add private function in solver

pyTurbulence/solver.py

@@ -22,7 +22,7 @@ def solve(user_params)->dict:
     """    
 
     # Validate the input parameters
-    params = validate_params(user_params)
+    params = _validate_params(user_params)
 
     # Read the params dictionary
     nbModes = params["nbModes"]
@@ -99,7 +99,7 @@ def solve(user_params)->dict:
     }
 
     # Write the log file
-    write_log_file(params, results)
+    _write_log_file(params, results)
 
     # Dictionary containing the results of the simulation
     data = {
@@ -116,7 +116,7 @@ def solve(user_params)->dict:
 
     return data
 
-def validate_params(params) -> dict:
+def _validate_params(params) -> dict:
     """
     Validate the input parameters dictionary, set default values where needed, enforce allowed values, and check numeric ranges.
 
@@ -229,7 +229,7 @@ def validate_params(params) -> dict:
 
     return validated_params
 
-def get_metadata()->dict:
+def _get_metadata()->dict:
     metadata = {
         "code_name": "~~~ pyTurbulence: Synthetic Turbulence Generator ~~~",
         "author": "Amaury Bilocq",
@@ -237,7 +237,7 @@ def get_metadata()->dict:
     }
     return metadata
 
-def write_log_file(params, results):
+def _write_log_file(params, results):
     """
     Write the log file with metadata, parameters, and results.
 
@@ -251,7 +251,7 @@ def write_log_file(params, results):
         Dictionary containing the results of the simulation.
     """
     log_file = os.path.join(params["output_dir"], "log.txt")
-    metadata = get_metadata()
+    metadata = _get_metadata()
 
     with open(log_file, "w") as f:
         # Display metadata