diff --git a/src/OpenFOAM/db/functionObjects/functionObjectList/functionObjectList.C b/src/OpenFOAM/db/functionObjects/functionObjectList/functionObjectList.C
index d64e264eda..4326acf5be 100644
--- a/src/OpenFOAM/db/functionObjects/functionObjectList/functionObjectList.C
+++ b/src/OpenFOAM/db/functionObjects/functionObjectList/functionObjectList.C
@@ -73,7 +73,7 @@ Foam::functionObject* Foam::functionObjectList::remove
     label& oldIndex
 )
 {
-    functionObject* ptr = 0;
+    functionObject* ptr = nullptr;
 
     // Find index of existing functionObject
     HashTable<label>::iterator fnd = indices_.find(key);
diff --git a/src/OpenFOAM/memory/Xfer/Xfer.H b/src/OpenFOAM/memory/Xfer/Xfer.H
index 615712d610..33dfec7463 100644
--- a/src/OpenFOAM/memory/Xfer/Xfer.H
+++ b/src/OpenFOAM/memory/Xfer/Xfer.H
@@ -100,7 +100,7 @@ public:
 
         //- Store object pointer and manage its deletion
         //  Can also be used later to transfer by assignment
-        inline explicit Xfer(T* p = 0);
+        inline explicit Xfer(T* p = nullptr);
 
         //- Construct by copying or by transferring the parameter contents
         inline explicit Xfer(T& t, bool allowTransfer=false);
@@ -144,20 +144,20 @@ public:
 //
 //  \sa xferCopyTo, xferMove, xferMoveTo, xferTmp and Foam::Xfer
 template<class T>
-inline Xfer<T> xferCopy(const T&);
+inline Xfer<T> xferCopy(const T& t);
 
 //- Construct by transferring the contents of the \a arg
 //
 //  \sa xferCopy, xferCopyTo, xferMoveTo, xferTmp and Foam::Xfer
 template<class T>
-inline Xfer<T> xferMove(T&);
+inline Xfer<T> xferMove(T& t);
 
 
 //- Construct by transferring the contents of the \a arg
 //
 //  \sa xferCopy, xferCopyTo, xferMove, xferMoveTo and Foam::Xfer
 template<class T>
-inline Xfer<T> xferTmp(Foam::tmp<T>&);
+inline Xfer<T> xferTmp(Foam::tmp<T>& tt);
 
 
 //- Construct by copying the contents of the \a arg
@@ -165,7 +165,7 @@ inline Xfer<T> xferTmp(Foam::tmp<T>&);
 //
 //  \sa xferCopy, xferMove, xferMoveTo, xferTmp and Foam::Xfer
 template<class To, class From>
-inline Xfer<To> xferCopyTo(const From&);
+inline Xfer<To> xferCopyTo(const From& t);
 
 
 //- Construct by transferring the contents of the \a arg
@@ -180,7 +180,7 @@ inline Xfer<To> xferCopyTo(const From&);
 //
 //  \sa xferCopy, xferCopyTo, xferMove, xferTmp and Foam::Xfer
 template<class To, class From>
-inline Xfer<To> xferMoveTo(From&);
+inline Xfer<To> xferMoveTo(From& t);
 
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
diff --git a/src/OpenFOAM/memory/Xfer/XferI.H b/src/OpenFOAM/memory/Xfer/XferI.H
index eddfa5cd18..26e11724db 100644
--- a/src/OpenFOAM/memory/Xfer/XferI.H
+++ b/src/OpenFOAM/memory/Xfer/XferI.H
@@ -83,7 +83,7 @@ template<class T>
 inline Foam::Xfer<T>::~Xfer()
 {
     delete ptr_;
-    ptr_ = 0;
+    ptr_ = nullptr;
 }
 
 
diff --git a/src/OpenFOAM/memory/autoPtr/autoPtr.H b/src/OpenFOAM/memory/autoPtr/autoPtr.H
index 24be938dd9..bd90aafe8b 100644
--- a/src/OpenFOAM/memory/autoPtr/autoPtr.H
+++ b/src/OpenFOAM/memory/autoPtr/autoPtr.H
@@ -64,15 +64,15 @@ public:
     // Constructors
 
         //- Store object pointer
-        inline explicit autoPtr(T* = 0);
+        inline explicit autoPtr(T* p = nullptr);
 
         //- Construct as copy by transferring pointer to this autoPtr and
         //  setting the arguments pointer to nullptr
-        inline autoPtr(const autoPtr<T>&);
+        inline autoPtr(const autoPtr<T>& ap);
 
         //- Construct either by transferring pointer or cloning.
         //  Should only be called with type that supports cloning
-        inline autoPtr(const autoPtr<T>&, const bool reuse);
+        inline autoPtr(const autoPtr<T>& ap, const bool reuse);
 
 
     //- Destructor, delete object if pointer is not nullptr
@@ -97,11 +97,11 @@ public:
 
             //- Set pointer to that given.
             //  If object pointer already set issue a FatalError
-            inline void set(T*);
+            inline void set(T* p);
 
             //- If object pointer already set, delete object and set to given
             //  pointer
-            inline void reset(T* = 0);
+            inline void reset(T* p = nullptr);
 
             //- Delete object (if the pointer is valid) and set pointer to
             //  nullptr
@@ -143,10 +143,10 @@ public:
             inline const T* operator->() const;
 
             //- Take over the object pointer from parameter
-            inline void operator=(T*);
+            inline void operator=(T* p);
 
             //- Take over the object pointer from parameter
-            inline void operator=(const autoPtr<T>&);
+            inline void operator=(const autoPtr<T>& ap);
 };
 
 
diff --git a/src/OpenFOAM/memory/autoPtr/autoPtrI.H b/src/OpenFOAM/memory/autoPtr/autoPtrI.H
index 746bce0d81..b9bfe2c9ae 100644
--- a/src/OpenFOAM/memory/autoPtr/autoPtrI.H
+++ b/src/OpenFOAM/memory/autoPtr/autoPtrI.H
@@ -40,7 +40,7 @@ inline Foam::autoPtr<T>::autoPtr(const autoPtr<T>& ap)
 :
     ptr_(ap.ptr_)
 {
-    ap.ptr_ = 0;
+    ap.ptr_ = nullptr;
 }
 
 
@@ -50,7 +50,7 @@ inline Foam::autoPtr<T>::autoPtr(const autoPtr<T>& ap, const bool reuse)
     if (reuse)
     {
         ptr_ = ap.ptr_;
-        ap.ptr_ = 0;
+        ap.ptr_ = nullptr;
     }
     else if (ap.valid())
     {
@@ -90,7 +90,7 @@ template<class T>
 inline T* Foam::autoPtr<T>::ptr()
 {
     T* ptr = ptr_;
-    ptr_ = 0;
+    ptr_ = nullptr;
     return ptr;
 }
 
@@ -125,7 +125,7 @@ inline void Foam::autoPtr<T>::reset(T* p)
 template<class T>
 inline void Foam::autoPtr<T>::clear()
 {
-    reset(0);
+    reset(nullptr);
 }
 
 
diff --git a/src/OpenFOAM/memory/tmp/tmp.H b/src/OpenFOAM/memory/tmp/tmp.H
index a337271c40..0da141b95a 100644
--- a/src/OpenFOAM/memory/tmp/tmp.H
+++ b/src/OpenFOAM/memory/tmp/tmp.H
@@ -84,19 +84,19 @@ public:
     // Constructors
 
         //- Store object pointer
-        inline explicit tmp(T* = 0);
+        inline explicit tmp(T* tPtr = nullptr);
 
         //- Store object const reference
-        inline tmp(const T&);
+        inline tmp(const T& tRef);
 
         //- Construct copy and increment reference count
-        inline tmp(const tmp<T>&);
+        inline tmp(const tmp<T>& t);
 
         //- Construct copy moving content, does not increment reference count
-        inline tmp(const tmp<T>&&);
+        inline tmp(const tmp<T>&& t);
 
         //- Construct copy transferring content of temporary if required
-        inline tmp(const tmp<T>&, bool allowTransfer);
+        inline tmp(const tmp<T>& t, bool allowTransfer);
 
 
     //- Destructor: deletes temporary object when the reference count is 0
@@ -159,10 +159,10 @@ public:
         inline const T* operator->() const;
 
         //- Assignment to pointer changing this tmp to a temporary T
-        inline void operator=(T*);
+        inline void operator=(T* tPtr);
 
         //- Assignment transfering the temporary T to this tmp
-        inline void operator=(const tmp<T>&);
+        inline void operator=(const tmp<T>& t);
 };
 
 
diff --git a/src/OpenFOAM/memory/tmp/tmpI.H b/src/OpenFOAM/memory/tmp/tmpI.H
index 7e5800dcbb..c3fa708372 100644
--- a/src/OpenFOAM/memory/tmp/tmpI.H
+++ b/src/OpenFOAM/memory/tmp/tmpI.H
@@ -99,7 +99,7 @@ inline Foam::tmp<T>::tmp(const tmp<T>&& t)
 {
     if (isTmp())
     {
-        t.ptr_ = 0;
+        t.ptr_ = nullptr;
     }
 }
 
