001693; https://doi.org/10.20637/0002001693
• Access Restrictions: インターネット公開
• Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• Original Data Provider (Database): 宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