id sid tid token lemma pos j098z89308t 1 1 hemispherical hemispherical ADJ j098z89308t 1 2 turrets turret NOUN j098z89308t 1 3 are be AUX j098z89308t 1 4 frequently frequently ADV j098z89308t 1 5 employed employ VERB j098z89308t 1 6 on on ADP j098z89308t 1 7 airborne airborne ADJ j098z89308t 1 8 aircraft aircraft NOUN j098z89308t 1 9 for for ADP j098z89308t 1 10 laser laser NOUN j098z89308t 1 11 communication communication NOUN j098z89308t 1 12 and and CCONJ j098z89308t 1 13 targeting targeting NOUN j098z89308t 1 14 . . PUNCT j098z89308t 2 1 however however ADV j098z89308t 2 2 , , PUNCT j098z89308t 2 3 the the DET j098z89308t 2 4 unsteady unsteady ADJ j098z89308t 2 5 compressible compressible ADJ j098z89308t 2 6 turbulent turbulent ADJ j098z89308t 2 7 flow flow NOUN j098z89308t 2 8 around around ADP j098z89308t 2 9 such such DET j098z89308t 2 10 a a DET j098z89308t 2 11 turret turret NOUN j098z89308t 2 12 causes cause VERB j098z89308t 2 13 aberrations aberration NOUN j098z89308t 2 14 in in ADP j098z89308t 2 15 the the DET j098z89308t 2 16 optical optical ADJ j098z89308t 2 17 wavefront wavefront NOUN j098z89308t 2 18 which which PRON j098z89308t 2 19 degrades degrade VERB j098z89308t 2 20 the the DET j098z89308t 2 21 performance performance NOUN j098z89308t 2 22 of of ADP j098z89308t 2 23 the the DET j098z89308t 2 24 system system NOUN j098z89308t 2 25 . . PUNCT j098z89308t 3 1 to to PART j098z89308t 3 2 overcome overcome VERB j098z89308t 3 3 this this DET j098z89308t 3 4 limitation limitation NOUN j098z89308t 3 5 it it PRON j098z89308t 3 6 is be AUX j098z89308t 3 7 necessary necessary ADJ j098z89308t 3 8 to to PART j098z89308t 3 9 have have VERB j098z89308t 3 10 a a DET j098z89308t 3 11 deep deep ADJ j098z89308t 3 12 understanding understanding NOUN j098z89308t 3 13 of of ADP j098z89308t 3 14 the the DET j098z89308t 3 15 flow flow NOUN j098z89308t 3 16 and and CCONJ j098z89308t 3 17 optical optical ADJ j098z89308t 3 18 environments environment NOUN j098z89308t 3 19 around around ADP j098z89308t 3 20 the the DET j098z89308t 3 21 turret turret NOUN j098z89308t 3 22 , , PUNCT j098z89308t 3 23 which which PRON j098z89308t 3 24 are be AUX j098z89308t 3 25 very very ADV j098z89308t 3 26 challenging challenging ADJ j098z89308t 3 27 to to PART j098z89308t 3 28 study study VERB j098z89308t 3 29 both both PRON j098z89308t 3 30 experimentally experimentally ADV j098z89308t 3 31 and and CCONJ j098z89308t 3 32 numerically numerically ADV j098z89308t 3 33 . . PUNCT j098z89308t 4 1 this this DET j098z89308t 4 2 thesis thesis NOUN j098z89308t 4 3 describes describe VERB j098z89308t 4 4 numerical numerical ADJ j098z89308t 4 5 study study NOUN j098z89308t 4 6 of of ADP j098z89308t 4 7 this this DET j098z89308t 4 8 problem problem NOUN j098z89308t 4 9 using use VERB j098z89308t 4 10 advanced advanced ADJ j098z89308t 4 11 numerical numerical ADJ j098z89308t 4 12 techniques technique NOUN j098z89308t 4 13 and and CCONJ j098z89308t 4 14 high high ADJ j098z89308t 4 15 performance performance NOUN j098z89308t 4 16 computers computer NOUN j098z89308t 4 17 of of ADP j098z89308t 4 18 the the DET j098z89308t 4 19 present present ADJ j098z89308t 4 20 days day NOUN j098z89308t 4 21 . . PUNCT j098z89308t 5 1 two two NUM j098z89308t 5 2 hemisphere hemisphere NOUN j098z89308t 5 3 - - PUNCT j098z89308t 5 4 on on ADP j098z89308t 5 5 - - PUNCT j098z89308t 5 6 cylinder cylinder NOUN j098z89308t 5 7 turrets turret NOUN j098z89308t 5 8 , , PUNCT j098z89308t 5 9 with with ADP j098z89308t 5 10 base base NOUN j098z89308t 5 11 - - PUNCT j098z89308t 5 12 height height NOUN j098z89308t 5 13 / / SYM j098z89308t 5 14 diameter diameter NOUN j098z89308t 5 15 ratios ratio NOUN j098z89308t 5 16 h h NOUN j098z89308t 5 17 / / SYM j098z89308t 5 18 d d NOUN j098z89308t 5 19 = = NOUN j098z89308t 5 20 0.375 0.375 NUM j098z89308t 5 21 and and CCONJ j098z89308t 5 22 0.3125 0.3125 NUM j098z89308t 5 23 , , PUNCT j098z89308t 5 24 respectively respectively ADV j098z89308t 5 25 , , PUNCT j098z89308t 5 26 in in ADP j098z89308t 5 27 a a DET j098z89308t 5 28 mach mach NOUN j098z89308t 5 29 0.4 0.4 NUM j098z89308t 5 30 incoming incoming ADJ j098z89308t 5 31 fow fow PROPN j098z89308t 5 32 are be AUX j098z89308t 5 33 studied study VERB j098z89308t 5 34 . . PUNCT j098z89308t 6 1 the the DET j098z89308t 6 2 simulated simulated ADJ j098z89308t 6 3 flow flow NOUN j098z89308t 6 4 fields field NOUN j098z89308t 6 5 conrm conrm VERB j098z89308t 6 6 the the DET j098z89308t 6 7 findings finding NOUN j098z89308t 6 8 from from ADP j098z89308t 6 9 previous previous ADJ j098z89308t 6 10 experimental experimental ADJ j098z89308t 6 11 studies study NOUN j098z89308t 6 12 , , PUNCT j098z89308t 6 13 such such ADJ j098z89308t 6 14 as as ADP j098z89308t 6 15 the the DET j098z89308t 6 16 existence existence NOUN j098z89308t 6 17 of of ADP j098z89308t 6 18 a a DET j098z89308t 6 19 necklace necklace NOUN j098z89308t 6 20 vortex vortex NOUN j098z89308t 6 21 around around ADP j098z89308t 6 22 the the DET j098z89308t 6 23 base base NOUN j098z89308t 6 24 of of ADP j098z89308t 6 25 the the DET j098z89308t 6 26 turret turret NOUN j098z89308t 6 27 and and CCONJ j098z89308t 6 28 flow flow VERB j098z89308t 6 29 separation separation NOUN j098z89308t 6 30 in in ADP j098z89308t 6 31 the the DET j098z89308t 6 32 central central ADJ j098z89308t 6 33 plane plane NOUN j098z89308t 6 34 at at ADP j098z89308t 6 35 an an DET j098z89308t 6 36 angle angle NOUN j098z89308t 6 37 between between ADP j098z89308t 6 38 110 110 NUM j098z89308t 6 39 degree degree NOUN j098z89308t 6 40 and and CCONJ j098z89308t 6 41 115 115 NUM j098z89308t 6 42 degree degree NOUN j098z89308t 6 43 . . PUNCT j098z89308t 7 1 furthermore furthermore ADV j098z89308t 7 2 , , PUNCT j098z89308t 7 3 it it PRON j098z89308t 7 4 is be AUX j098z89308t 7 5 found find VERB j098z89308t 7 6 that that SCONJ j098z89308t 7 7 the the DET j098z89308t 7 8 necklace necklace NOUN j098z89308t 7 9 vortex vortex NOUN