| 涡轮发动机可调收扩喷管主要性能影响因素 |
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| 引用本文： | 周吉利,贾东兵,邵万仁,金文栋,杜桂贤. 涡轮发动机可调收扩喷管主要性能影响因素[J]. 航空发动机, 2013, 39(4): 56-60 |
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| 作者姓名： | 周吉利 贾东兵 邵万仁 金文栋 杜桂贤 |
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| 作者单位： | 中航工业沈阳发动机设计研究所,沈阳,110015 |
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| 基金项目： | 国家自然科学基金(50876041)；南京航空航天大学基本科研业务费专项科研项目(NS2010045)。 |
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| 摘 要： | 采用数学方法对影响收扩喷管流量系数和推力系数的因素进行了定量分析,将特定结构参数的收扩喷管流量系数转化为喷管喉道直径D8的函数,将推力系数转换为喷管喉道面积A8和喷管面积比Ar的函数,并通过数值模拟对流量系数和推力系数函数的准确性进行了校验。研究结果表明:这2个函数可以较好地反映流量系数和推力系数的变化趋势,通过对其求解可以快速得到收扩喷管在某一状态的性能参数。利用公式得到可调收扩喷管推力系数最大点出现在略欠膨胀的工作状态。
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| 关 键 词： | 可调收扩喷管 推力系数 流量系数 计算分析 涡轮发动机 |
Analysis of Main Influencing Factors on Convergent-Divergent Nozzle Performance |
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| ZHOU Ji-li,JIA Dong-bing,SHAO Wan-ren,JIN Wen-dong,DU Gui-xian. Analysis of Main Influencing Factors on Convergent-Divergent Nozzle Performance[J]. Aeroengine, 2013, 39(4): 56-60 |
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| Authors: | ZHOU Ji-li JIA Dong-bing SHAO Wan-ren JIN Wen-dong DU Gui-xian |
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| Affiliation: | AVIC Shenyang Engine Design and Research Institute, Shenyang 110015, China |
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| Abstract: | Influencing factors on flow coefficient and thrust coefficient of convergent-divergent nozzle were analyzed by mathematical method. The flow coefficient was expressed with function of the nozzle throat diameter D8, and the thrust coefficient was expressed with function of the diameter A8 and the area ratio Ar for a structural parameter. The precision of two functions was verified by simulation. The results indicate that the functions can reflected change trend of flow coefficient and thrust coefficient well. The performance parameters of convergent-divergent nozzle can be gained fast by solving the functions. The maximum point of thrust coefficient gained using the formula underexpanded condition |
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| Keywords: | convergent-divergent nozzle thrust coefficient flow coefficient calculation analysis turbine engine |
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