adding target_updated_ flag to WellNode

to save some repeated efforts when updating Well Targets.

opm/core/wells/WellCollection.cpp

@@ -294,13 +294,18 @@ namespace Opm
             return;
         }
 
+        // set the target_updated to be false
+        for (WellNode* well_node : leaf_nodes_) {
+            well_node->setTargetUpdated(false);
+        }
+
         // TODO: currently, we only handle the level of the well groups for the moment, i.e. the level just above wells
         // We believe the relations between groups are similar to the relations between different wells inside the same group.
         // While there will be somre more complication invloved for sure.
         for (size_t i = 0; i < leaf_nodes_.size(); ++i) {
             // find a node needs to update targets, then update targets for all the wellls inside the group.
             // if (leaf_nodes_[i]->shouldUpdateWellTargets() && !leaf_nodes_[i]->individualControl()) {
-            if (!leaf_nodes_[i]->individualControl()) {
+            if (!leaf_nodes_[i]->individualControl() && !leaf_nodes_[i]->targetUpdated()) {
                 WellsGroupInterface* parent_node = leaf_nodes_[i]->getParent();
                 // update the target within this group.
                 if (leaf_nodes_[i]->isProducer()) {

opm/core/wells/WellsGroup.cpp

@@ -792,6 +792,7 @@ namespace Opm
             if (!children_[i]->individualControl() && children_[i]->isProducer()) {
                 const double children_guide_rate = children_[i]->productionGuideRate(true);
                 children_[i]->applyProdGroupControl(prod_mode, (children_guide_rate / my_guide_rate) * rate_for_group_control, true);
+                children_[i]->setTargetUpdated(true);
             }
         }
     }
@@ -802,6 +803,11 @@ namespace Opm
         // Will finish it when having an examples with more than one injection wells within same injection group.
     }
 
+    void WellsGroup::setTargetUpdated(const bool /* flag */)
+    {
+        // do nothing
+    }
+
 
     bool WellsGroup::isProducer() const
     {
@@ -833,7 +839,8 @@ namespace Opm
           wells_(0),
           self_index_(-1),
           group_control_index_(-1),
-          shut_well_(true) // This is default for now
+          shut_well_(true), // This is default for now
+          target_updated_(false) // This is default for now, not sure whether to use the default value
     {
     }
 
@@ -1510,4 +1517,14 @@ namespace Opm
         return self_index_;
     }
 
+
+    bool WellNode::targetUpdated() const {
+        return target_updated_;
+    }
+
+
+    void WellNode::setTargetUpdated(const bool flag) {
+        target_updated_ = flag;
+    }
+
 }

opm/core/wells/WellsGroup.hpp

@@ -241,6 +241,8 @@ namespace Opm
 
         virtual void updateWellInjectionTargets(const std::vector<double>& well_rates) = 0;
 
+        virtual void setTargetUpdated(const bool flag) = 0;
+
         double efficiencyFactor() const;
 
         void setEfficiencyFactor(const double efficiency_factor);
@@ -370,6 +372,8 @@ namespace Opm
 
         virtual void updateWellInjectionTargets(const std::vector<double>& well_rates);
 
+        virtual void setTargetUpdated(const bool flag);
+
         /// Whether it is a production well
         /// Should only appy for WellNode
         virtual bool isProducer() const;
@@ -505,11 +509,17 @@ namespace Opm
 
         int selfIndex() const;
 
+        bool targetUpdated() const;
+
+        virtual void setTargetUpdated(const bool flag);
+
     private:
         Wells* wells_;
         int self_index_;
         int group_control_index_;
         bool shut_well_;
+        // TODO: used when updating well targets
+        bool target_updated_;
     };
 
     /// Creates the WellsGroupInterface for the given well