xflow cnrs marseille 24mai2012

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  • XFlow Meshless Particle -based CFD Code

    Presented By: Fausto Gill Di Vincenzo24-05-2012

  • Topics

    ! " # $" %

    &

    ! " # $" %

    ( & )

  • XFlow Key Technology *++#+ ( * ++,+-+(*+

    ++++&+(++ +#+(++++&./+) ++0((

    *+&++/+#+&+(( /+ +++++/+++&+# +++(++(+"(+1&/++)&++& )&&++$)%

    + (+++1.+$%++ +#+,)2+$%+3&+ )+(+++++#+++

    ++&++++(+

  • XFlow Applications ++!#+ ++#++ ++ &++#+&++/+&/+" (+/++&++&(+&)&&+

    0+++ +&+ +4+/+/+5&( ++ +&(+&+ +(4+(+/+++ +/+

  • Xflow application fields6+ ,+(+"

    &+

    -(+(+ ,+(+"

    +&

    &

  • &++ )&+7

    Xflow application fields

    1&+-+(+ 6(++ (++ 2+7

  • Large Eddy Simulation - Turbulence Modeling ( &+$ %+(++++89:;+#++++&+++ !! ++5+++(+++

    !! &++#++&+++&+ +++

    -0)++ " (++++ # ++

    !## +#++++++,)2+ 3&

    + $ (+ + +$ $ %

    %+ &+ &++$ % %++++++++ &+&+

    & ( 2+$& %++#+++(+

  • Lattice Boltzmann Method . ( +$ ( %++++++ + ) + &+

    ) +&++++++ +++&

    *+ +++++#++(+-+ ++++++#+++"+

    #+ , )2+3&++

    ( +2+&++ #! &+++#+(+#+&++++/++ &++(

    + *+ + ,-.!

    ,-.! ++ #! !

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    +++

    ( ++#+++ +++#&+&+

    ? +-1"++

  • Topics

    0

    ! " # $" %

    &

    ! " # $" %

    ( & )

  • XFlow Interface

    ++&3&+++/++ ++&+(++++

  • 1st Validation Test Case +)&+++!+,;;8>+

    )&+,;;8>+

    -? +

    -? + ++" +&

    -? +

    7 4+ +!@+-2/+-)+-&/+1+@+)(/+ !" #$% & &(( ) /+#+>;;;@

    Virtual Wind Tunnel: 60x40 m

  • ++ >@AB 7(++7+ ;@;;A

    Resolution of the Solution 7 ++&+ & + +

    7(++7

    (++)+ )+, ;;8>

    7+)

    7+)7(++7

    )

  • ++4+C-+D+;@;/+;@>A/+;@A/+;@:A++8@;

    Post Processing of Results

    +++ E+++ !&+

    !+++

    7&+4

  • X - component of the Velocity along the Data Plot Li nes+D+; +D+;@>A +D+;@A

    Courtesy of David P. Lockard and the NASA Langley Research Center

    +D+;@:A +D+8

  • Y - component of the Velocity along the Data Plot Li nes+D+; +D+;@>A +D+;@A

    Courtesy of David P. Lockard and the NASA Langley Research Center

    +D+;@:A +D+8

  • Pressure Coefficient along the Data Plot Lines+D+; +D+;@>A +D+;@A

    Courtesy of David P. Lockard and the NASA Langley Research Center

    +D+;@:A +D+8

  • -? #57+0++

    #5

    *# ;@8:;A ;@8:F8 ;@8:F8 >@;B:G+H

    Comparison of the Drag and Lift Coefficient

    *# ;@8:;A ;@8:F8 ;@8:F8 >@;B:G+H

    * 8@;++8;8? ;@A?G++8;A ; ;+H

    Courtesy of David P. Lockard and the NASA Langley Research Center

    Results are in accordance with objective

  • 2nd Validation Test Case

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    +

    (!!

    & /

    +F++8;I ;@8 >0J;B F?@:F9?+C

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    (+

  • ++ 8@>G ++2+7+ ;@;;>A

    7+)

    Resolution of the Solution

    7+)

    (++)+ )G>A

    2+7& +)+

    7( 7 4+ +2

    Virtual Wind Tunnel: 60x40 m

    7+)

  • Projection of the Pressure Coefficient

  • Pressure Coefficient for different AOA

  • Pressure Coefficient for different AOA

  • Pressure Coefficient for different AOA

  • 3th Validation Test Case

    ? +)&+++!++)"+

    )"+

    +4++D+A;+C 4+ r D+8+L(C?

    +4+ mD+8@AA+!

  • Turbulent wake structure

    & +

  • ++++ ++ +1.

    Pressure distribution along the symmetry plane

    !&+++++

    +&+#&+(+++

  • ++++ ++ +1.

    Pressure distribution along the symmetry plane

    7+!&+++++

    #+&+#&+(+++

  • ++++ ++ +1.

    Drag estimation

    +(++

    +++ &(

  • 4th High lift prediction

    ? +)&+++!++(++++ ++

    (+(

  • 4th High lift prediction

    +&++ F;++8A++?;+ &+++#

    &++&

  • 4th High lift prediction7+++++ + ++2++

    7++$+%4+8@>G+

    7++&

    (+++2+4+;@;8++

    (++++4+;@;;A++

  • Results overview+ )+&+ &.

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    &++(+

  • Vorticity

    &+7(++ + &+7(++ +

    4+8?+( )&+4+;@>B+

  • Pressure distribution

    )+&+

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  • Friction coefficient distribution

    4+8?+( )&+4+;@>B+

    ++

  • Drag coefficient distribution

    (++

    +++ ,)+-(+7+ +

  • Lift coefficient distribution

    -++

    +++ ,)+-(+7+ +

  • Polar curve evaluation

    !+&

    +++ ,)+-(+7+ +

  • Topics

    0

    ! " # $" %

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  • # & ( 3& ")

    Traditional Mesh -based CFD codes

    "

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  • Traditional Mesh -based process analysis +"

    Nuovo PignoneGE Energy Oil & Gas

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    GE Energy Oil & Gas

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  • Motivation for modeling with XFlow# L++ -(( &++-0)+& #&+"

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  • XFlow - Overview process analysis +" "

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  • Topics

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  • Geometry tessellation - Mesh +"+ ( +

    ++&++#+ + +(&++

  • Regular STL Geometry creation via FEM

    +" 0+

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    Wing case study

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    From XFlow to Nastran - Static Aeroelasticity

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  • Topics

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  • UAV - Geometry creation via FEM

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  • UAV - Post processing

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