[richards] Use new chop property to speed up convergene with the implemented chop algo

dumux/porousmediumflow/richards/implicit/newtoncontroller.hh

@@ -80,7 +80,8 @@ public:
     {
         ParentType::newtonUpdate(uCurrentIter, uLastIter, deltaU);
 
-        if ((!GET_PARAM_FROM_GROUP(TypeTag, bool, Newton, UseLineSearch)))
+        if ((!GET_PARAM_FROM_GROUP(TypeTag, bool, Newton, UseLineSearch))
+            && GET_PARAM_FROM_GROUP(TypeTag, bool, Newton, EnableChop ))
         {
             // do not clamp anything after 5 iterations
             if (this->numSteps_ > 4)

test/porousmediumflow/richards/implicit/test_boxrichards.input

@@ -11,8 +11,9 @@ Name = richardslensbox
 EnableGravity = 1 # enable gravity
 
 [Implicit]
-EnablePartialReassemble = 1 # enable partial reassembly of the Jacobian matrix
-EnableJacobianRecycling = 1 #
+EnablePartialReassemble = true # enable partial reassembly of the Jacobian matrix
+EnableJacobianRecycling = true #
 
 [Newton]
 TargetSteps = 18 # set the "desireable" number of newton iterations of a time step
+EnableChop = true # chop for better convergence

test/porousmediumflow/richards/implicit/test_ccrichards.input

@@ -11,8 +11,9 @@ Name = richardslenscc
 EnableGravity = 1 # enable gravity
 
 [Implicit]
-EnablePartialReassemble = 1 # enable partial reassembly of the Jacobian matrix
-EnableJacobianRecycling = 1 #
+EnablePartialReassemble = true # enable partial reassembly of the Jacobian matrix
+EnableJacobianRecycling = true #
 
 [Newton]
 TargetSteps = 18 # set the "desireable" number of newton iterations of a time step
+EnableChop = true # chop for better convergence