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## A generalized thermal/dynamic wall function: Part 3

Posted October 17, 2016 at 11:25 by sbaffini (NuTBox)
Updated October 18, 2016 at 07:30 by sbaffini (Added missing Pr/Prt term to k)

In this post i summarize the initial problem and the procedure to determine the wall function value (i.e., the solution) for given ,, and .

We looked for a solution to the problem:

with:

...
Attached Files
 wallfn.txt (2.2 KB, 12 views)
Senior Member
Posted in Uncategorized

## A generalized thermal/dynamic wall function: Part 2

Posted October 17, 2016 at 08:24 by sbaffini (NuTBox)
Updated October 17, 2016 at 10:52 by sbaffini

In the first part of this post we left with the problem of computing the following integral:

with:

I added all the explicit functional dependencies here because we know ...
Senior Member
Posted in Uncategorized

## A generalized thermal/dynamic wall function: Part 1

Posted October 14, 2016 at 12:27 by sbaffini (NuTBox)
Updated October 17, 2016 at 13:50 by sbaffini (Corrected an error in the definition of FT+ and put the equations in the velocity form)

In a previous post i wrote about an extension of the Reichardt law of the wall to pressure gradient effects. That was derived by assuming the Reichardt profile as a solution for the case without pressure gradient and using integration by parts. In particular, given the the Reichardt function ( is the Von Karman constant):

with:
...
Senior Member
Posted in Uncategorized

## pimpleFoam vs simpleFoam vs pisoFoam vs icoFoam?

Posted October 14, 2016 at 11:27 by kindle
Updated Today at 11:37 by kindle

Quite confusing sometime !

But, why is that a problem needs boundary condition for U and p and all the other possible variables?

pisoFoam has relaxation coef while icoFoam does not have this.
Quote:
UEqn.relax();

Quote:
Originally Posted by ata
Hi
icoFoam is transient solver for incompressible, laminar flow of Newtonian fluids.

pimpleFoam is large time-step transient solver for incompressible, flow using the PIMPLE(merged PISO-SIMPLE) algorithm.
...
New Member
Posted in solver

## Viscoelastic Fluid Flows using OpenFOAM The solver viscoelasticFluidFoam

Posted October 14, 2016 at 11:27 by kindle

This guy use Openfoam and FENE-P !!!

Quote:
Originally Posted by mmasoudian
Dear ata
I compiled everything and I changed fvSolutions as you mentioned in forum but when I want to run a case (FENE-P): the error is:

mam@ubuntu:~/OpenFOAM/mam-2.0.0/RUN/tutorials/incompressible/viscoelasticFluidFoam/FENE-P\$ viscoelasticFluidFoam
/*---------------------------------------------------------------------------*\
| ========= |
...
New Member
Posted in Viscoelastic