#736 change T_ref to T_init

CHANGELOG.md

@@ -27,6 +27,7 @@
 
 ## Bug fixes
 
+-   Fixed bug with wrong temperature in initial conditions ([#737](https://github.com/pybamm-team/PyBaMM/pull/737))
 -   Improved flexibility of parameter values so that parameters (such as diffusivity or current) can be set as functions or scalars ([#723](https://github.com/pybamm-team/PyBaMM/pull/723))
 -   Fixed a bug where boundary conditions were sometimes handled incorrectly in 1+1D models ([#713](https://github.com/pybamm-team/PyBaMM/pull/713))
 -   Corrected a sign error in Dirichlet boundary conditions in the Finite Element Method ([#706](https://github.com/pybamm-team/PyBaMM/pull/706))

examples/scripts/DFN.py

@@ -9,7 +9,7 @@
 
 # load model
 model = pybamm.lithium_ion.DFN()
-
+model.convert_to_format = "python"
 # create geometry
 geometry = model.default_geometry
 

pybamm/models/submodels/current_collector/set_potential_single_particle.py

@@ -93,8 +93,8 @@ def set_initial_conditions(self, variables):
 
         self.initial_conditions = {
             phi_s_cn: pybamm.Scalar(0),
-            phi_s_cp: param.U_p(param.c_p_init, param.T_ref)
-            - param.U_n(param.c_n_init, param.T_ref),
+            phi_s_cp: param.U_p(param.c_p_init, param.T_init)
+            - param.U_n(param.c_n_init, param.T_init),
             i_boundary_cc: applied_current / cc_area,
         }
 

pybamm/models/submodels/electrode/ohm/full_ohm.py

@@ -90,13 +90,13 @@ def set_boundary_conditions(self, variables):
     def set_initial_conditions(self, variables):
 
         phi_s = variables[self.domain + " electrode potential"]
-        T_ref = self.param.T_ref
+        T_init = self.param.T_init
 
         if self.domain == "Negative":
             phi_s_init = pybamm.Scalar(0)
         elif self.domain == "Positive":
-            phi_s_init = self.param.U_p(self.param.c_p_init, T_ref) - self.param.U_n(
-                self.param.c_n_init, T_ref
+            phi_s_init = self.param.U_p(self.param.c_p_init, T_init) - self.param.U_n(
+                self.param.c_n_init, T_init
             )
 
         self.initial_conditions[phi_s] = phi_s_init

pybamm/models/submodels/electrolyte/base_electrolyte_diffusion.py

@@ -93,7 +93,7 @@ def _get_standard_flux_variables(self, N_e):
         """
 
         param = self.param
-        D_e_typ = param.D_e(param.c_e_typ, param.T_ref)
+        D_e_typ = param.D_e(param.c_e_typ, param.T_init)
         flux_scale = D_e_typ * param.c_e_typ / param.L_x
 
         variables = {

pybamm/models/submodels/electrolyte/stefan_maxwell/conductivity/full_stefan_maxwell_conductivity.py

@@ -63,5 +63,5 @@ def set_algebraic(self, variables):
 
     def set_initial_conditions(self, variables):
         phi_e = variables["Electrolyte potential"]
-        T_ref = self.param.T_ref
-        self.initial_conditions = {phi_e: -self.param.U_n(self.param.c_n_init, T_ref)}
+        T_init = self.param.T_init
+        self.initial_conditions = {phi_e: -self.param.U_n(self.param.c_n_init, T_init)}

pybamm/models/submodels/electrolyte/stefan_maxwell/conductivity/surface_potential_form/full_surface_form_stefan_maxwell_conductivity.py

@@ -45,9 +45,9 @@ def set_initial_conditions(self, variables):
 
         delta_phi_e = variables[self.domain + " electrode surface potential difference"]
         if self.domain == "Negative":
-            delta_phi_e_init = self.param.U_n(self.param.c_n_init, self.param.T_ref)
+            delta_phi_e_init = self.param.U_n(self.param.c_n_init, self.param.T_init)
         elif self.domain == "Positive":
-            delta_phi_e_init = self.param.U_p(self.param.c_p_init, self.param.T_ref)
+            delta_phi_e_init = self.param.U_p(self.param.c_p_init, self.param.T_init)
 
         self.initial_conditions = {delta_phi_e: delta_phi_e_init}
 

pybamm/models/submodels/electrolyte/stefan_maxwell/conductivity/surface_potential_form/leading_surface_form_stefan_maxwell_conductivity.py

@@ -49,9 +49,9 @@ def set_initial_conditions(self, variables):
             + " electrode surface potential difference"
         ]
         if self.domain == "Negative":
-            delta_phi_init = self.param.U_n(self.param.c_n_init, self.param.T_ref)
+            delta_phi_init = self.param.U_n(self.param.c_n_init, self.param.T_init)
         elif self.domain == "Positive":
-            delta_phi_init = self.param.U_p(self.param.c_p_init, self.param.T_ref)
+            delta_phi_init = self.param.U_p(self.param.c_p_init, self.param.T_init)
 
         self.initial_conditions = {delta_phi: delta_phi_init}
 

pybamm/models/submodels/interface/lead_acid.py

@@ -78,9 +78,9 @@ def _get_open_circuit_potential(self, variables):
             c_e = c_e.orphans[0]
 
         if self.domain == "Negative":
-            ocp = self.param.U_n(c_e, self.param.T_ref)
+            ocp = self.param.U_n(c_e, self.param.T_init)
         elif self.domain == "Positive":
-            ocp = self.param.U_p(c_e, self.param.T_ref)
+            ocp = self.param.U_p(c_e, self.param.T_init)
 
         dUdT = pybamm.Scalar(0)
 

pybamm/parameters/standard_parameters_lead_acid.py

@@ -422,7 +422,8 @@ def U_p_dimensional(c_e, T):
 c_n_init = c_e_init
 c_p_init = c_e_init
 
-# Thermal effects not implemented for lead-acid, but parameter needed for consistency
+# Thermal effects not implemented for lead-acid, but parameters needed for consistency
+T_init = pybamm.Scalar(0)
 Theta = pybamm.Scalar(0)  # ratio of typical temperature change to ambient temperature