A computer model for the simulation of turbulent reacting flow in a jet assisted ram combustor

• Material Type: 規格・テクニカルリポート類
• Title: A computer model for the simulation of turbulent reacting flow in a jet assisted ram combustor
• Author/Editor: Kumar, S.; Kumar, Sanjiv
• Author Heading: Kumar, S.; Kumar, Sanjiv
• Publication, Distribution, etc.: 航空宇宙技術研究所
• Publication Date: 1995-05
• Publication Date (W3CDTF): 1995-05
• Alternative Title: ジェット支援ラム燃焼器内の乱流反応流のシミュレーションのためのコンピューターモデル
• Periodical title: 航空宇宙技術研究所報告
• No. or year of volume/issue: 1267T
• Volume: 1267T
• Pages: 1-22
• ISSN (Periodical Title): ISSN : 0389-4010
• Text Language Code: eng
• Subject Heading: 乱流; 乱流燃焼; ラム燃焼器; ジェット安定化焔; コンピュータモデル; 伸長層流火炎片モデル; ナビエストークス式; レイノルズ数; 水素; 空気; 確率密度関数; 熱化学量; 連続方程式; 運動方程式; アルゴリズム; turbulent flow; turbulent combustion; RAM combustor; jet stabilized flame; computer model; stretched laminar flamelet model; Navier Stokes equation; Reynolds number; hydrogen; air; probability density function; thermochemical variable; continuity equation; momentum equation; algorithm
• Target Audience: 一般
• Note (General): A computer code for the simulation of the turbulent reacting flow in a jet assisted ram combustor is developed. Favre averaged Continuity and Navier-Stokes equations, equations for a low Reynolds number kappa-epsilon model and equations for mixture fraction and its variance are solved to simulate the turbulent reacting flow. A Stretched Laminar Flamelet Model (SLFM) in the mixture fraction space is used to simulate the combustion of Hydrogen and Air using a 28-step reaction mechanism with 10 species. The SLFM is coupled to the turbulent flow through density which is calculated using an assumed beta-shaped probability distribution function for mixture fraction and a log-normal probability distribution function for the scalar dissipation. All other mass averaged thermochemical variables are computed off-line after a converged solution has been achieved. Solution of the continuity equation and the three momentum equations is achieved using the SIMPLER algorithm. The linearized system of equations for each variable is solved sequentially using a incomplete lower upper preconditioned conjugate gradient method. Simulation results showing the recirculation zones, distribution of species and temperature are presented.; 資料番号: AA0004272000; レポート番号: NAL TR-1267T
• 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

• Summary, etc.: 噴流保炎型ラム燃焼器の中の乱流火炎を、10個の化学種、28ステップの反応式を用いた伸長層流火炎片モデルで模擬した。連続、運動量、混合分率およびその変動などの3次元支配方程式に質量加重平均を適用した。乱れは低レイノルズ数κ-εモデルにより模擬し、やはり質量加重平均を用いた。熱化学量を計算するために推定...