[oneD] Add unstrained-flow domain

Cantera · Apr 14, 2023 · ef8c935 · ef8c935
1 parent 708a8bf
commit ef8c935
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Showing 3 changed files with 27 additions and 8 deletions.
diff --git a/include/cantera/oneD/StFlow.h b/include/cantera/oneD/StFlow.h
@@ -171,21 +171,31 @@ class StFlow : public Domain1D
     virtual shared_ptr<SolutionArray> asArray(const double* soln) const;
     virtual void fromArray(SolutionArray& arr, double* soln);
 
-    //! Set flow configuration for freely-propagating flames, using an internal
-    //! point with a fixed temperature as the condition to determine the inlet
-    //! mass flux.
+    //! Set flow configuration for freely-propagating flames, using an internal point
+    //! with a fixed temperature as the condition to determine the inlet mass flux.
     void setFreeFlow() {
         m_type = cFreeFlow;
         m_dovisc = false;
         m_isFree = true;
+        m_usesLambda = false;
     }
 
-    //! Set flow configuration for axisymmetric counterflow or burner-stabilized
-    //! flames, using specified inlet mass fluxes.
+    //! Set flow configuration for axisymmetric counterflow flames, using specified
+    //! inlet mass fluxes.
     void setAxisymmetricFlow() {
         m_type = cAxisymmetricStagnationFlow;
         m_dovisc = true;
         m_isFree = false;
+        m_usesLambda = true;
+    }
+
+    //! Set flow configuration for burner-stabilized flames, using specified inlet mass
+    //! fluxes.
+    void setUnstrainedFlow() {
+        m_type = cAxisymmetricStagnationFlow;
+        m_dovisc = false;
+        m_isFree = false;
+        m_usesLambda = false;
     }
 
     //! Return the type of flow domain being represented, either "Free Flame" or
@@ -482,6 +492,7 @@ class StFlow : public Domain1D
 
     bool m_dovisc;
     bool m_isFree;
+    bool m_usesLambda;
 
     //! Update the transport properties at grid points in the range from `j0`
     //! to `j1`, based on solution `x`.

diff --git a/src/oneD/DomainFactory.cpp b/src/oneD/DomainFactory.cpp
@@ -53,6 +53,11 @@ DomainFactory::DomainFactory()
         ret->setAxisymmetricFlow();
         return ret;
     });
+    reg("unstrained-flow", [](shared_ptr<Solution> solution, const string& id) {
+        StFlow* ret = new StFlow(solution, id);
+        ret->setUnstrainedFlow();
+        return ret;
+    });
 }
 
 DomainFactory* DomainFactory::factory()

diff --git a/src/oneD/StFlow.cpp b/src/oneD/StFlow.cpp
@@ -132,7 +132,10 @@ string StFlow::type() const {
     if (m_isFree) {
         return "free-flow";
     }
-    return "axisymmetric-flow";
+    if (m_usesLambda) {
+        return "axisymmetric-flow";
+    }
+    return "unstrained-flow";
 }
 
 void StFlow::setThermo(IdealGasPhase& th) {
@@ -730,9 +733,9 @@ bool StFlow::componentActive(size_t n) const
 {
     switch (n) {
     case c_offset_V: // spread_rate
-        return !m_isFree;
+        return m_usesLambda;
     case c_offset_L: // lambda
-        return !m_isFree;
+        return m_usesLambda;
     case c_offset_E: // eField
         return false;
     default: