Influence of optical window shape on aero-optic effects

zhang li; liu guodong; wang guibing

Volume 22 Issue 12

Dec. 2010

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Article Navigation > High Power Laser and Particle Beams > 2010 > 22(12): 0-

zhang zhen, cheng xiang-ai, jiang zong-fu. Excessive saturation effect of visible light CCD[J]. High Power Laser and Particle Beams, 2008, 20.

Citation:

zhang li, liu guodong, wang guibing. Influence of optical window shape on aero-optic effects[J]. High Power Laser and Particle Beams, 2010, 22.

zhang zhen, cheng xiang-ai, jiang zong-fu. Excessive saturation effect of visible light CCD[J]. High Power Laser and Particle Beams, 2008, 20.

Citation:

zhang li, liu guodong, wang guibing. Influence of optical window shape on aero-optic effects[J]. High Power Laser and Particle Beams, 2010, 22.

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Influence of optical window shape on aero-optic effects

1.
Institute of Fluid Physics,CAEP,P.O.Box 919-113,Mianyang 621900,China

Publish Date: 2010-12-07

Abstract

Abstract

This paper studies the optical aberrations in the case when the optical beam is propagating through the flow field of two optical windows with different shapes, respectively. The flow field is governed by the the 3-D Reynolds averaged Navier-Stokes (N-S) equations. To split the viscosity flux and the convective flux of the N-S equations, the second order central scheme and the ROE scheme are adopted respectively. With the implicit Gauss-Seidel scheme, the code is advanced in time. The k-ε turbulence model is used for turbulence simulations. Aero-optic effects are analyzed with the methods of geometrical optics and physical optics by introducing the mean flow and turbulence.The numerical results show that the beam quality and drag coefficient would be significantly influenced by the shape
- aero-optics,
- optical aberrations,
- optical path difference,
- strehl ratio,
- computational fluid dynamics,
- optic window

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