Internal mesh
 

Hi,

I would like to perform some operations on the internal mesh only. I used the following code, but it also changes my boundary condition. How can I get access to internal mesh only. Need help please.

Thanks.

Anyone has any comment or idea.

What about
FC.internalField()=k1.value()*C.internalField()/(k2.value()+C.internalFied()) ? If this compiles it shall do what you want

Thanks, it compiled. But it did not solve my problem.

I am solving for a concentration in a box with dimension 1 x 1 x 0.5 mm^3. I set all sides and bottom with zeroGradient B.C. and top with uniform value of 1. Initially I set the initial internal field as ZERO. When I run my case it also changes the values in all sides, it supposed to be zero. I thought that may be it is changing due to my operation on every cell as mentioned above, therefore I wanted to try updating internal mesh only. But it did not work out.

Need help. Any suggestion. Thanks.

Reread your post carefully. Especially the parts "it's supposed to be zero" and "I set it to zeroGRADIENT".

Internal field is zero and all side walls has zeroGradient.
What I don't understand is that, why the values at walls are changing?