adding command line option full_timestep_initially_

when the option is true, for each report step, the size of the adaptive
time step always beginning with the size of the report step.

opm/simulators/timestepping/AdaptiveTimeStepping.hpp

@@ -87,6 +87,7 @@ namespace Opm {
         const bool solver_verbose_;           //!< solver verbosity
         const bool timestep_verbose_;         //!< timestep verbosity
         double last_timestep_;                //!< size of last timestep
+        bool full_timestep_initially_;        //!< beginning with the size of the time step from data file
     };
 }
 

opm/simulators/timestepping/AdaptiveTimeStepping_impl.hpp

@@ -44,6 +44,7 @@ namespace Opm {
         , solver_restart_max_( param.getDefault("solver.restart", int(10) ) )
         , solver_verbose_( param.getDefault("solver.verbose", bool(true) ) )
         , timestep_verbose_( param.getDefault("timestep.verbose", bool(true) ) )
+        , full_timestep_initially_( param.getDefault("full_timestep_initially", bool(false) ) )
         , last_timestep_( -1.0 )
     {
         // valid are "pid" and "pid+iteration"
@@ -105,6 +106,10 @@ namespace Opm {
             last_timestep_ = restart_factor_ * timestep;
         }
 
+        if (full_timestep_initially_) {
+            last_timestep_ = timestep;
+        }
+
         // TODO
         // take change in well state into account