[Sean95]

I am working on a CHT model with four regions, I looking for some help with the changeDictionaryDict file. How would I go about setting it up for a particular region based on my U,p,etc files. Below is the U file, everything is either specified as a wall or cyclicAMI in the boundary file. Any help would be greatly appreciated as this is last step before I can run the sim

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  plus                                  |
|   \\  /    A nd           | Web:      www.OpenFOAM.com                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       volVectorField;
    location    "0";
    object      U;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //


dimensions      [0 1 -1 0 0 0 0];

internalField   uniform (0 0 0);

boundaryField
{
    refractory_to_fluid_domain
    {
        type            noSlip;
    }
	
	head_can_to_fluid_domain
    {
        type            noSlip;
    }
	
	heat_acceptor_to_fluid_domain
    {
        type            noSlip;
    }
	
	refractory_right
    {
        type            cyclicAMI;
    }
	
	refractory_left
    {
        type            cyclicAMI;
    }
	
	refractory_exterior
    {
        type            noSlip;
    }
	
	fluid_domain_right
    {
        type            cyclicAMI;
    }
	
	fluid_domain_left
    {
        type            cyclicAMI;
    }
	
	fluid_domain_bottom
    {
        type            noSlip;
    }

    inlet
    {
        type            fixedValue;
        value      	  uniform (-0.35 0 0);
    }

    outlet
    {
        type            zeroGradient;
    }
	
	heat_acceptor_left
    {
        type            cyclicAMI;
    }
	
	heat_acceptor_right
    {
        type            cyclicAMI;
    }
	
	head_can_left
    {
        type            cyclicAMI;
    }
	
	head_can_right
    {
        type            cyclicAMI;
    }
	
	head_can_to_interior_heat_acceptor
    {
        type            noSlip;
    }
	
	head_can_interior
    {
        type            noSlip;
    }
	
	head_can_bottom
    {
        type            noSlip;
    }
}


// ************************************************************************* //

[kandelabr]

It's in the snappyMultiRegionHeater tutorial: https://github.com/OpenFOAM/OpenFOAM...DictionaryDict

Check changeDictionaryDicts for other regions as well.

Also a useful tool for setting up CHT cases is about to be released with a new version but for now you can use templates in the -dev version. They are very helpful even without the setup tool: https://github.com/OpenFOAM/OpenFOAM...singleFluidCHT