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Calculation of Wall Temperature for

時間:2023-04-30 03:30:59 航空航天論文 我要投稿
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Calculation of Wall Temperature for Aircraft Exhaust System with Considering Gas Radiation Heat Transfer

The coupled numerical simulation of flow field, solid temperature field, species concentration field and gas radiation transfer/ energy field based on statistical narrow-band correlated-k (SNBCK) model, is employed to accurately predict aerothermody-namic characteristic of aircraft exhaust system. A series of methods to increase computational efficiency and descend computa-tional resources make it possible to finish the calculation in PC. The parameters of narrow-band model are evaluated by HITEMP line-by-line database. Three examples have proved the accuracy of using these methods to solve flow heat transfer coupled problem and radiation transfer/energy equation, which are the calculation of temperature distribution of water-cooling nozzle in rocket engine, the calculation of carbon dioxide absorptivity at 4.3 micron band, and the gas radiation heat transfer evaluation of the cylindrical furnace. Finally, the inner flaps temperature distribution of ejecting nozzle with floating outer flaps is computed, under high-altitude, high-speed and afterburning conditions. Two completely different air-inlet schemes of ejecting channel almost achieve the same effect in cooling inner flaps.

作 者: Hu Haiyang Wang Qiang   作者單位: School of Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China  刊 名: 中國航空學報(英文版)  ISTIC 英文刊名: CHINESE JOURNAL OF AERONAUTICS  年,卷(期): 2009 22(6)  分類號: V2  關鍵詞: numerical simulation   gas radiation   exhausting nozzles   coupled model   statistical narrow-band eorrelated-k model  

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