applications/solvers/solidMechanics/elasticThermalSolidFoam/calculateRelResU.H

   1 {
   2     // displacement
   3     scalar maxDU = gMax(mag(U.internalField() - U.oldTime().internalField()));
   4     relResU =
   5         gMax
   6         (
   7             mag(U.internalField() - U.prevIter().internalField())
   8            /(maxDU + SMALL)
   9         );
  10 }