Non-uniform transport properties in openFoam
 

Hello

In the dictionary transportProperties, we set transport properties that are constant. Does OpenFOAM have possibility to set non-uniform transport properties that are functions of coordinates and time?

For example, let me want to solve transport equation

\f[
\ddt{T} = \div ( D(x, t) \grad T )
\f]

If D is constant, I just will type in transportProperties, e.g., as follows:

D 0.1

But is there a possibility to set D as a function?

Yes variable transport is possible
 

The implementation is a bit tricky.
You need to create a separate header with function to modify the 'D'
at each cell value during runtime. you an take existing fields as input.

I did an implementation where i took the transport properties from a external source for multi-component transport model.

Thanks. Does it mean that, e.g., for solving the above equation I cannot use the laplacianFoam and need to build a new solver?

Hi, any update?

Is it possible to use something like this below (similar to initial condition)?

inlet
{

type uniformFixedValue;
uniformValue table
(
(0 (0 0 0))
(0.0008 (4270 0 0))
);
}