update

Author: EvenSol

src/neqsim/thermo/thermoTools.py

@@ -331,7 +331,9 @@ def fluid(name="srk", temperature=298.15, pressure=1.01325):
     Returns:
     object: An instance of the specified thermodynamic fluid system.
     """
-    fluid_function = fluid_type.get(name, jneqsim.thermo.system.SystemSrkEos)
+    if name not in fluid_type:
+        raise ValueError(f"Fluid model {name} not found. Available models are {list(fluid_type.keys())}")
+    fluid_function = fluid_type[name]
     return fluid_function(temperature, pressure)