
[Sponsors] 
October 12, 2010, 07:57 
paper request

#61 
Senior Member
ata kamyabi
Join Date: Aug 2009
Location: Kerman
Posts: 322
Rep Power: 9 
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 
Senior Member
Suresh kumar Kannan
Join Date: Mar 2009
Location: Luxembourg, Luxembourg, Luxembourg
Posts: 129
Rep Power: 9 
Hi ata give me your email I.D . I can send it to you.
regards K.Suresh kumar 

October 12, 2010, 08:15 

#63 
Senior Member
ata kamyabi
Join Date: Aug 2009
Location: Kerman
Posts: 322
Rep Power: 9 
Hi Kumar
I sent you via a private message in the forum. Thank you very much 

February 4, 2011, 13:56 

#64 
New Member
Alexey Ginevsky
Join Date: Oct 2010
Location: Moscow
Posts: 6
Rep Power: 7 
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 
Senior Member
ata kamyabi
Join Date: Aug 2009
Location: Kerman
Posts: 322
Rep Power: 9 
Hi
I sent it. Good luck 

April 8, 2011, 04:26 

#66 
New Member
Klaus Schnitzlein
Join Date: Mar 2009
Posts: 7
Rep Power: 9 
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 
Senior Member
ata kamyabi
Join Date: Aug 2009
Location: Kerman
Posts: 322
Rep Power: 9 
Hi
I sent it. Good luck 

September 8, 2011, 02:35 

#68 
New Member
NieYongguang
Join Date: Sep 2010
Posts: 27
Rep Power: 7 
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 
Senior Member
Anton Kidess
Join Date: May 2009
Location: Delft, Netherlands
Posts: 1,112
Rep Power: 20 
Sp and Su are implicit and explicit source terms (e.g. for cavitation simulations).


September 8, 2011, 22:49 

#70  
New Member
NieYongguang
Join Date: Sep 2010
Posts: 27
Rep Power: 7 
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 
Senior Member
Anton Kidess
Join Date: May 2009
Location: Delft, Netherlands
Posts: 1,112
Rep Power: 20 
Because there is no fvm::Su() function. Explicit source terms are used without any additional notation.


September 9, 2011, 02:38 

#72  
New Member
NieYongguang
Join Date: Sep 2010
Posts: 27
Rep Power: 7 
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 
Senior Member
Anton Kidess
Join Date: May 2009
Location: Delft, Netherlands
Posts: 1,112
Rep Power: 20 
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  
New Member
NieYongguang
Join Date: Sep 2010
Posts: 27
Rep Power: 7 
Quote:


March 25, 2012, 11:18 

#75 
Member
ehsan
Join Date: Mar 2009
Posts: 98
Rep Power: 9 
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  
New Member
Pharg Mandadapu
Join Date: Jul 2011
Posts: 16
Rep Power: 6 
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.
Quote:
Quote:
Quote:
Quote:
Quote:
Quote:
Quote:
Quote:
Quote:
Quote:
Quote:
Quote:
Pharg Last edited by pharg_yrartibra; May 17, 2012 at 23:48. 

June 12, 2013, 23:24 

#77 
Senior Member
Dongyue Li
Join Date: Jun 2012
Location: Torino, Italy
Posts: 742
Rep Power: 9 
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, interFoam, wierd nu. 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 
Member
james wilson
Join Date: Aug 2014
Location: Orlando, Fl
Posts: 36
Rep Power: 3 
@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
Tushar Chourushi
Join Date: Jul 2009
Location: IITIndore, India
Posts: 319
Blog Entries: 1
Rep Power: 9 
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
Tushar Chourushi
Join Date: Jul 2009
Location: IITIndore, India
Posts: 319
Blog Entries: 1
Rep Power: 9 
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;  

Thread Tools  
Display Modes  


Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Comparing between the Fractional step method and the SIMPLE method  ghlee  Main CFD Forum  1  April 10, 2012 16:59 
Finite volume method vs finite difference method?  superfool  Main CFD Forum  4  October 21, 2006 14:37 
Pressure Correction method, Finite Volume Method  Seeker01  Main CFD Forum  2  January 13, 2003 03:49 
hesssmith method and fvm method  yangqing  FLUENT  0  March 20, 2002 20:25 
Projection method and Blockoff method  Leo  Main CFD Forum  0  June 14, 2001 07:22 