New in version PLASIMO-8.1 (compared to 8.0):

NEW FEATURES

  • Enormous performance improvements can be achieved (from 30 to 150%, depending on the problem) by improved settings for iterative solvers. PLASIMO now allows an optional section [Preconditioner] with additional settings.
  • PLASIMO's default viewers for 2D and 3D plots are now VTK-based.
  • Flow and FlowTemperature modules now have support for unstructured meshes.
  • Two new solvers have been added: GMRES and SimplicialLDLT.
  • The Help window is now initially embedded in the main window.
  • The GUI model editor supports now the option to switch to text mode editor.
  • The steppers DVODE and LSODE support now periodic critical times to be specified.
  • For Local Thermodynamic Equilibrium (LTE) models, the formation enthalpy is now included in the LTE enthalpy and internal energy calculations. This affects temporal models and models that include flow.
  • Drift-Diffusion models:
    • when the gas flow is calculated in the drift-diffusion model, optionally the electric force acting on the fluid can be taken into account.
    • In hybrid models, the initial electrons can now be initialized with a Maxwellian distribution or with a given ConstantEnergy.
  • Flow model:
    • An option has been added that allows the user to take into account an external force acting on the fluid. The force can be specified as a function of space or initialized from file.
    • The force exerted on a boundary can now be requested as additional output using section [CalculateForcesOnBodies] for unstructured meshes.
    • The initial mass density and viscosity can now be specified as a function of space or initialized from file.
  • Global model:
    • Electron and gas temperature sources can now optionally be written to files. These and other output data can be requested in section Output.
    • The output file sources.dat contains now only the particle sources.
    • Added symbol NeutralDensity() in the Global model, so this quantity can be used in expressions.
    • The output file temperatures.dat is replaced by separate files for every temperature that is calculated in the model. Also the energy densities are printed to files.
  • Surface chemistry model:
    • Support for series of simulations with variable parameters has been added.

INPUT FILE CHANGES

  • Velocity sections no longer accept an IterConfig section. The Flow section must contain such section, which will be used for all velocities.
  • Global Model:
    • In section [Stepper] the optional section [CriticalPoints] was renamed to [CriticalTimes].
    • In Section [Stepper][CriticalTimes], the leaf Point has been renamed to CriticalTime.
  • Drift-Diffusion model:
    • In section [PlasmaRegion], the leaf InitTe has been renamed to InitialElectronEnergy.

Bug Fixes

  • Corrected the mouse over tooltip in scrolling CellMatrix and CellVector viewers.
  • Elastic or Effective cross sections are not accepted in EDFOnly section and now give a proper error message.
  • In wxMathplot x-y viewers, relative axis values are now correctly formatted for logarithmic axes.
  • SolverTolerance is no longer an input leaf for the direct MaxtrixSolver of type SuperLUSolver.
  • For steppers DVODE, LSODE and LSODA the user-defined initial time step is now respected.

For the complete list of changes and fixes, please refer to the NEWS file in the PLASIMO package.

For any additional information, please send an email to info@plasma-matters.nl.