Blog Entries

isn't it?

As i remember sometimes better to use slip BC.

So now with sP BC i have U RMS approx 1e-2 - 1e-1. It's bad.

I've changed BC to slip, so data comes soon

I had a problem


I've analyzed the problem successfully today.



1. To prevent such behavior of sHM the mesh should not have 'empty' patches. So if you need prism layer at the symmetryPlane, you should change patch type only on final stage of your meshing process.

2....

Another rare case could be so cool: good mesh, good residuals, good y+. So sad, cause it's not mine PhD work)





It's really interesting, the U profile in spirals. At the peripheral regions flow accelerates, it needs to be investigated in light of heat transfer problems. Also, question about proper turbulence model is opened cause kOmegaSST sometimes gives wrong results in whirled and circular flows....

A couple of routines i regularly use to output solution files in more manageable ascii files for post-processing in MATLAB. Of course this only makes sense when working in simple geometries where cells have regular patterns (e.g., simple boxes for computations in channels and ducts).

1) output.c: Used to dump an instantaneous field file

2) outputavg.c: Used to dump an averaged field file

More details can be found in the files

Here i collect some very basic tools i used when performing basic LES computations in Fluent.

1) Custom field function for the Q criterion (q_crit.txt, to be renamed in .scm). Some Fluent versions (12, 13 and maybe 14) only have a "Normalized Q criterion" scalar, while previous ones simply don't have it at all. This custom field function is what i used in those dark days.

2) Several initialization routines (init*.c and scalefield.c) fully described in the files...