hRhoThermo: Added 7th-order polynomial incompressible thermo

src/thermophysicalModels/basic/mixtures/basicMixture/basicMixtures.C

@@ -113,6 +113,12 @@ makeBasicPolyMixture
     3
 );
 
+makeBasicPolyMixture
+(
+    pureMixture,
+    8
+);
+
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 } // End namespace Foam

src/thermophysicalModels/basic/rhoThermo/hRhoThermo/hRhoThermos.C

@@ -92,6 +92,13 @@ makeBasicRhoPolyThermo
     3
 );
 
+makeBasicRhoPolyThermo
+(
+    hRhoThermo,
+    pureMixture,
+    8
+);
+
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 } // End namespace Foam