@@ -116,7 +116,7 @@ inline Foam::tmp<T>::tmp(const tmp<T>& t, bool allowTransfer)
         {
             if (allowTransfer)
             {
-                t.ptr_ = 0;
+                t.ptr_ = nullptr;
             }
             else
             {
@@ -215,7 +215,7 @@ inline T* Foam::tmp<T>::ptr() const
         }
 
         T* ptr = ptr_;
-        ptr_ = 0;
+        ptr_ = nullptr;
 
         return ptr;
     }
@@ -234,12 +234,12 @@ inline void Foam::tmp<T>::clear() const
         if (ptr_->unique())
         {
             delete ptr_;
-            ptr_ = 0;
+            ptr_ = nullptr;
         }
         else
         {
             ptr_->operator--();
-            ptr_ = 0;
+            ptr_ = nullptr;
         }
     }
 }
@@ -372,7 +372,7 @@ inline void Foam::tmp<T>::operator=(const tmp<T>& t)
         }
 
         ptr_ = t.ptr_;
-        t.ptr_ = 0;
+        t.ptr_ = nullptr;
     }
     else
     {
diff --git a/src/OpenFOAM/memory/tmpNrc/tmpNrc.H b/src/OpenFOAM/memory/tmpNrc/tmpNrc.H
index d6b6df0c31..6aa3f91156 100644
--- a/src/OpenFOAM/memory/tmpNrc/tmpNrc.H
+++ b/src/OpenFOAM/memory/tmpNrc/tmpNrc.H
@@ -83,16 +83,16 @@ public:
     // Constructors
 
         //- Store object pointer
-        inline explicit tmpNrc(T* = 0);
+        inline explicit tmpNrc(T* tPtr = nullptr);
 
         //- Store object const reference
-        inline tmpNrc(const T&);
+        inline tmpNrc(const T& tRef);
 
         //- Construct copy and increment reference count
-        inline tmpNrc(const tmpNrc<T>&);
+        inline tmpNrc(const tmpNrc<T>& t);
 
         //- Construct copy transferring content of temporary if required
-        inline tmpNrc(const tmpNrc<T>&, bool allowTransfer);
+        inline tmpNrc(const tmpNrc<T>& t, bool allowTransfer);
 
 
     //- Destructor: deletes temporary object when the reference count is 0
@@ -149,10 +149,10 @@ public:
         inline const T* operator->() const;
 
         //- Assignment to pointer changing this tmpNrc to a temporary T
-        inline void operator=(T*);
+        inline void operator=(T* tPtr);
 
-        //- Assignment transfering the temporary T to this tmpNrc
-        inline void operator=(const tmpNrc<T>&);
+        //- Assignment transferring the temporary T to this tmpNrc
+        inline void operator=(const tmpNrc<T>& t);
 };
 
 
diff --git a/src/OpenFOAM/memory/tmpNrc/tmpNrcI.H b/src/OpenFOAM/memory/tmpNrc/tmpNrcI.H
index 00af03f852..fb9ec5de77 100644
--- a/src/OpenFOAM/memory/tmpNrc/tmpNrcI.H
+++ b/src/OpenFOAM/memory/tmpNrc/tmpNrcI.H
@@ -78,7 +78,7 @@ inline Foam::tmpNrc<T>::tmpNrc(const tmpNrc<T>& t, bool allowTransfer)
         {
             if (allowTransfer)
             {
-                t.ptr_ = 0;
+                t.ptr_ = nullptr;
             }
             else
             {
@@ -169,7 +169,7 @@ inline T* Foam::tmpNrc<T>::ptr() const
         }
 
         T* ptr = ptr_;
-        ptr_ = 0;
+        ptr_ = nullptr;
 
         return ptr;
     }
@@ -186,7 +186,7 @@ inline void Foam::tmpNrc<T>::clear() const
     if (isTmp() && ptr_)
     {
         delete ptr_;
-        ptr_ = 0;
+        ptr_ = nullptr;
     }
 }
 
@@ -289,7 +289,7 @@ inline void Foam::tmpNrc<T>::operator=(const tmpNrc<T>& t)
         }
 
         ptr_ = t.ptr_;
-        t.ptr_ = 0;
+        t.ptr_ = nullptr;
     }
     else
     {