Models of turbulence for aero-optics applications

Offer Pade

doi:10.1117/12.437183

14 August 2001 Models of turbulence for aero-optics applications

Offer Pade

Proceedings Volume 4419, 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications; (2001) https://doi.org/10.1117/12.437183
Event: IV Iberoamerican Meeting of Optics and the VII Latin American Meeting of Optics, Lasers and Their Applications, 2001, Tandil, Argentina

Abstract

Turbulence models of density are needed for predicting the performance of airborne optical systems. The existing CFD codes model velocity fluctuations. To avoid rewriting large CFD codes, there is a need for simple yet accurate models, which will be based on the result of standard CFD codes. The applicability of these models to Aero-Optics problems is done by using the relation between the variance of density fluctuation to the optical distortion. The algebraic model that we present here gives good agreement with experimental result for Mach number as high as 9. We also presents models that can be implemented into existing CFD codes by using the result of regular two-equations turbulence models and compare the result to those obtained using CFD results and airborne experiments. We calculated the effects of turbulent fluctuations on optical systems.

Citation Download Citation

Offer Pade "Models of turbulence for aero-optics applications", Proc. SPIE 4419, 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications, (14 August 2001); https://doi.org/10.1117/12.437183

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