diff --git a/src/finiteVolume/fields/fvPatchFields/derived/repetitivePulseFixedValue/repetitivePulseFixedValueFvPatchField.C b/src/finiteVolume/fields/fvPatchFields/derived/repetitivePulseFixedValue/repetitivePulseFixedValueFvPatchField.C
index 5a19c438..a26d2594 100644
--- a/src/finiteVolume/fields/fvPatchFields/derived/repetitivePulseFixedValue/repetitivePulseFixedValueFvPatchField.C
+++ b/src/finiteVolume/fields/fvPatchFields/derived/repetitivePulseFixedValue/repetitivePulseFixedValueFvPatchField.C
@@ -38,9 +38,16 @@ scalar repetitivePulseFixedValueFvPatchField<Type>::currentScale() const
 {
     const scalar t = this->db().time().timeOutputValue();
     const scalar a = amplitude_->value(t);
-    const scalar f = frequency_->value(t);
+    // const scalar f = frequency_->value(t);
+    const scalar f = pulseFrequency_;
+    const scalar tau = pulseDuration_;
 
-    return 1.0 + a*sin(constant::mathematical::twoPi*f*t);
+    const scalar neg_saw_t = (t - ceil(t*f)/f);
+    const scalar phi =  neg_saw_t * constant::mathematical::pi / (2.0*tau) ;
+    const scalar sine = neg_saw_t > -2.0 * tau ? sin(phi) : 0.0;
+
+    // return 1.0 + a*sin(constant::mathematical::twoPi*f*t);
+    return a*sine*sine;
 }
 
 
@@ -54,10 +61,11 @@ repetitivePulseFixedValueFvPatchField<Type>::repetitivePulseFixedValueFvPatchFie
 )
 :
     fixedValueFvPatchField<Type>(p, iF),
-    refValue_(p.size()),
+    peakValue_(p.size()),
     offset_(pTraits<Type>::zero),
     amplitude_(),
-    frequency_(),
+    pulseFrequency_(),
+    pulseDuration_(),
     curTimeIndex_(-1)
 {}
 
@@ -72,10 +80,11 @@ repetitivePulseFixedValueFvPatchField<Type>::repetitivePulseFixedValueFvPatchFie
 )
 :
     fixedValueFvPatchField<Type>(ptf, p, iF, mapper),
-    refValue_(ptf.refValue_, mapper),
+    peakValue_(ptf.peakValue_, mapper),
     offset_(ptf.offset_),
     amplitude_(ptf.amplitude_().clone().ptr()),
-    frequency_(ptf.frequency_().clone().ptr()),
+    pulseFrequency_(ptf.pulseFrequency_),
+    pulseDuration_(ptf.pulseDuration_),
     curTimeIndex_(-1)
 {}
 
@@ -89,10 +98,11 @@ repetitivePulseFixedValueFvPatchField<Type>::repetitivePulseFixedValueFvPatchFie
 )
 :
     fixedValueFvPatchField<Type>(p, iF),
-    refValue_("refValue", dict, p.size()),
+    peakValue_("peakValue", dict, p.size()),
     offset_(dict.lookupOrDefault<Type>("offset", pTraits<Type>::zero)),
     amplitude_(DataEntry<scalar>::New("amplitude", dict)),
-    frequency_(DataEntry<scalar>::New("frequency", dict)),
+    pulseFrequency_(pTraits<scalar>(dict.lookup("pulseFrequency"))),
+    pulseDuration_(pTraits<scalar>(dict.lookup("pulseDuration"))),
     curTimeIndex_(-1)
 {
     if (dict.found("value"))
@@ -106,7 +116,7 @@ repetitivePulseFixedValueFvPatchField<Type>::repetitivePulseFixedValueFvPatchFie
     {
         fixedValueFvPatchField<Type>::operator==
         (
-            refValue_*currentScale()
+            peakValue_*currentScale()
           + offset_
         );
     }
@@ -120,10 +130,11 @@ repetitivePulseFixedValueFvPatchField<Type>::repetitivePulseFixedValueFvPatchFie
 )
 :
     fixedValueFvPatchField<Type>(ptf),
-    refValue_(ptf.refValue_),
+    peakValue_(ptf.peakValue_),
     offset_(ptf.offset_),
     amplitude_(ptf.amplitude_().clone().ptr()),
-    frequency_(ptf.frequency_().clone().ptr()),
+    pulseFrequency_(ptf.pulseFrequency_),
+    pulseDuration_(ptf.pulseDuration_),
     curTimeIndex_(-1)
 {}
 
