const label sampleFrequency(propsDict.get< label >("sampleFrequency"))
const word cloudName(propsDict.get< word >("cloud"))
const word setFormat(propsDict.getOrDefault< word >("setFormat", "vtk"))
const label maxPositions(propsDict.get< label >("maxPositions"))
IOdictionary propsDict(IOobject("particleTrackProperties", runTime.constant(), mesh, IOobject::MUST_READ_IF_MODIFIED))