Update SU2_CFD/src/solvers/CTurbSSTSolver.cpp

Co-authored-by: Pedro Gomes <38071223+pcarruscag@users.noreply.github.com>

Author: Shubham shukla

SU2_CFD/src/solvers/CTurbSSTSolver.cpp

@@ -275,7 +275,7 @@ void CTurbSSTSolver::Postprocessing(CGeometry *geometry, CSolver **solver_contai
         const su2double FrictionVelocity = max(sqrt(shearStress/flowNodes->GetDensity(iPoint)), EPS);
         const su2double wall_dist = geometry->vertex[iMarker][iVertex]->GetNearestNeighborDistance();
 
-        const su2double Derivative = flowNodes->GetLaminarViscosity(jPoint) * pow(nodes->GetSolution(jPoint, 0), 0.673) / max(wall_dist, EPS);
+        const su2double Derivative = flowNodes->GetLaminarViscosity(jPoint) * pow(nodes->GetSolution(jPoint, 0), 0.673) / wall_dist;
         const su2double turbulence_index = 6.1 * Derivative / pow(FrictionVelocity, 2.346);
 
         nodes->SetTurbIndex(iPoint, turbulence_index);