Aero-optic analysis of anisotropic turbulent boundary layer by direct integration

S. Taylor; J. Price; C. P. Chen; John E. Pond; G. W. Sutton

doi:10.1117/12.2025408

17 September 2013 Aero-optic analysis of anisotropic turbulent boundary layer by direct integration

S. Taylor, J. Price, C. P. Chen, John E. Pond, G. W. Sutton

Proceedings Volume 8877, Unconventional Imaging and Wavefront Sensing 2013; 887705 (2013) https://doi.org/10.1117/12.2025408
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

Aero-optic aberrations that effect optical sensor performance and laser beam propagation, can be caused by changes in the index-of-refraction field as the optical wave traverses a compressible non-uniform, turbulent flowfield. Mean flowfield non-uniformities cause bore sight error and blurring and, if the mean flowfield is unsteady, jitter. Turbulence causes blurring and high frequency jitter. Blurring also causes the signal-to-noise ratio to decrease and image distortion, and adversely affects centroid location for precision tracking. The objective of this study is to develop an unified approach for whole-field aero-optics prediction using hybrid LES/RANS (Large Eddy Simulation/Reynolds Average Navier-Stokes) turbulence modeling in combination with a newly formulated optical Modulation Transfer Function (MTF). The whole field turbulence includes the near-vehicle boundary layer mean and turbulence, as well as far-field atmospheric turbulence. A flat plate compressible boundary layer case is used to demonstrate the methodology. the abstract two lines below author names and addresses.

Citation Download Citation

S. Taylor, J. Price, C. P. Chen, John E. Pond, and G. W. Sutton "Aero-optic analysis of anisotropic turbulent boundary layer by direct integration", Proc. SPIE 8877, Unconventional Imaging and Wavefront Sensing 2013, 887705 (17 September 2013); https://doi.org/10.1117/12.2025408

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available