[ashokmoravaneni]

Hi Lousi,
Thanks for coming back
Yes I m using OF4.1. There were no errors. And Yes I have specified type in U file.Actually why I have asked the above question is I wanted to apply partialSLip to moving wall but not slip to moving wall.

First I wanna know how to apply partialslip condition to moving wall. Is that possible in OF. I have applied like below,

type partialSlip;
value uniform (0 -0.5 0);
valueFraction 0.4;

But moving wall is not taking any velocity specified. (0 -0.5 0).

Thank you.

[louisgag]

Not sure my boundary condition can deal with partialSlip as I have never dealt with it.
-LouIs

[ashokmoravaneni]

Originally Posted by louisgag

Not sure my boundary condition can deal with partialSlip as I have never dealt with it.
-LouIs

Well Louis, Can you help me in implementing partial slip to moving wall in interFOAM. I have tried my best but not able to solve this Problem.

Thanks in advance.

[louisgag]

Ashok, it might be an interesting problem but it is out of my scope. I suggest you start a thread if you are looking for such support.

[ashokmoravaneni]

Ok Louis. I have already posted a new Thread two weeks back. Still waiting for appropriate Response.

Anyway Thanks for your Time

[nesca87]

Hi Louis,

I'm interested in implementing you BC code. However, there's something I don't understand due to the lack of OF experience.

If I copy it into my personal src directory, do I have to call it in the solvers' main source code and Make/options (as FOAM_USER_LIBBIN) that I want this BC to be applied (e.g interDyMFoam) and do I have to re-compile interDyMFoam solver again?

[louisgag]

Hi Helvines,
You do not have to recompile the solver, you'll have to add something like this to controlDict:

libs ("libmyFiniteVolume.so";

Look at the following test case:
https://github.com/louisgag/OpenFOAM...aster/testCase
Kind regards,
-Louis

[hiuluom]

Hi Louis,

I want to try your movingwallslip with table value as time-varying BC. But it only allows set uniform value.
Should it combine two BCs uniformFixedValue with movingwallSlip?
Because uniformFixedValue has table time varying value, but it is not moving wall.

I want a BC applied for wall with moving in time, using interDymFoam 4.x solver. Do you have idea for this type BC?

Kind regards

[louisgag]

Hi Huynh,


the BC I posted already computes the moving wall velocity, you don't need to use the timeVarying condition on top of it.


Kind regards

[hiuluom]

Hi Louis,

Thank your reply.
I want to set wall moving in time like this

[hiuluom]

Hi Louis,

Thank your reply.
I want to set wall moving in time like this

 type            uniformFixedValue;
        uniformValue    table
        (
            (0    (0    0    0))
            (0.2    (1.5    0    0))
            (0.4    (2.6    0    0))
            (0.6    (3.48    0    0))
            (0.8    (3.95    0    0))
            (0.9    (4.12    0    0))
            (1    (4.1    0    0))
            (1.1    (-0.125    0    0))
            (1.2    (-1.25    0    0))
            (1.4    (1.1    0    0))
            (1.45    (0    0    0))
            (1.5    (-0.52    0    0))
            (1.55    (-0.5    0    0))
            (1.6    (-0.1    0    0))
            (1.7    (0.6    0    0))
            (1.75    (0.62    0    0))
            (1.8    (0    0    0))
            (2    (0    0    0))
			(200    (0    0    0))
        );
        value           $initialField;

I am using uniformFixedValue but the wall was not moved following time. After 100s, it still moves. That is reason I want to check your BC with time varying.

[irwin]

Hi Louis,
I am using openfom8 , I have complied your code successfully without any error however when i apply it in my U file it is showing error :

--> FOAM FATAL IO ERROR:
Unknown patchField type myMovingWallSlip for patch type wall

kindly help

Thanks,
Irwin

[louisgag]

Hi, you probably did not load the library you compiled.
Try correcting your controlDict accordingly.

[irwin]

Thanks a lot.
its working now

[mostanad]

Originally Posted by louisgag

Hi, you probably did not load the library you compiled.
Try correcting your controlDict accordingly.

Hi Louis,
Sorry for my basic questions. I can't understand something in this type of Boundary conditions. It is still stress-free (zero gradient tangential velocity), but with a desired velocity value? I mean the moving wall condition is only implemented on both tangential and normal velocities or only the tangential velocity?
Second thing is the boundary type for that. Is this a patch type or wall type?

Cheers,
Mohammad

[irwin]

Hi Louis,
how to introduce slip when wall is already moving with some velocity ( couette flow) ?

Thanks,
Irwin