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All about the PIMPLE algorithm - Part I

Posted October 21, 2014 at 17:54 by Tobi
Updated October 22, 2014 at 08:25 by Tobi

#### Storyboard ####

First I wanted to write a nice story like »Ignaz« but that would only copy the good attention of the author and of course I am not a good story-teller. Therefor I will go directly to the topic and will tell you how the PIMPLE algorithm is working in OpenFOAM, how to set up the keywords and which abilities you have to control the algorithm. The test case it the pitzDaily case in the pimpleFoam folder of incompressible fluids. Only the courant number was decreased...
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Old

useful udf ! thanks to macfly

Posted October 21, 2014 at 17:33 by diamondx

#include "udf.h"
real T_mean; /* defined outside because will be used in multiple DEFINE macros */

DEFINE_ADJUST(adjust, domain, t)
{
real T_tot;
real u;
real counter = 0;

face_t f;
int ID = 20; /* outlet ID displayed in Fluent boundary conditions panel */
Thread *thread;
thread = Lookup_Thread(domain, ID);
begin_f_loop(f, thread)
{
u = F_U(f, thread); /* x velocity...
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Old

Prism layers at airfoil using shappyHexMesh

Posted October 20, 2014 at 05:58 by skeptik (CFD notes)

Hard work with stupid snappyHexMeshDict bruteforcing and i have a result

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Old

2 blade model NACA23015

Posted October 1, 2014 at 05:49 by skeptik (CFD notes)

Seems to be true,
My polyMesh test.

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Faces of a cell

Posted September 20, 2014 at 10:31 by pfhan

openfoam loop cell faces of a cell and get the corresponding cell face normal, noting that the normal vector direction points from low cell ID to the higher one

Quote:
Originally Posted by kuczmas View Post
Dear forumers,

I decided to post my question inside this thread, as it is also somehow connected with looping over faces in a given cell. What I try to achieve is to get the face normal vector at every face in the cell, regardless it is a boundary cell or internal.
I produced the following code...:
...
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