diff --git a/compressible_flow/NICFD_nozzle/PhysicsInformed/0:generate_config.py b/compressible_flow/NICFD_nozzle/PhysicsInformed/0_generate_config.py
similarity index 97%
rename from compressible_flow/NICFD_nozzle/PhysicsInformed/0:generate_config.py
rename to compressible_flow/NICFD_nozzle/PhysicsInformed/0_generate_config.py
index 0fabee8..d49e280 100644
--- a/compressible_flow/NICFD_nozzle/PhysicsInformed/0:generate_config.py
+++ b/compressible_flow/NICFD_nozzle/PhysicsInformed/0_generate_config.py
@@ -7,7 +7,7 @@
 #       #                                                                            #        #
 ###############################################################################################
 
-############################# FILE NAME: 0:generate_config.py #################################
+############################# FILE NAME: 0_generate_config.py #################################
 #=============================================================================================#
 # author: Evert Bunschoten                                                                    |
 #    :PhD Candidate ,                                                                         |
@@ -41,4 +41,4 @@
 # Display configuration settings and save config object.
 Config.SetConfigName("SU2DataMiner_MM")
 Config.PrintBanner()
-Config.SaveConfig()
\ No newline at end of file
+Config.SaveConfig()
diff --git a/compressible_flow/NICFD_nozzle/PhysicsInformed/1:generate_fluid_data.py b/compressible_flow/NICFD_nozzle/PhysicsInformed/1_generate_fluid_data.py
similarity index 97%
rename from compressible_flow/NICFD_nozzle/PhysicsInformed/1:generate_fluid_data.py
rename to compressible_flow/NICFD_nozzle/PhysicsInformed/1_generate_fluid_data.py
index b67bd35..8e3d98f 100644
--- a/compressible_flow/NICFD_nozzle/PhysicsInformed/1:generate_fluid_data.py
+++ b/compressible_flow/NICFD_nozzle/PhysicsInformed/1_generate_fluid_data.py
@@ -7,7 +7,7 @@
 #       #                                                                            #        #
 ###############################################################################################
 
-########################### FILE NAME: 1:generate_fluid_data.py ###############################
+########################### FILE NAME: 1_generate_fluid_data.py ###############################
 #=============================================================================================#
 # author: Evert Bunschoten                                                                    |
 #    :PhD Candidate ,                                                                         |
diff --git a/compressible_flow/NICFD_nozzle/PhysicsInformed/2:train_PINN.py b/compressible_flow/NICFD_nozzle/PhysicsInformed/2_train_PINN.py
similarity index 97%
rename from compressible_flow/NICFD_nozzle/PhysicsInformed/2:train_PINN.py
rename to compressible_flow/NICFD_nozzle/PhysicsInformed/2_train_PINN.py
index 86a7111..37b9f18 100644
--- a/compressible_flow/NICFD_nozzle/PhysicsInformed/2:train_PINN.py
+++ b/compressible_flow/NICFD_nozzle/PhysicsInformed/2_train_PINN.py
@@ -7,7 +7,7 @@
 #       #                                                                            #        #
 ###############################################################################################
 
-################################ FILE NAME: 2:train_PINN.py ###################################
+################################ FILE NAME: 2_train_PINN.py ###################################
 #=============================================================================================#
 # author: Evert Bunschoten                                                                    |
 #    :PhD Candidate ,                                                                         |
@@ -50,4 +50,4 @@
 Eval.TrainPostprocessing()
 
 Config.UpdateMLPHyperParams(Eval)
-Config.SaveConfig()
\ No newline at end of file
+Config.SaveConfig()
diff --git a/compressible_flow/NICFD_nozzle/PhysicsInformed/3:run_SU2.py b/compressible_flow/NICFD_nozzle/PhysicsInformed/3_run_SU2.py
similarity index 98%
rename from compressible_flow/NICFD_nozzle/PhysicsInformed/3:run_SU2.py
rename to compressible_flow/NICFD_nozzle/PhysicsInformed/3_run_SU2.py
index ceb07d4..445c833 100644
--- a/compressible_flow/NICFD_nozzle/PhysicsInformed/3:run_SU2.py
+++ b/compressible_flow/NICFD_nozzle/PhysicsInformed/3_run_SU2.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 
-## \file 3:run_SU2.py
+## \file 3_run_SU2.py
 #  \brief NICFD simulation of supersonic expansion of siloxane MM.
 #  \version 8.1.0 "Harrier"
 #
@@ -56,7 +56,7 @@ def WriteSU2Config(Config:Config_NICFD):
     su2_options = """ 
     %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
     %                                                                              %
-    % SU2 configuration file, automatically generated with "3:run_SU2.py"          %
+    % SU2 configuration file, automatically generated with "3_run_SU2.py"          %
     % Case description: Non-ideal compressible fluid flow in a converging-         %
     %                   diverging supersonic nozzle using a PINN for thermodynamic %
     %                   state calculations.                                        %
@@ -265,4 +265,4 @@ def GenerateMesh():
 # Initialize NICFD simulation.
 driver = pysu2.CSinglezoneDriver("config_NICFD_PINN.cfg",1, comm)
 driver.StartSolver()
-driver.Finalize()
\ No newline at end of file
+driver.Finalize()
diff --git a/compressible_flow/NICFD_nozzle/PhysicsInformed/config_NICFD_PINN.cfg b/compressible_flow/NICFD_nozzle/PhysicsInformed/config_NICFD_PINN.cfg
index 1884a2a..eee6860 100644
--- a/compressible_flow/NICFD_nozzle/PhysicsInformed/config_NICFD_PINN.cfg
+++ b/compressible_flow/NICFD_nozzle/PhysicsInformed/config_NICFD_PINN.cfg
@@ -1,6 +1,6 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %                                                                              %
-% SU2 configuration file, automatically generated with "3:run_SU2.py"          %
+% SU2 configuration file, automatically generated with "3_run_SU2.py"          %
 % Case description: Non-ideal compressible fluid flow in a converging-         %
 %                   diverging supersonic nozzle using a PINN for thermodynamic %
 %                   state calculations.                                        %