NEW MODULES AND FEATURES
-
LisbOn KInetics Boltzmann (LoKI-B) simulation tool
- PLASIMO now offers built-in support for LoKI-B. The Global Model and the Drift-Diffusion model can use electron energy distribution functions self-consistently calculated by LoKI-B.
-
Drift-Diffusion-Inertia Model
- Add a new module for modeling of dusty plasmas. The dust is modeled as a fluid. The model calculates the dust density distribution and charging of the dust. The forces acting on the dust are the electric force, drag forces, thermophoretic force, and gravity.
- Add the option to self-consistently couple the drift-diffusion with the particle tracker model, allowing any type of particle to be traced in the plasma.
- Add the option to apply constant current via a PID controller. The voltage at the electrode is tuned using a PID controller to obtain the requested current.
- Extend the wall process of type Thermionic emission with the option to specify a function for the work function. The wall temperature can be calculated or user-specified. In addition, a material-specific factor is added to the Richardson constant.
- Allow temperature calculations on regions that are larger than the plasma region, also containing materials such as dielectrics and metals.
-
Hybrid model
- Add support for adding an external electron injection source Type[PointSource] with continuous injection with a user-specified Rate.
- Add initial energy distribution section with support for Maxwell, MaxwellTail and Monochromatic EDFs.
- Add the option to specify the initial velocity components and/or the temperature of the particles to be injected. If both are given, the specified initial velocity will receive a random component superimposed on it.
- Add option to determine and visualize the global averaged EDF for all particles in the simulation.
-
Particle Tracker Model
- Add the following forces acting on a collection of test particles: neutral and ion drag forces, interparticle force, and gravity.
- Support specifying particles either based on stochiometry (chemical formula) or on a specified Mass, Charge and Radius.
Global Model
- Improve the coupling strategy between the Global Model and the particle growth model and the surface chemistry model. The computational performance is drastically improved.
- Improve the quasi-neutrality constraint, resulting in more stable quasi-neutral models, especially in the presence of negative ions.
- Add support for using a logarithm based ode system.
-
LTE Model
- Add support for unstructured meshes.
- Improve flexibility of initialization of the mass fractions.
- Add option to specify molar fractions.
INPUT FILE CHANGES
- Global Model:
- Sections WallProcess[SurfaceChemistry] and ParticleGrowth do not require a Stepper section anymore.
- Particle Growth Model:
- Move section ParticleGrowth/Stepper to Model[ParticleGrowthModel]/Stepper.
- Surface Chemistry Model:
- Move section WallProcess[SurfaceChemistry]/Stepper to Model[SurfaceChemistry]/Stepper.
Bug Fixes
- Global Model: correctly use internal contributions in enthalpy when Flow is enabled. This may affect the gas temperature calculation when the species state definition is not of to Type Atom.
- The collision integral defaults that rely on the generalized Lennard Jones potential are clipped at 50 kK. The fits are not valid above this temperature. This affects neutral-neutral and neutral-ion collisions and should therefore not influence the results significantly.
- Allow usage of states using Type NASA9 in a wider temperature range. When extrapolation is needed the value for the thermodynamic properties is then based on the highest or lowest value in the specification.
For any additional information, please send an email to info@plasma-matters.nl.