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前可变面积涵道引射器特性的试验与数值模拟

陈佳 胡文兵 陈晓文

陈佳, 胡文兵, 陈晓文. 前可变面积涵道引射器特性的试验与数值模拟[J]. 航空动力学报, 2020, 35(2): 263-271. doi: 10.13224/j.cnki.jasp.2020.02.005
引用本文: 陈佳, 胡文兵, 陈晓文. 前可变面积涵道引射器特性的试验与数值模拟[J]. 航空动力学报, 2020, 35(2): 263-271. doi: 10.13224/j.cnki.jasp.2020.02.005
CHEN Jia, HU Wenbing, CHEN Xiaowen. Experiment and numerical simulation on characteristic of front variable area bypass injector[J]. Journal of Aerospace Power, 2020, 35(2): 263-271. doi: 10.13224/j.cnki.jasp.2020.02.005
Citation: CHEN Jia, HU Wenbing, CHEN Xiaowen. Experiment and numerical simulation on characteristic of front variable area bypass injector[J]. Journal of Aerospace Power, 2020, 35(2): 263-271. doi: 10.13224/j.cnki.jasp.2020.02.005

前可变面积涵道引射器特性的试验与数值模拟

doi: 10.13224/j.cnki.jasp.2020.02.005

Experiment and numerical simulation on characteristic of front variable area bypass injector

  • 摘要: 为了研究主、次流的进口总压比及出口背压对前可变面积涵道引射器(FVABI)工作特性的影响与流动掺混机理,采用试验与三维数值模拟方法对不同进口总压比下引射器工作性能及掺混流场随背压变化规律进行了分析。结果表明:标准k -ε模型用于引射器掺混流场的模拟具有较好的准确性;进口总压比越大,引射器总压损失越大;进口总压比不变,随背压增加,引射器总压损失先减小后增加;进口总压比不变,引射器在背压变化过程中存在总压损失最小点;背压减小时,引射器存在临界工况点,且进口总压比越大达到临界工况点的背压越大,可变涵道比的范围变窄;主、次流掺混过程主要集中在沿气流方向上x/l=03~06位置之间,在黏性力作用下动量、质量充分交换,沿流向截面速度径向分布趋于均匀。

     

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出版历程
  • 收稿日期:  2019-10-16
  • 刊出日期:  2020-02-28

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