Numerical investigation on image degradation caused by aero-optical effects of the supersonic mixing layer

2020 ◽  
Vol 59 (35) ◽  
pp. 11059
Author(s):  
Guangming Guo ◽  
Xiaojian Tong ◽  
Qin Luo
Keyword(s):  
Numerical Investigation ◽  
Mixing Layer ◽  
Image Degradation ◽  
Supersonic Mixing ◽  
Optical Effects ◽  
Supersonic Mixing Layer

Aero-Optical Effects of Mc=0.5 Supersonic Mixing Layer

2014 ◽  
Vol 989-994 ◽  
pp. 863-866
Author(s):  
Li Feng Tian ◽  
Shi He Yi ◽  
Yang Zhu Zhu ◽  
Yu Xin Zhao ◽  
Lin He
Keyword(s):  
Large Scale ◽  
Near Field ◽  
Mixing Layer ◽  
Wavefront Aberration ◽  
Spatiotemporal Resolution ◽  
Large Scale Structures ◽  
Supersonic Mixing ◽  
Optical Effects ◽  
Supersonic Mixing Layer ◽  
Scale Structures

Supersonic turbulent mixing layer requires high spatiotemporal resolution of measuring techniques to study its aero-optical effects. However, the spatiotemporal resolution of existing techniques is not high enough. NPLS-WT (NPLS based wavefront technique) is a new aero-optics measuring technique developed in 2010. Its time resolution is 6ns, and spatial resolution and time correction resolution can reach up to micrometers and 200ns respectively. NPLS-WT was used in this paper to study aero-optical effects induced by Mc=0.5 supersonic mixing layer. The fine wavefront aberration information is revealed by the OPD of high resolution. The results show that the wavefront in near field is not sensitive to the resolution, and large-scale structures play a dominant role on the wavefront in near field. The cumulative effects analysis show us that the density difference between large-scale structures and free stream is the main reason to wavefront aberration, and the larger the vortex is, the more obvious the effect to wavefront aberration is.

A review on enhanced mixing methods in supersonic mixing layer flows

2018 ◽  
Vol 152 ◽  
pp. 310-324 ◽  
Author(s):  
Jianguo Tan ◽  
Dongdong Zhang ◽  
Liang Lv
Keyword(s):  
Mixing Layer ◽  
Supersonic Mixing ◽  
Supersonic Mixing Layer ◽  
Mixing Layer Flows

A thermo-chemical exploration of a two-dimensional reacting supersonic mixing layer

1997 ◽  
Vol 9 (11) ◽  
pp. 3513-3522 ◽  
Author(s):  
Debasis Chakraborty ◽  
H. V. Nagaraj Upadhyaya ◽  
P. J. Paul ◽  
H. S. Mukunda
Keyword(s):  
Mixing Layer ◽  
Two Dimensional ◽  
Supersonic Mixing ◽  
Supersonic Mixing Layer

Effects of sidewall disturbances on the supersonic mixing layer

1992 ◽  
Vol 8 (1) ◽  
pp. 249-251 ◽  
Author(s):  
N. T. Clemens ◽  
M. G. Mungal
Keyword(s):  
Mixing Layer ◽  
Supersonic Mixing ◽  
Supersonic Mixing Layer
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