@inproceedings{
 title = {High fidelity aero-optical analysis},
 type = {inproceedings},
 year = {2010},
 websites = {https://arc.aiaa.org/doi/abs/10.2514/6.2010-433},
 publisher = {American Institute of Aeronautics and Astronautics Inc.},
 id = {dcc2c880-74d8-3278-be4e-b01d336e1bc6},
 created = {2021-07-12T04:45:02.941Z},
 accessed = {2021-07-11},
 file_attached = {true},
 profile_id = {6476e386-2170-33cc-8f65-4c12ee0052f0},
 group_id = {5a9f751c-3662-3c8e-b55d-a8b85890ce20},
 last_modified = {2021-07-12T04:46:00.780Z},
 read = {false},
 starred = {false},
 authored = {false},
 confirmed = {false},
 hidden = {false},
 citation_key = {white:scitech:2010},
 private_publication = {false},
 abstract = {High-order compact difference methods utilizing implicit Large Eddy Simulation (ILES) and hybrid Reynolds averaged Navier-Stokes (RANS)/ILES are utilized to compute compressible shear layers and flow over a conformal turret in order to examine aero-optical aberrations. The optics are computed with both a high-order parabolic beam solver and traditional aero-optics. The effect of aperture size on the OPDrms is investigated. In the ILES simulation of forced shear layers, it is seen that tip and tilt dominate in the flow structures across all apertures. When the flow is corrected for tip/tilt, the apparent OPD can change dramatically and may give misleading results in terms of structure identification. The results also demonstrate how different density flows can give very similar looking OPD values. The hybrid RANS/ILES turret results also show how aperture sizes can affect the OPDrms. The current calculations do not appear to agree with the tip/tilt corrected rootmean- square of the experiments. However, uncorrected wavefronts do show similar trends to the experimental results. This may point to potential limitations of hybrid approaches due to the lack of large scale structures in the area where RANS is active. © 2010 by the American Institute of Aeronautics and Astronautics, Inc.},
 bibtype = {inproceedings},
 author = {White, Michael D. and Morgan, Philip E. and Visbal, Miguel R.},
 doi = {10.2514/6.2010-433},
 booktitle = {48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition}
}

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The optics are computed with both a high-order parabolic beam solver and traditional aero-optics. The effect of aperture size on the OPDrms is investigated. In the ILES simulation of forced shear layers, it is seen that tip and tilt dominate in the flow structures across all apertures. When the flow is corrected for tip/tilt, the apparent OPD can change dramatically and may give misleading results in terms of structure identification. The results also demonstrate how different density flows can give very similar looking OPD values. The hybrid RANS/ILES turret results also show how aperture sizes can affect the OPDrms. The current calculations do not appear to agree with the tip/tilt corrected rootmean- square of the experiments. However, uncorrected wavefronts do show similar trends to the experimental results. 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