OpenFOAMinterFoam

2

42OpenCAE@ 2015/10/17

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

VOF

VOF VOFAMR CLSVOF VOF/PLIC VOF/SLIC VOF/WLIC VOF/IB CIP WENO

PLIC (Piecewise Linear Interface CalculaLon) SLIC (Simple Line Interface CalculaLon) WLIC (Weighted Line Interface CalculaLon)

2011 Cambridge Univ. Press (VOF, Front-Tracking, Level-Set )

VOF(InterFoam)

Dam Break (Tutorial)

VOF

VOFAMR(InterDymFoam)

Dam Break (Tutorial)

()

VOF

1. alpha

:: liquid phase :: interface :: gas phase

1=

0=

10

OpenFOAMVOF

alpha +

:: liquid phase :: interface :: gas phase

1=

0=

10

1( )ur( ) urf = n f min c fS f, fS f max

!

"##

$

%&&

ur

C

C C

C

Cspurious current Cspurious current

D. A. Hoang et al., Comput. Fluids, 86, 28-36 (2013).

spurious current

spurious current(CSF)

J. U. Brackbill et al., J. Comp. Phys., 100, 335-354 (1992). F = kns

n = +N

s =

F = k

N =1.0108

( Vi / NN )1/3

k =n

,k

Navier-Stokes

()

spurious current

spurious current

spurious current

spurious currentOpenFOAM()

PLICOpenFOAM

OpenFOAM()

alphaD. A. Hoang et al., Comput. Fluids, 86, 28-36 (2013).

! = f S ff =1

n

Sff =1n

S-CLSVOFLevel-SetA. Albadawi et al., Int. J. Multiphase Flow, 53, 11-28 (2013).

C (nAlphaSubCycle

)

OpenFOAMinterFoam

OpenFOAM

solver

References

D. A. Hoang et al., Comput. Fluids, 86, 28-36 (2013).

J. U. Brackbill et al., J. Comp. Phys., 100, 335-354 (1992).

A. Albadawi et al., Int. J. Multiphase Flow, 53, 11-28 (2013).