Vol. 30, issue 07, article # 5

Abstract:

Results of the analysis of the mean intensity, intensity fluctuations, and regular and random wandering of optical beams propagating through the high-density area, which is formed due to subsonic airflow about a turret, in a turbulent atmosphere, are described. It is shown that the presence of perturbations around the turret caused by aircraft subsonic movements has a little impact on beam parameter. Quantitative data, which illustrate changes in the beam parameters along paths of different geometry versus turbulent conditions of light propagation, are presented and discussed.

Keywords:

turret, mean intensity, turbulence, variance of intensity fluctuations

References:

1. Frumker E., Pade O. Generic method for aero-optic evaluations // Appl. Opt. 2004. V. 43, N 16. P. 3224–3228.
2. Pade O. Propagation through shear layers // Proc. SPIE. 2006. V. 6364. P. 63640E.
3. Volkov K.N., Emel'janov V.N. Ajeroopticheskie jeffekty v turbulentnom potoke i ih modelirovanie // Zh. tehn. fiz. 2008. V. 78, Issue 2. P. 77–82.
4. Henriksson M., Sjöqvist L., Parmhed O., Fureby C. Numerical laser beam propagation using large eddy simulation of a jet engine flow field // Opt. Eng. 2015. V. 54, N 8. P. 085101. DOI: 10.1117/1.OE.54.8.085101.
5. Bo L., Hong L. Aero-optical characteristics of supersonic flow over Blunt Wedge with cavity window // J. Shanghai Jiaotong Univ. 2011. V. 16, N 6. P. 742–749.
6. Xu L., Cai Y. Influence of altitude on aero-optic imaging deviation // Appl. Opt. 2011. V. 50, N 18. P. 2949–2957.
7. Wang M., Mani A., Gordeev S. Physics and computation of aero-optics // Annu. Rev. Fluid Mech. 2012. V. 44. P. 299–321.
8. Gao Q., Yi S.H., Jiang Z.F., He L., Zhao Y.X. Hierarchical structure of the optical path length of the supersonic turbulent boundary layer // Opt. Express. 2012. V. 20, iss. 15. P. 16494–16503.
9. Banah V.A., Suharev A.A., Falic A.V. Difrakcija opticheskogo puchka na udarnoj volne, voznikajushhej vblizi sverhzvukovogo letatel'nogo apparata // Optika atmosf. i okeana. 2013. V. 26, N 11. P. 932–941.
10. Banakh V.A., Sukharev A.A., Falits A.V. Optical beam distortions induced by a shock wave // Appl. Opt. 2015. V. 54, N 8. P. 2023–2031.
11. Banah V.A., Suharev A.A., Falic A.V. Projavlenie ajeroopticheskih jeffektov v turbulentnoj atmosfere pri sverhzvukovom dvizhenii konusoobraznogo tela // Optika atmosf. i okeana. 2014. V. 27, N 8. P. 679–688; Banakh V.A., Sukharev A.A., Falits A.V. Manifestation of aero-optical effects in a turbulent atmosphere in supersonic motion of a conical body // Atmos. Ocean. Opt. 2015. V. 28, N 1. P. 24–33.
12. Banah V.A., Suharev A.A. Iskazhenija lazernyh puchkov, vyzyvaemye udarnoj volnoj vblizi tureli sverhzvukovogo letatel'nogo apparata // Optika atmosf. i okeana. 2016. V. 29, N 1. P. 14–22; Banakh V.A., Sukharev A.A. Laser beam distortions caused by a shock wave near the turret of a supersonic aircraft // Atmos. Ocean. Opt. 2016. V. 29, N 3. P. 225–233.
13. Banah V.A., Suharev A.A. Vklad atmosfernoj turbulentnosti v iskazhenija lazernyh puchkov, vyzyvaemye udarnoj volnoj, formirujushhejsja pri sverhzvukovom obtekanii tureli // Optika atmosf. i okeana. 2016. V. 29, N 4. P. 257–262.
14. Gurvich A.S., Gracheva M.E. Prostaja model' dlja rascheta turbulentnyh pomeh v opticheskih sistemah // Izv. AN SSSR. Fiz. atmosf. i okeana. 1980. V. 16, N 10. P. 1107–1111.
15. Zuev V.E., Banah V.A., Pokasov V.V. Optika turbulentnoj atmosfery. Sovremennye problemy atmosfernoj optiki. L.: Gidrometeoizdat, 1988. V. 5. 270 p.
16. Kandidov V.P. Metod Monte-Karlo v nelinejnoj statisticheskoj optike // Uspehi fiz. nauk. 1996. V. 166, N 12. P. 1309–1338.
17. Tatarskij V.I. Rasprostranenie lazernogo izluchenija v atmosfere. M.: Nauka. 1967. 548 p.
18. Gurvich A.S., Kon A.I., Mironov V.L., Hmelevcov S.S. Lazernoe izluchenie v turbulentnoj atmosfere. M.: Nauka, 1976. 280 p.
19. Wilcox D.C. Turbulence modeling for CFD. La Canada, California: DCW Industries, 2006. 522 p.
20. Banah V.A., Marakasov D.A., Suharev A.A. Vosstanovlenie strukturnoj harakteristiki pokazatelja prelomlenija i srednej plotnosti vozduha v udarnoj volne, voznikajushhej pri sverhzvukovom obtekanii prepjatstvij, iz opticheskih izmerenij // Optika i  spektroskopija. 2011. V. 111, N 6. P. 1032–1037.
21. Wang K., Wang M. Aero-optics of subsonic turbulent boundary layers // J. Fluid Mech. 2012. V. 696. P. 122–151.
22. Gao Q., Yi S.H., Jiang Z.F., He L., Wang Xi. Structure of the refractive index distribution of the supersonic turbulent boundary layer // Opt. Lasers Eng. 2013. V. 51, N 9. P. 1113–1119.
23. Rytov S.M., Kravcov O.A., Tatarskij V.I. Vvedenie v statisticheskuju radiofiziku. Part 2: Sluchajnye polja. M.: Nauka, 1978. 463 p.