FoamFile
{
format          ascii;
class           volVectorField;
object          U;
}

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

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

internalField   uniform (0 0 0);

boundaryField   
{
down            
{
type            symmetryPlane;
}
right           
{
type            zeroGradient;
}
up              
{
type            symmetryPlane;
}
left            
{
type            uniformFixedValue;
uniformValue    constant (1 0 0);
}
cylinder        
{
type            symmetry;
}
defaultFaces    
{
type            empty;
}
}