j098z89308t 7 10 is be AUX j098z89308t 7 11 well well ADV j098z89308t 7 12 below below ADP j098z89308t 7 13 the the DET j098z89308t 7 14 optical optical ADJ j098z89308t 7 15 aperture aperture NOUN j098z89308t 7 16 on on ADP j098z89308t 7 17 the the DET j098z89308t 7 18 turret turret NOUN j098z89308t 7 19 and and CCONJ j098z89308t 7 20 thus thus ADV j098z89308t 7 21 has have VERB j098z89308t 7 22 no no DET j098z89308t 7 23 direct direct ADJ j098z89308t 7 24 impact impact NOUN j098z89308t 7 25 on on ADP j098z89308t 7 26 the the DET j098z89308t 7 27 aero aero NOUN j098z89308t 7 28 - - PUNCT j098z89308t 7 29 optical optical ADJ j098z89308t 7 30 distortions distortion NOUN j098z89308t 7 31 , , PUNCT j098z89308t 7 32 density density NOUN j098z89308t 7 33 fluctuations fluctuation NOUN j098z89308t 7 34 , , PUNCT j098z89308t 7 35 which which PRON j098z89308t 7 36 are be AUX j098z89308t 7 37 directly directly ADV j098z89308t 7 38 related relate VERB j098z89308t 7 39 to to ADP j098z89308t 7 40 optical optical ADJ j098z89308t 7 41 aberrations aberration NOUN j098z89308t 7 42 , , PUNCT j098z89308t 7 43 are be AUX j098z89308t 7 44 strongest strong ADJ j098z89308t 7 45 within within ADP j098z89308t 7 46 the the DET j098z89308t 7 47 separated separate VERB j098z89308t 7 48 shear shear ADJ j098z89308t 7 49 layer layer NOUN j098z89308t 7 50 and and CCONJ j098z89308t 7 51 wake wake VERB j098z89308t 7 52 region region NOUN j098z89308t 7 53 , , PUNCT j098z89308t 7 54 and and CCONJ j098z89308t 7 55 the the DET j098z89308t 7 56 recirculation recirculation NOUN j098z89308t 7 57 bubble bubble NOUN j098z89308t 7 58 behind behind ADP j098z89308t 7 59 the the DET j098z89308t 7 60 turret turret NOUN j098z89308t 7 61 experiences experience NOUN j098z89308t 7 62 very very ADV j098z89308t 7 63 little little ADJ j098z89308t 7 64 density density NOUN j098z89308t 7 65 fluctuations fluctuation NOUN j098z89308t 7 66 . . PUNCT j098z89308t 8 1 optical optical ADJ j098z89308t 8 2 computations computation NOUN j098z89308t 8 3 also also ADV j098z89308t 8 4 confirm confirm VERB j098z89308t 8 5 the the DET j098z89308t 8 6 experimental experimental ADJ j098z89308t 8 7 results result NOUN j098z89308t 8 8 measured measure VERB j098z89308t 8 9 using use VERB j098z89308t 8 10 2 2 NUM j098z89308t 8 11 - - PUNCT j098z89308t 8 12 d d NOUN j098z89308t 8 13 wavefront wavefront ADJ j098z89308t 8 14 sensor sensor NOUN j098z89308t 8 15 . . PUNCT j098z89308t 9 1 besides besides ADV j098z89308t 9 2 , , PUNCT j098z89308t 9 3 the the DET j098z89308t 9 4 effects effect NOUN j098z89308t 9 5 of of ADP j098z89308t 9 6 elevation elevation NOUN j098z89308t 9 7 angle angle NOUN j098z89308t 9 8 and and CCONJ j098z89308t 9 9 azimuthal azimuthal NOUN j098z89308t 9 10 angle angle NOUN j098z89308t 9 11 on on ADP j098z89308t 9 12 optical optical ADJ j098z89308t 9 13 aberrations aberration NOUN j098z89308t 9 14 are be AUX j098z89308t 9 15 studied study VERB j098z89308t 9 16 in in ADP j098z89308t 9 17 a a DET