| 43 | | ||[=#PA0018 PA0018] ||ros_count > 5 in Rosenbrock method || The Rosenbrock method is used if curvature and solution effects are included in the calculation of cloud droplet growth due to condensation (see [../inipar#curvature_solution_effects curvature_solution effects]). This algorithm may lead to unreasonable results, if the external conditions, especially the supersaturation, significantly changes between two PALM time steps. In that case, the algorithm will be carried out again with a smaller internal time step. The limits, which decide weather a result is reasonable or not, are only tested for a certain range of relative humidities and cloud droplet sizes. If this error appears, the result after 5 recalculations of the Rosenbrock algorithm is still regarded as unreasonable. Thus the limiting values may not be suitable for the current conditions and need to be adjusted in PALM's source code (see file [source:palm/trunk/SOURCE/lpm_droplet_condensation.f90 lpm_doplet_condensation.f90] in the repository). || |
| | 43 | ||[=#PA0018 PA0018] ||ros_count > 5 in Rosenbrock method || The Rosenbrock method is used if curvature and solution effects are included in the calculation of cloud droplet growth due to condensation (see [../parpar#curvature_solution_effects curvature_solution_effects]). This algorithm may lead to unreasonable results, if the external conditions, especially the supersaturation, significantly changes between two PALM time steps. In that case, the algorithm will be carried out again with a smaller internal time step. The limits, which decide weather a result is reasonable or not, are only tested for a certain range of relative humidities and cloud droplet sizes. If this error appears, the result after 5 recalculations of the Rosenbrock algorithm is still regarded as unreasonable. Thus the limiting values may not be suitable for the current conditions and need to be adjusted in PALM's source code (see file [source:palm/trunk/SOURCE/lpm_droplet_condensation.f90 lpm_doplet_condensation.f90] in the repository). || |
