[kepsilon][problem] Use std::abs and std::log

dumux/freeflow/rans/twoeq/kepsilon/problem.hh

@@ -325,6 +325,7 @@ public:
                                       const SubControlVolumeFace& scvf,
                                       const SubControlVolumeFace& localSubFace) const
     {
+        using std::abs;
         unsigned int elementID = asImp_().fvGridGeometry().elementMapper().index(element);
         return FacePrimaryVariables(asImp_().tangentialMomentumWallFunction(elementID, abs(elemFaceVars[scvf].velocitySelf()))
                                     * elemVolVars[scvf.insideScvIdx()].density());
@@ -380,6 +381,7 @@ public:
                                                      const ElementFaceVariables& elemFaceVars,
                                                      const SubControlVolumeFace& scvf) const
     {
+        using std::log;
         auto wallFunctionFlux = CellCenterPrimaryVariables(0.0);
         unsigned int elementID = asImp_().fvGridGeometry().elementMapper().index(element);
 
@@ -414,6 +416,7 @@ public:
                                                   const ElementFaceVariables& elemFaceVars,
                                                   const SubControlVolumeFace& scvf) const
     {
+        using std::log;
         auto wallFunctionFlux = CellCenterPrimaryVariables(0.0);
         unsigned int elementID = asImp_().fvGridGeometry().elementMapper().index(element);
         // energy fluxes