j098z89308t 9 18 systematic systematic ADJ j098z89308t 9 19 way way NOUN j098z89308t 9 20 . . PUNCT j098z89308t 10 1 it it PRON j098z89308t 10 2 is be AUX j098z89308t 10 3 found find VERB j098z89308t 10 4 that that SCONJ j098z89308t 10 5 the the DET j098z89308t 10 6 optical optical ADJ j098z89308t 10 7 aberration aberration NOUN j098z89308t 10 8 grows grow VERB j098z89308t 10 9 almost almost ADV j098z89308t 10 10 linearly linearly ADV j098z89308t 10 11 with with ADP j098z89308t 10 12 elevation elevation NOUN j098z89308t 10 13 angle angle NOUN j098z89308t 10 14 when when SCONJ j098z89308t 10 15 the the DET j098z89308t 10 16 elevation elevation NOUN j098z89308t 10 17 angle angle NOUN j098z89308t 10 18 is be AUX j098z89308t 10 19 above above ADP j098z89308t 10 20 110 110 NUM j098z89308t 10 21 degree degree NOUN j098z89308t 10 22 , , PUNCT j098z89308t 10 23 but but CCONJ j098z89308t 10 24 it it PRON j098z89308t 10 25 has have VERB j098z89308t 10 26 a a DET j098z89308t 10 27 more more ADV j098z89308t 10 28 complicated complicated ADJ j098z89308t 10 29 relationship relationship NOUN j098z89308t 10 30 with with ADP j098z89308t 10 31 the the DET j098z89308t 10 32 azimuthal azimuthal NOUN j098z89308t 10 33 angle angle NOUN j098z89308t 10 34 . . PUNCT j098z89308t 11 1 at at ADP j098z89308t 11 2 small small ADJ j098z89308t 11 3 elevation elevation NOUN j098z89308t 11 4 angles angle VERB j098z89308t 11 5 it it PRON j098z89308t 11 6 decreases decrease VERB j098z89308t 11 7 with with ADP j098z89308t 11 8 increasing increase VERB j098z89308t 11 9 azimuthal azimuthal NOUN j098z89308t 11 10 angle angle NOUN j098z89308t 11 11 and and CCONJ j098z89308t 11 12 the the DET j098z89308t 11 13 change change NOUN j098z89308t 11 14 is be AUX j098z89308t 11 15 nonlinear nonlinear ADJ j098z89308t 11 16 ; ; PUNCT j098z89308t 11 17 however however ADV j098z89308t 11 18 , , PUNCT j098z89308t 11 19 when when SCONJ j098z89308t 11 20 the the DET j098z89308t 11 21 elevation elevation NOUN j098z89308t 11 22 angle angle NOUN j098z89308t 11 23 is be AUX j098z89308t 11 24 large large ADJ j098z89308t 11 25 , , PUNCT j098z89308t 11 26 the the DET j098z89308t 11 27 aberration aberration NOUN j098z89308t 11 28 does do AUX j098z89308t 11 29 not not PART j098z89308t 11 30 decrease decrease VERB j098z89308t 11 31 much much ADV j098z89308t 11 32 , , PUNCT j098z89308t 11 33 and and CCONJ j098z89308t 11 34 even even ADV j098z89308t 11 35 increases increase NOUN j098z89308t 11 36 with with ADP j098z89308t 11 37 azimuthal azimuthal ADJ j098z89308t 11 38 angle angle NOUN j098z89308t 11 39 at at ADP j098z89308t 11 40 small small ADJ j098z89308t 11 41 azimuthal azimuthal NOUN j098z89308t 11 42 angles angle NOUN j098z89308t 11 43 but but CCONJ j098z89308t 11 44 keeps keep VERB j098z89308t 11 45 decreasing decrease VERB j098z89308t 11 46 at at ADP j098z89308t 11 47 large large ADJ j098z89308t 11 48 azimuthal azimuthal NOUN j098z89308t 11 49 angles angle NOUN j098z89308t 11 50 . . PUNCT