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Forum: OpenFOAM

January 5, 2012, 13:35

Replies: 13

Near Wall Parallel Derivatives at First Grid Node

Views: 2,275

Posted By doubtsincfd

you can write in the following way (tho not the...

you can write in the following way (tho not the cleanest way)
volVectorField gradP(fvc::grad(P));

const fvPatchList& patches = mesh.boundary();
forAll(patches,patchi)
{
...

Forum: OpenFOAM

January 3, 2012, 16:30

Replies: 13

Near Wall Parallel Derivatives at First Grid Node

Views: 2,275

Posted By doubtsincfd

my understanding of the code is that Uadj will...

my understanding of the code is that Uadj will give velocity relative to the wall.
It is a little odd since velocity on the wall is zero so U will be zero.
The code for dynamic contact angle might...

Forum: OpenFOAM

January 3, 2012, 15:58

Replies: 13

Near Wall Parallel Derivatives at First Grid Node

Views: 2,275

Posted By doubtsincfd

Exactly. We will have to calculate gradient...

Exactly. We will have to calculate gradient throughout the field and then use patchInternalfield(). I will try that and get back to you in a day.

Forum: OpenFOAM

January 3, 2012, 15:32

Replies: 13

Near Wall Parallel Derivatives at First Grid Node

Views: 2,275

Posted By doubtsincfd

sample command will then write the derivatives on...

sample command will then write the derivatives on wall. But for calculating at first grid point, you will have to access data at the cell center adjacent to wall. If this is what you want then I can...

Forum: OpenFOAM

January 3, 2012, 15:30

Replies: 13

Near Wall Parallel Derivatives at First Grid Node

Views: 2,275

Posted By doubtsincfd

if you need gradients, then you can implement...

if you need gradients, then you can implement following in your code:
if (runTime.outputTime())
{
volVectorField gradp(fvc::grad(p));

volScalarField gradpx
(
...

Forum: OpenFOAM

January 3, 2012, 12:41

Replies: 13

Near Wall Parallel Derivatives at First Grid Node

Views: 2,275

Posted By doubtsincfd

look at this: ...

look at this:
/opt/openfoam210/src/transportModels/twoPhaseInterfaceProperties/alphaContactAngle/dynamicAlphaContactAngle

and
...

Forum: OpenFOAM

December 30, 2011, 02:20

Replies: 13

Near Wall Parallel Derivatives at First Grid Node

Views: 2,275

Posted By doubtsincfd

have a look for alphaDynamicContact angle. Its...

have a look for alphaDynamicContact angle. Its somewhere in interfaceProperties.C or some file I cant remember. I has the code for calculating velocity vector parallel to wall. The logic behind the...

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