applications/solvers/compressible/sonicDyMFoam/UEqn.H

   1     fvVectorMatrix UEqn
   2     (
   3         fvm::ddt(rho, U)
   4       + fvm::div(phi, U)
   5       + turbulence->divDevRhoReff(U)
   6     );
   7
   8     UEqn.relax
   9     (
  10         mesh.solutionDict().relaxationFactor(U.select(pimple.finalIter()))
  11     );
  12
  13     solve(UEqn == -fvc::grad(p));