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计及壁面传热的微型向心涡轮气动设计探讨

DOI: 10.13700/j.bh.1001-5965.2013.0490, PP. 947-952

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Abstract:

毫米级微型向心涡轮传热效应显著区别于常规向心涡轮,发展计及壁面传热效应的微型向心涡轮的气动设计方法对微型燃气轮机的设计具有重要意义.根据微型向心涡轮壁面非绝热的特点,通过理论分析,初步建立了计及固壁传热效应的微型向心涡轮速度三角形的分析模型.在此基础上发展了计及传热效应的微型向心涡轮的气动设计方法.分析得到了考虑传热影响的微型向心涡轮设计规律.利用三维数值模拟手段对模型和设计方法进行了验证.结果初步表明所发展计及壁面传热效应的模型和微型向心涡轮气动设计方法具有较好的可行性.

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