| 动态纹影-光子相关测量技术在超音速剪切流中的应用 |
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| 引用本文： | 徐力平.动态纹影-光子相关测量技术在超音速剪切流中的应用[J].航空学报,1989,10(2):44-51. |
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| 作者姓名： | 徐力平 |
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| 作者单位： | 北京航空航天大学 |
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| 摘 要： | 对一个分离后的二维超音速剪切流进行动态纹影——光子相关测量,得到了剪切层中大尺度涡的迁移速度以及由大尺度涡流诱导的剪切层自维持振荡频率。同时由光子相关测量可以估算剪切层中紊流动能的分布。发现了高速剪切层中大涡结构的某些特殊性质。结果表明这一测量方法在复杂高速流动的测量中具有潜在的优势。
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| 关 键 词： | 幻影仪 相关技术 超音流 紊流剪切流 |
| 收稿时间： | 1987-10-21; |
THE APPLICATION OF DYNAMIC SCHLIEREN-PHOTON CORRELATION TECHNIQUE TO A SUPERSONIC SHEAR LAYER |
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| Beijing University of Aeronautics and Astronautics Xu Liping.THE APPLICATION OF DYNAMIC SCHLIEREN-PHOTON CORRELATION TECHNIQUE TO A SUPERSONIC SHEAR LAYER[J].Acta Aeronautica et Astronautica Sinica,1989,10(2):44-51. |
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| Authors: | Beijing University of Aeronautics and Astronautics Xu Liping |
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| Institution: | Beijing University of Aeronautics and Astronautics Xu Liping |
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| Abstract: | By applying the dynamic schlilieren photon correlation technique to a two dimensional separated supersonic, chear layar, the convection velocity of large eddies inside the shear layer and the frequency o! the self-sustaining oscillation of the shear layer induced by the shedding of large eddies have been obtained The distribution of the turbulence in-tenaity inside the chear layer can also be estimated.It has been observed that the large eddies in a high sptcd shear layer posses; some special features.It is shown tha t the method has its promising potential in the measurement of high speed complex flows. |
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| Keywords: | schlieren correlation techniques supersoic flow turbulent shear flow |
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