[ProcessLib/TM] Removed the global vector of _previous_T and its associated function

ProcessLib/ThermoMechanics/ThermoMechanicsProcess.cpp

@@ -353,8 +353,6 @@ void ThermoMechanicsProcess<DisplacementDim>::
             dof_tables.emplace_back(
                 *_local_to_global_index_map_single_component);
         }
-
-        setCoupledSolutionsOfPreviousTimeStep();
     }
 
     ProcessLib::ProcessVariable const& pv = getProcessVariables(process_id)[0];
@@ -410,21 +408,6 @@ void ThermoMechanicsProcess<DisplacementDim>::preTimestepConcreteProcess(
             *x[process_id], t, dt);
         return;
     }
-
-    // For the staggered scheme.
-    if (!_previous_T)
-    {
-        _previous_T = MathLib::MatrixVectorTraits<GlobalVector>::newInstance(
-            *x[process_id]);
-    }
-    else
-    {
-        auto& x0 = *_previous_T;
-        MathLib::LinAlg::copy(*x[process_id], x0);
-    }
-
-    auto& x0 = *_previous_T;
-    MathLib::LinAlg::setLocalAccessibleVector(x0);
 }
 
 template <int DisplacementDim>
@@ -447,14 +430,6 @@ void ThermoMechanicsProcess<DisplacementDim>::postTimestepConcreteProcess(
         t, dt);
 }
 
-template <int DisplacementDim>
-void ThermoMechanicsProcess<
-    DisplacementDim>::setCoupledSolutionsOfPreviousTimeStep()
-{
-    _coupled_solutions->coupled_xs_t0.resize(1);
-    _coupled_solutions->coupled_xs_t0[0] = _previous_T.get();
-}
-
 template <int DisplacementDim>
 NumLib::LocalToGlobalIndexMap const&
 ThermoMechanicsProcess<DisplacementDim>::getDOFTable(const int process_id) const

ProcessLib/ThermoMechanics/ThermoMechanicsProcess.h

@@ -104,13 +104,6 @@ private:
 
     MeshLib::PropertyVector<double>* _nodal_forces = nullptr;
     MeshLib::PropertyVector<double>* _heat_flux = nullptr;
-
-    /// Temperature of the previous time step for staggered scheme.
-    std::unique_ptr<GlobalVector> _previous_T;
-
-    /// Set the increment solutions of the present time step to the coupled
-    /// term.
-    void setCoupledSolutionsOfPreviousTimeStep();
 };
 
 extern template class ThermoMechanicsProcess<2>;