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反压气流温度及传热对隔离段激波串的影响
引用本文:杜泉,宋文艳,李强,郑亚明.反压气流温度及传热对隔离段激波串的影响[J].计算机仿真,2008,25(9).
作者姓名:杜泉  宋文艳  李强  郑亚明
作者单位:西北工业大学动力与能源学院,陕西西安,710072
摘    要:隔离段出口反压,气流温度和传热都影响激波串的位置,长度和隔离段的性能.采用实验方法和数值方法对均匀来流情况下具有不同隔离段长度的超燃冲压发动机燃烧室内流动进行了研究.分析了隔离段的下游反压前传模式和反压对隔离段激波串的影响;用数值方法研究了温度和传热对激波串及隔离段性能的影响.结果表明:隔离段越长,激波承受能力越强,极限反压越大;对超音速气流加入热量能够增加附面层厚度,减小气流马赫数.降低隔离段的抗反压能力;高温气流产生的激波串长度相对较长,因此需要更长的隔离段来防止发动机不启动.

关 键 词:隔离段  传热  激波串  附面层

Effects of Back Pressure,Temperature and Heat Transfer on Shock Train Structures inside the Isolators
DU Quan,SONG Wen-yang,LI Qiang,Zheng Ya-ming.Effects of Back Pressure,Temperature and Heat Transfer on Shock Train Structures inside the Isolators[J].Computer Simulation,2008,25(9).
Authors:DU Quan  SONG Wen-yang  LI Qiang  Zheng Ya-ming
Affiliation:DU Quan,SONG Wen-yang,LI Qiang,Zheng Ya-ming(School of Engine , Energy,Northwestern Polytechnical University,Xi'an Shanxi 710072,China)
Abstract:The performance of the isolator and the length and the location of the shock train are influenced by back pressure,temperature and heat transfer.The effects of back pressure on shock train structures and isolator performance are investigated both experimentally and numerically,the spread mode of back pressure and the influence of the shock train structure are analysed,and the effects of temperature and heat transfer on shock train structures and isolator performance are investigated numerically.Important as...
Keywords:Isolator  Heat transfer  Shock train  Boundary layer  
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