Update app.py

app.py

@@ -87,7 +87,7 @@ def llm_explain(record: dict) -> str:
     regime = "laminar" if Re_avg < 2300 else "turbulent"
     return f"Pump head {comp['pump_head']:.3f} m, f={inter['friction_factor']:.4f}, h_f={inter['head_loss']:.3f} m. Flow regime: {regime}."
 
-def compute_and_explain(P1,P2,V1,V2,z1,z2,rho,mu,D,L,roughness,use_darcy,_,mode):
+def compute_and_explain(P1,P2,V1,V2,z1,z2,rho,mu,D,L,roughness,use_darcy,mode):
     record = bernoulli_pipe_flow(P1,P2,V1,V2,z1,z2,rho,mu,roughness,D,L,None,use_darcy)
     if not record.get('ok'):
         return record, 'Errors: ' + '; '.join(record.get('errors', []))