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  • 8/20/2019 TUTORIAL Xflr5 Tutorial

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    Guidelines for XFLR5 v6.03 1/71 February 2011

    Analysis of foils and wings operating at low Reynolds numbers

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    TABLE OF CONTENTS

    1 PURPOSE ................................................................................................................................................................ 4

    2 INTRODUCTION ......................................................................................................................................................... . 4

    2.1 Code limitations and domain of validity ......................................................................................................... 4

    2.2 XFLR5's development history .................................................................................................... .......... ......... 4

    2.3 Changes introdued in XFLR5 v! ................................................................................................................ . 5

    2.4 Code struture ...................................................................................................................................... ....... !

    3 FOIL ANALYSIS AND DESIGN MODES ............................................................................................................................. 7

    3.1 "eneral ................................................................................................................................................. ........ #

    3.2 $iret %nalysis &per( ......................................................................................................................... .......... # 3.2.1 Foil o)*et  ............................................................................................................................................................................................. # 3.2.2 Foil +odifiat ion ........................... ............................. ............................ ............................ ............................ ..................... ...... ....... ..... #

    3.2.3 %nalysis,-olar o)*et ............................ ............................ ............................. ............................ ............................ ...................... ....... ..  3.2.4 perating -oint /p-oint0 o)*et  .........................................................................................................................................................  3.2.5 XFoil analysis .......................... ............................ ............................ ............................ ............................. ........................... ...... ....... ....  3.2.! XFoil errors ......................... ............................. ............................ ............................ ............................ ............................. ............. ..... 1 3.2.# ession eample  $iret %nalysis .......................... ............................ ............................. ............................ ............................ ...... ... 1

    3.3 Full 6nverse $esign &+$7( and +ied 6nverse $esign &8$7( ................................................................. 11 3.3.1 "eneral  ............................................................................................................................................................................................... 11 3.3.2 ession eample  Full 6nverse $esign .......................... ............................. ............................ ............................ ........................ ...... 11 3.3.3 ession eample  +ied 6nverse $esign ........................... ............................ ............................ ............................. .................. ...... . 11

    3.4 Foil $iret $esign ........................................................................................................................................ 11 3.4.1 "eneral  ............................................................................................................................................................................................... 11 3.4.2 9:splines main features ..................................................................................................................................................................... 12 3.4.3 pline -oints main features ........................... ............................ ............................. ............................ .......................... ....... ...... ....... 12 3.4.4 Leading and trailing edge .................................................................................................................................................................. 12 3.4.5 utput preision ................................................................................................................................................................................ 12

    3.4.! $igitali;ation ............................ ............................ ............................ ............................. ............................ ............................ ........ ...... 12

    4 3D ANALYSIS ....................................................................................................................................................... 13

    4.1

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    4.3.11 Control analysis  -olar >ype 5 and >ype ! ............................ ............................ ............................ ............................ ............... ..... 4! 4.3.12 6nterpolation of the XFoil:generated -olar +esh .......................... ............................ ............................. .......................... ....... ...... ... 4! 4.3.13 treamlines ......................... ............................ ............................. ............................ ............................ ........................ ...... ....... ...... . 4# 4.3.14 Comparison to eperimental results .......................... ............................ ............................. ............................ ............... ....... ...... ..... 4 4.3.15 Comparison to Aind tunnel data ......................... ............................ ............................ ............................. ............................ ............. 4 4.3.1! Comparison to +iare and %?L results ........................... ............................ ............................. ............................ ........... ....... ....... .. 5 4.3.1# ession eample  heory ......................... ............................ ............................ ............................. ............................ ............................ ............ ...... ....... . 55 4.4.3 Frames of referene ........................ ............................. ............................ ............................ ............................ ......................... ....... .. 55 4.4.4 Coordinates= position= veloity= and rotation vetor ......................... ............................. ............................ ......................... ....... ...... ... 5! 4.4.5 Flight onstraints ........................... ............................ ............................ ............................ ............................. ...................... ....... ...... . 5! 4.4.! tate desription .......................... ............................ ............................. ............................ ............................ ............................ .......... 5# 4.4.# %nalysis proedure ........................... ............................ ............................ ............................ ............................. ........................... ...... 5# 4.4. 6nput  5 4.4. utput  ................................................................................................................................................................................................. ! 4.4.1 ession eample  ta)ility analysis ........................... ............................ ............................ ............................. ..................... ...... .... !5

    5 CODE SPECIFICS ..................................................................................................................................................... 67

    5.1 XFoil= %?L and XFLR5 ................................................................................................................................ !#

    5.2 Files and Registry ............................................................................................................................ .......... . !#

    5.3 hortuts ..................................................................................................................................................... !#

    5.4 +ouse input .......................................................................................................................... ...................... !#

    5.5 +emory ................................................................................................................................................... .... !

    5.! 7port ptions ............................................................................................................................... .......... ... !

    5.# 9ugs .........

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