OpenFOAM

2013/1/19

M1

)(-) (-) (-)

,,2012,C03-4 ,,2011,C04-3

(Interface Tracking) (Interface Capturing) ()

(MPS, SPH) VOF Level-Set Phase Field BFC() ALE(Arbitrary Lagrangian-Eulerian)

OpenFOAM

(MPS, SPH) VOF Level-Set Phase Field (Front tracking) BFC() ALE(Arbitrary Lagrangian-Eulerian)

VOFinterFoam

VOF(Volume of Fluid) Navier-Stokes

sk

gPt

nF

Fvvvv

=

+++=+

2

0= v

VOF VOF

VOF

VOF

k:

:: liquid phase :: interface :: gas phase

1=

0=10

OpenFOAMVOF

InterFoam VOF InterDymFoam VOFAMR InterMixingFoam VOF(3)

OpenFOAMAMRVOF

AMR(AdapUve Mesh Refinement)

VOF(InterFoam)

Dam Break (Tutorial)

VOF

VOFAMR(InterDymFoam)

Dam Break (Tutorial)

()

VOF

VOF VOFAMR CLSVOF VOF/PLIC VOF(THINC/WLIC) CIP WENO

PLIC (Piesewise Linear Interface CalculaUon) SLIC (Simple Line Interface CalculaUon) WLIC (Weighted Line Interface CalculaUon)

CLSVOFOpenFOAM

VOF

InterFoam

Navier-Stokes

sk

gPt

nF

Fvvvv

=

+++=+

2

:: liquid phase :: interface :: gas phase

1=

0=10

InterFoam

Navier-Stokes

sk

gPt

nF

Fvvvv

=

+++=+

2

:: liquid phase :: interface :: gas phase

1=

0=10 nu() ) );}

( ) 0=+

vt

InterFoam

Navier-Stokes

sk

gPt

nF

Fvvvv

=

+++=+

2

:: liquid phase :: interface :: gas phase

1=

0=10

InterFoam

Navier-Stokes

sk

gPt

nF

Fvvvv

=

+++=+

2

:: liquid phase :: interface :: gas phase

1=

0=10

InterFoam

Navier-Stokes

sk

gPt

nF

Fvvvv

=

+++=+

2

:: liquid phase :: interface :: gas phase

1=

0=10

InterFoam

Navier-Stokes

:: liquid phase :: interface :: gas phase

1=

0=10

InterFoam

Navier-Stokes

:: liquid phase :: interface :: gas phase

1=

0=10

InterFoam

Navier-Stokes

:: liquid phase :: interface :: gas phase

1=

0=10

InterFoamVer. 1.6.x

( ) ( )( ) 01 =++

rtvv

()

( ) ( )( ) 01 =++ dVdVdVdtd

V rVVvv

dVdsVs = aan

( ) dSdSdVdtd

SSV ++ nvnv r 1

InterFoamVer. 1.6.x

( ) dSdSdVdtd

SSV ++ nvnv r 1

( )( ) ff S nvr1( ) ff Snvf Sf

Sf

vn

OpenFOAM

InterFoamVer. 1.6.x

alphaEqn.H 5~8 surfaceScalarField phic = mag(phi/mesh.magSf());phic = min(interface.cAlpha()*phic, max(phic));surfaceScalarField phir = phic*interface.nHaq();

fc S

=

))max(,min( ccc C =

fcr n=

=

fffr ss

Cn max,min

( )( ) ff S nvr1r??

InterFoamVer. 1.6.x

alphaEqn.H 5~8 surfaceScalarField phic = mag(phi/mesh.magSf());phic = min(interface.cAlpha()*phic, max(phic));surfaceScalarField phir = phic*interface.nHaq();

find, grep(src)

src/transportModels/interfaceProperUes/interfaceProperUes.C

cAlpha, nHaq_, K_

InterFoamVer. 1.6.x

// Face unit interface normal flux nHaq_ = nHaqv & Sf;

// Simple expression for curvature K_ = -fvc::div(nHaq_);

transportProperUesDict_(dict), cAlpha_ ( readScalar ( alpha1.mesh().soluUonDict().subDict("PISO").lookup("cAlpha") ) ),

src/transportModels/interfaceProperUes/interfaceProperUes.C

ffvf Snn =CSF (Brackbill (1992)) (ConUnuum Surface Force)

F = knfnk = nk =

n

C

131

117

146

InterFoamVer. 1.6.x

// Face unit interface normal surfaceVectorField nHaqv = gradAlphaf/(mag(gradAlphaf) + deltaN_);

src/transportModels/interfaceProperUes/interfaceProperUes.C

113( )

( ) Nff

fvn

+

=

deltaN_ ( "deltaN", 1e-8/pow(average(alpha1.mesh().V()), 1.0/3.0) ),

156

3/1

8

)/(0.1

=

Ni

N NVe

InterFoamVer. 1.6.x

alphaEqn.H 5~8 surfaceScalarField phic = mag(phi/mesh.magSf());phic = min(interface.cAlpha()*phic, max(phic));surfaceScalarField phir = phic*interface.nHaq();

=

fffr ss

Cn max,min

( )( ) ff S nvr1??

InterFoamVer. 1.6.x

alphaEqn.H 9~ for (int aCorr=0; aCorr

InterFoamVer. 1.6.x

=

fffr ss

Cn max,min )1( += r

( ) dSdSdVdtd

SSV ++ nvnv r 1

fS= v

InterFoam

t = t + t

PISO

YES

NO

END

InterFoam.C

CLSVOF

CLSVOF(Conjugate Level-Set and Volume Of Fluid)

Navier-Stokes

sk

gPt

nF

Fvvvv

=

+++=+

2

k; n=k

Level-Set

CLSVOF

t = t + t

PISO

YES

NO

END

CSF

OpenFOAM

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