[Vinzmann]

Hi,

so I am using OF8 and I want to adaptively refine my mesh in areas where the magnitude of grad(p) is high. rhoCentralFoam does only take volScalarFields though. Since this is the case, how can I get this to work? Any help would be greatly appreciated. The output for rhoCentralFoam looks like this:

[0] 
[0] 
[0] --> FOAM FATAL ERROR: 
[0] 
    request for volScalarField mag(Grad(p)) from objectRegistry region0 failed
    available objects of type volScalarField are

20
(
thermo:mu
thermo:psi
rhoE_0
nut
yWall
rho
k
thermo:psi_0
e_0
alphat
rho_0
p
T
rhoE
k_0
p_0
e
omega
omega_0
thermo:alpha
)

My dynamicMeshDict looks like this:

FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    location    "system";
    object      dynamicMeshDict;
}

dynamicFvMesh		dynamicRefineFvMesh;

dynamicRefineFvMeshCoeffs
{
	refineInterval	5;
	field			mag(Grad(p));
	
	lowerRefineLevel	3e5;
	upperRefineLevel	4e5;
	
	unrefineLevel		1e5;
	
	nBufferLayers		5;
	
	maxRefinement		3;
	
	maxCells			1000000;
	
	correctFluxes
	(
		(phi U)
	
	);

	dumpLevel			true;


}

[Vinzmann]

So I've found a solution to this problem. Create two new functions in the controlDict. First a function giving grad(p) (you can look this up in the documentation for functionObjects) then another function to create mag of grad(p). This new field can be set in the dynamicMeshDict as the fild to work on.