@@ -136,10 +147,11 @@ repetitivePulseFixedValueFvPatchField<Type>::repetitivePulseFixedValueFvPatchFie
 )
 :
     fixedValueFvPatchField<Type>(ptf, iF),
-    refValue_(ptf.refValue_),
+    peakValue_(ptf.peakValue_),
     offset_(ptf.offset_),
     amplitude_(ptf.amplitude_().clone().ptr()),
-    frequency_(ptf.frequency_().clone().ptr()),
+    pulseFrequency_(ptf.pulseFrequency_),
+    pulseDuration_(ptf.pulseDuration_),
     curTimeIndex_(-1)
 {}
 
@@ -153,7 +165,7 @@ void repetitivePulseFixedValueFvPatchField<Type>::autoMap
 )
 {
     fixedValueFvPatchField<Type>::autoMap(m);
-    refValue_.autoMap(m);
+    peakValue_.autoMap(m);
 }
 
 
@@ -169,7 +181,7 @@ void repetitivePulseFixedValueFvPatchField<Type>::rmap
     const repetitivePulseFixedValueFvPatchField<Type>& tiptf =
         refCast<const repetitivePulseFixedValueFvPatchField<Type> >(ptf);
 
-    refValue_.rmap(tiptf.refValue_, addr);
+    peakValue_.rmap(tiptf.peakValue_, addr);
 }
 
 
@@ -185,7 +197,7 @@ void repetitivePulseFixedValueFvPatchField<Type>::updateCoeffs()
     {
         fixedValueFvPatchField<Type>::operator==
         (
-            refValue_*currentScale()
+            peakValue_*currentScale()
           + offset_
         );
 
@@ -200,10 +212,11 @@ template<class Type>
 void repetitivePulseFixedValueFvPatchField<Type>::write(Ostream& os) const
 {
     fixedValueFvPatchField<Type>::write(os);
-    refValue_.writeEntry("refValue", os);
+    peakValue_.writeEntry("peakValue", os);
     os.writeKeyword("offset") << offset_ << token::END_STATEMENT << nl;
     amplitude_->writeData(os);
-    frequency_->writeData(os);
+    os.writeKeyword("pulseFrequency") << pulseFrequency_ << token::END_STATEMENT << nl;
+    os.writeKeyword("pulseDuration") << pulseDuration_ << token::END_STATEMENT << nl;
 }
 
 
diff --git a/src/finiteVolume/fields/fvPatchFields/derived/repetitivePulseFixedValue/repetitivePulseFixedValueFvPatchField.H b/src/finiteVolume/fields/fvPatchFields/derived/repetitivePulseFixedValue/repetitivePulseFixedValueFvPatchField.H
index cec3e5f0..234cc99d 100644
--- a/src/finiteVolume/fields/fvPatchFields/derived/repetitivePulseFixedValue/repetitivePulseFixedValueFvPatchField.H
+++ b/src/finiteVolume/fields/fvPatchFields/derived/repetitivePulseFixedValue/repetitivePulseFixedValueFvPatchField.H
@@ -105,7 +105,7 @@ class repetitivePulseFixedValueFvPatchField
     // Private data
 
         //- Reference value
-        Field<Type> refValue_;
+        Field<Type> peakValue_;
 
         //- Offset
         Type offset_;
@@ -113,8 +113,11 @@ class repetitivePulseFixedValueFvPatchField
         //- Amplitude
         autoPtr<DataEntry<scalar> > amplitude_;
 
-        //- Frequency
-        autoPtr<DataEntry<scalar> > frequency_;
+        //- Pulse Frequency
+        scalar pulseFrequency_;
+
+        //- Pulse Duration
+        scalar pulseDuration_;
 
         //- Current time index
         label curTimeIndex_;
@@ -199,15 +202,15 @@ public:
         // Access
 
             //- Return the ref value
-            const Field<Type>& refValue() const
+            const Field<Type>& peakValue() const
             {
-                return refValue_;
+                return peakValue_;
             }
 
             //- Return reference to the ref value to allow adjustment
-            Field<Type>& refValue()
+            Field<Type>& peakValue()
             {
-                return refValue_;
+                return peakValue_;
             }
 
             //- Return amplitude
@@ -221,15 +224,26 @@ public:
                 return amplitude_;
             }
 
-            //- Return frequency
-            scalar frequency() const
+            //- Return pulse frequency
+            scalar pulseFrequency() const
             {
-                return frequency_;
+                return pulseFrequency_;
             }
 
-            scalar& frequency()
+            scalar& pulseFrequency()
             {
-                return frequency_;
+                return pulseFrequency_;
+            }
+
+            //- Return pulse duration
+            scalar pulseDuration() const
+            {
+                return pulseDuration_;
+            }
+
+            scalar& pulseDuration()
+            {
+                return pulseDuration_;
             }