Shi Ketian, Ma Handong. Prediction of aero-optical effects in turbulence based on the sphere vortex model[J]. Infrared and Laser Engineering, 2012, 41(6): 1401-1404.
| Citation:
|
Shi Ketian, Ma Handong. Prediction of aero-optical effects in turbulence based on the sphere vortex model[J]. Infrared and Laser Engineering, 2012, 41(6): 1401-1404.
|
Prediction of aero-optical effects in turbulence based on the sphere vortex model
-
Abstract
Abstract: For the prediction of aero-optical effects in engineering application, the influence of turbulent vortex structure on optical transmission cannot be simulated because RANS method does not provide details of the turbulent vortex structure. A random phase screen method based on the sphere vortex model was improved, which uses sphere with different diameter and density to simulate the instantaneous vortex. The improvement connects the sphere parameters with the local characteristic of the flow fields. For example, the sphere diameter is determined by the correlation scale and the sphere density is determined by the root mean square of the flow density. The simulations of the image distortion in the compressible shear layers show that the improved random screen method is in line with the results from direct integration of the intensity and the accuracy is much higher than the original method.
-
References
|
[1]
|
|
|
[2]
|
Sutton G W. Aero?鄄optical foundations and applications[J].AIAA J, 1985, 23(10): 1525-1537. |
|
[3]
|
|
|
[4]
|
Fei Jindong. Study on aero?鄄optical effect technology for high speed missile infrared image guide[J]. Infrared and laser Engineering, 1998, 27(1): 42-44. (in Chinese) |
|
[5]
|
|
|
[6]
|
Tsai Y P, Christiansen W H. Two?鄄dimensional numerical simulation of shear layer optics[J]. AIAA J, 1990, 28(12): 2092-2097. |
|
[7]
|
Shi Ketian, Ma Handong. Aero?鄄optical effects in compressible mixing layers[J]. Chinese Journal of Computational Physics, 2010, 27(1): 65-72. (in Chinese) |
|
[8]
|
|
|
[9]
|
Trolinger J D, Weber D. An aero?鄄optical test and diagnostics simulation technique [R]. AIAA Paper 2002-0825. |
|
[10]
|
|
|
[11]
|
|
|
[12]
|
Trolinger J D, Rose W C. Technique for simulating and evaluating aero?鄄optical effects in optical systems[R]. AIAA Paper 2004-471. |
|
[13]
|
Sandham N D, Reynolds W C. Three?鄄dimensional simulations of large eddies in the compressible mixing layer[J]. J Fluid Mech, 1991, 244: 133-158. |
|
[14]
|
|
|
[15]
|
|
|
[16]
|
Wu Lin, Fang Jiancheng, Yang Zhaohua. Analysis of influence parameters of aero?鄄optical effects based on turbulence vortex model[J]. Infrared and Laser Engineering, 2007, 36(1): 97-101. (in Chinese) |
|
[17]
|
Chen Cheng, Fei Jindong. Numerical simulation on the optical transmission distortions throughout the laminar flow field [J]. Infrared and Laser Engineering, 2005, 34(5): 548-552. (in Chinese) |
-
-
Proportional views
-
DownLoad: