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October 12, 2010, 07:57 
paper request

#61 
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ata kamyabi
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Hi Dear FOAMers
May any one tell me how can I get the paper "Drop impact onto a liquid layer of finite thickness: Dynamics of the cavity evolution"? Best regards 

October 12, 2010, 08:05 

#62 
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Suresh kumar Kannan
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Hi ata give me your email I.D . I can send it to you.
regards K.Suresh kumar 

October 12, 2010, 08:15 

#63 
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ata kamyabi
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Hi Kumar
I sent you via a private message in the forum. Thank you very much 

February 4, 2011, 13:56 

#64 
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Alexey Ginevsky
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Hi ata,
Could you send me paper "Drop impact onto a liquid layer of finite thickness: Dynamics of the cavity evolution"? My email: alexeyginevsky@gmail.com Thank you in advance. 

February 5, 2011, 00:05 
Drop impact onto a liquid layer of finite thickness Dynamics of the cavity evolution

#65 
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ata kamyabi
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Hi
I sent it. Good luck 

April 8, 2011, 04:26 

#66 
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Klaus Schnitzlein
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Hi ata,
please could you send me your paper "Drop impact onto a liquid layer of finite thickness: Dynamics of the cavity evolution", too? My email: klaus@rt.tucottbus.de Thanks in advance. linoth 

April 8, 2011, 10:39 

#67 
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ata kamyabi
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Hi
I sent it. Good luck 

September 8, 2011, 02:35 

#68 
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NieYongguang
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Dear foamer
I have review the code of interFoam and interPhaseChangeFoam. However, I can't understand the function usage of MULES. It write in interPhaseChangeFoam: MULES::explicitSolve(oneField(), alpha1, phi, phiAlpha, Sp, Su, 1, 0). What mean does 'Su' in the code. Anybody can me a reference about MULES method? 

September 8, 2011, 03:39 

#69 
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Anton Kidess
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Sp and Su are implicit and explicit source terms (e.g. for cavitation simulations).


September 8, 2011, 22:49 

#70  
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NieYongguang
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Quote:
Code:
fvScalarMatrix pEqn ( fvc::div(phi)  fvm::laplacian(rUAf, p)  (vDotvP  vDotcP)*pSat + fvm::Sp(vDotvP  vDotcP, p) ); 

September 9, 2011, 02:11 

#71 
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Anton Kidess
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Because there is no fvm::Su() function. Explicit source terms are used without any additional notation.


September 9, 2011, 02:38 

#72  
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NieYongguang
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Quote:
Code:
00032 template<class Type> 00033 Foam::tmp<Foam::fvMatrix<Type> > 00034 Foam::fvm::Su 00035 ( 00036 const DimensionedField<Type, volMesh>& su, 00037 const GeometricField<Type, fvPatchField, volMesh>& vf 00038 ) 00039 { 00040 const fvMesh& mesh = vf.mesh(); 00041 00042 tmp<fvMatrix<Type> > tfvm 00043 ( 00044 new fvMatrix<Type> 00045 ( 00046 vf, 00047 dimVol*su.dimensions() 00048 ) 00049 ); 00050 fvMatrix<Type>& fvm = tfvm(); 00051 00052 fvm.source() = mesh.V()*su.field(); 00053 00054 return tfvm; 00055 } Code:
00098 template<class Type> 00099 Foam::tmp<Foam::fvMatrix<Type> > 00100 Foam::fvm::Sp 00101 ( 00102 const DimensionedField<scalar, volMesh>& sp, 00103 const GeometricField<Type, fvPatchField, volMesh>& vf 00104 ) 00105 { 00106 const fvMesh& mesh = vf.mesh(); 00107 00108 tmp<fvMatrix<Type> > tfvm 00109 ( 00110 new fvMatrix<Type> 00111 ( 00112 vf, 00113 dimVol*sp.dimensions()*vf.dimensions() 00114 ) 00115 ); 00116 fvMatrix<Type>& fvm = tfvm(); 00117 00118 fvm.diag() += mesh.V()*sp.field(); 00119 00120 return tfvm; 00121 } 

September 9, 2011, 03:52 

#73 
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Anton Kidess
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Mea culpa! I do still believe that writing "fvm::Su((vDotvPvDotcP)*pSat, p)" is equivalent to "(vDotvPvDotcP)*pSat*p". Anyway, I think the gist of your question is why the source term is treated implicitly? My guess is that (vDotvPvDotcP) is usually larger zero, so when including the expression in the matrix instead of moving it to the right hand side of the equation system you will increase diagonal dominance.


September 9, 2011, 05:51 

#74  
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NieYongguang
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Quote:


March 25, 2012, 11:18 

#75 
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ehsan
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Dear all
I need a reference which describes by more details the new localtime stepping (LTS) approach applied in VOF in openfoam. Thanks 

May 17, 2012, 23:20 
Summary + some questions

#76  
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Pharg Mandadapu
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I found this thread when I was looking for reference documentation for InterFoam, and decided to make like a short summary of it and at the same time ask some interesting questions that I think is still left unanswered.
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Pharg Last edited by pharg_yrartibra; May 17, 2012 at 23:48. 

June 12, 2013, 23:24 

#77 
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Dongyue Li
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Hi All,
I found all of you guys are working around VOF method, I am a newbie here, but I am facing a problem regarding the changeable viscosity in VOF. For example: if the liquid is kind of nonnewtonian fluid. More details I wrote it here, http://www.cfdonline.com/Forums/ope...wierdnu.html Can you guys help me check this out? Is this a problem only regarding with the viscosity model or with VOF? Thanks in advance. 

November 5, 2014, 15:32 

#78 
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james wilson
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@isabel
" In the interFoam solver, what these lines in the file gamma.Eqn.H mean? surfaceScalarField phiGamma = fvc::flux ( phi, gamma, gammaScheme ) + fvc::flux ( fvc::flux(phir, scalar(1)  gamma, gammarScheme), gamma, gammarScheme ); " this refers to the compression term used in MULES. note (gamma) and (1gamma). These filter the velocity field and gives us a way to evaluate Ur = U1  U2 which is used in the interface compression term. Also look up fvcFlux.* in your install directory. this will shed some light on what phiGamma becomes. see: http://infoscience.epfl.ch/record/130534 and http://powerlab.fsb.hr/ped/kturbo/Op...chePhD2002.pdf to see the interface compression term. 

June 8, 2015, 08:05 

#79  
Senior Member

Quote:
Since this post is very old and some of you might have dig into the code. Hence, I am posting my doubt in this thread. If we look at the MULES solver as pointed by SM Damian, new flux is assembled for the momentum equation. Doubt: In case of interface, the "rhoPhi" term can be easily related to the equation. Now, How to relate the "rhoPhi" term for the phase 1 or phase 2 cells (where no interface is present)? Please correct me, if I misinterpret anything.  Thanks in Advance 

June 13, 2015, 01:50 

#80 
Senior Member

Dear All,
Thanks again for your time. I have understood the term "rhoPhi". Hence I am sharing this info, may be it will be beneficial to others. For phase 1: rhoPhi = phi*rho1; For phase 2: rhoPhi = phi*rho2; For interface: rhoPhi = phiAlpha*(rho1  rho2) + phi*rho2;  

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