FoamFile { version 2.0; format ascii; class volVectorField; object U; } dimensions [ 0 1 -1 0 0 0 0 ]; internalField uniform ( 0.1 0 0 ); boundaryField { interface { type noSlip; } inlet { type fixedValue; value $internalField; } outlet { type zeroGradient; } top { type slip; } bottom { type noSlip; } slip-bottom { type slip; } defaultFaces { type empty; } }