CFD Online Discussion Forums

foam formation

Posted February 23, 2017 at 03:29 by kindle

When I heat the bowl to get warm milk, I got foam forming at the heating surface and the foam is staying at the inner surface after I drank all milk in it.

kindle

New Member

Posted in findings

Views 1206 Comments 0 kindle is offline

How to solve this

Posted February 23, 2017 at 03:20 by kindle

Quote:

Originally Posted by dbxmcf

Hi, all:

I intended to specify a volScalarField p with boundaryField and internal Field specified by another function call instead of read from case file on hard drive, e.g. cavity/0/p, and in the creatFields.H for icoFoam.C I found the p was constructed using the following:
//-------------------------------------
volScalarField p
(
IOobject
(
"p",
runTime.timeName(),
mesh,
IOobject::MUST_READ,

...

kindle

New Member

Posted in programming

Views 1082 Comments 0 kindle is offline

How to solve this : openfoam define a zero value volscalarfield

Posted February 23, 2017 at 03:18 by kindle

Quote:

Originally Posted by LUIS1717

Hi everyone,

I'm trying to program a solver and its need a volscalarfield that initially must be zero everywhere in the mesh and I don't want to read it from any initial condition or to write it down. Anyone know how to do it?

thanks in advance Luis

ddddddddddddddddddddddddddddddddddddd

kindle

New Member

Posted in Pre-processing

Views 1071 Comments 0 kindle is offline

Incompressible LES tutorial (oodles) - time averaged statistics

Posted February 23, 2017 at 03:18 by kindle

ggggggggggggggggggggggggggggggg

Quote:

Originally Posted by bernarde

Good day

I have completed the Incompressible LES tutorial (oodles pitzDaily). Viewing the results in paraFoam gives me the field values at discrete time steps throughout the simulation.

However, I would like to view the average over say the last 100 steps, to view the statistics of the solution. Is there a way I can do this in paraFoam?

Also, how is convergence judged in this example? Normally I judge conversion in a

...

kindle

New Member

Posted in Post-processing

Views 817 Comments 0 kindle is offline

Pressure units in incompressible solvers

Posted February 23, 2017 at 03:17 by kindle

Quote:

Originally Posted by Per

Hi

I am quite new to OpenFOAM, and have some basic questions about units. From the tutorial cases I see that the units for pressure in incompressible solvers (e.g. simpleFoam) are m^2/s^2. Which make sense since pressure is constant. I guess I then have to scale (divide) my pressure initial and boundary conditions with rho in order to get a correct solution? My real question is: can I define my pressure units to be kg/ms^2 and define density rho in the transportProperties file

...

kindle

New Member

Posted in Uncategorized

Views 696 Comments 0 kindle is offline