| 超声速二次喉道扩压器流动特性的数值模拟 |
| |
| 引用本文： | 孔令轩,宋文艳.超声速二次喉道扩压器流动特性的数值模拟[J].电子设计工程,2014(21):48-51. |
| |
| 作者姓名： | 孔令轩 宋文艳 |
| |
| 作者单位： | 西北工业大学 动力与能源学院,陕西 西安,710072 |
| |
| 摘 要： | 超声速二次喉道扩压器是超声速地面试验设备的重要部件，位于超声速风洞试验段下游，能够有效地减小气流能量损失，降低风洞运行的压比。二次喉道扩压器正常工作时，二次喉道处马赫数略大于1，在其下游不远处产生一道正激波变成亚声速流，这样当上游或下游压力出现某种波动时仍能保持稳定工作。本文使用Fluent软件对高空台-二次喉道扩压器流场进行了数值计算，较好地模拟了二次喉道扩压器内流动特性及抗反压特性，分析比较了几何参数对于风洞试验的影响。
|
| 关 键 词： | 二次喉道扩压器 风洞 激波串 数值模拟 |
Numerical study on the flow characteristics of a supersonic second-throat diffuser |
| |
| KONG Ling-xuan,SONG Wen-yan.Numerical study on the flow characteristics of a supersonic second-throat diffuser[J].Electronic Design Engineering,2014(21):48-51. |
| |
| Authors: | KONG Ling-xuan SONG Wen-yan |
| |
| Affiliation: | (School of Power and Energy, Northwestern Polytechnical University, X i ＇an 710072, China) |
| |
| Abstract: | Second-throat diffuser plays an important role in High Altitude Test facilities. It＇s generally positioned after test section. The diffuser reduces the pitot loss and decreases the wind tunnel working total pressure effectively. Mach number is close to but larger than 1 at second throat when the diffuser is operating so wind tunnel could work steadily in spite of flow fluctuation. Flow in HAT-Diffuser was approached using FLUENT software, and the influence of geometric parameter and back pressure was analysed. |
| |
| Keywords: | supersonic diffuser wind tunnel shock train numerical simulation |
| 本文献已被 维普 等数据库收录！ |
