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doc/user-manual/fpakc_UserManual.tex
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@ -502,79 +502,82 @@ make
\end{itemize}
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\subsection{boundary}
The array object \textbf{boundary} determines the interaction between surfaces and particles.
These boundaries need to be linked to a specific edge in the mesh.
The accepted variables are:
\subsection{boundaries}
The object \textbf{boundaries} has two main arrays that define the particle boundaries and the ones that must be applied to the electromagnetic field.
\begin{itemize}
\item \textbf{name}: Character.
Name of the boundary.
\item \textbf{physicalSurface}: Integer.
Identification of the surface in the mesh file.
\item \textbf{bType}: Array of objects of dimension 'number of species'.
Per each species defined in the case, a boundary \textbf{type} needs to be provided.
Accepted values for \textbf{type} are:
\begin{itemize}
\item \textbf{reflection}: Elastic reflection of particles.
\item \textbf{absorption}: Particle is eliminated from the domain.
The particle is first moved into the edge and its properties are scattered among the edge nodes.
\item \textbf{transparent}: Particle abandon the numerical domain.
\item \textbf{wallTemperature}: Reflective wall with constant temperature that exchange heat with particles.
Required parameters are:
\begin{itemize}
\item \textbf{temperature}: Real.
Units of $\unit{K}$.
Temperature wall.
\item \textbf{specificHeat}: Real.
Units of $\unit{J kg^{-1} K^{-1}}$.
Specific heat capacity of the material.
\end{itemize}
\item \textbf{ionization}: Per each particle crossing the surface with this type of boundary, a number of ionization events are calculated.
A pair of ion-electron is generated for each ionization event, taking as a reference a neutral background.
The secondary electron is taken as the same type as the incident particle.
The available input is:
\begin{itemize}
\item \textbf{neutral}: Object.
Information about the neutral background.
Required parameters are:
\begin{itemize}
\item \textbf{ion}: Character.
Species name of the ion generated as defined in object \textbf{species}.
Required parameter.
\item \textbf{mass}: Real.
Units in $\unit{kg}$.
Mass of neutral species.
If missing, the mass of the ion is used
\item \textbf{density}: Real.
Units in $\unit{m^{-3}}$.
Density of neutral background.
Required parameter.
\item \textbf{velocity}: Real.
Units in $\unit{m s^{-1}}$.
Array of dimension $3$.
Mean velocity of neutral background.
Required parameter.
\item \textbf{temperature}: Real.
Units in $\unit{K}$.
Temperature of neutral background.
Required parameter.
\end{itemize}
\item \textbf{effectiveTime}: Real.
Units in $\unit{s}$.
As the particle is no longer simulated once it crossed the boundary, this time represents the effective time in which the particle produces ionization processes in the neutral background.
Required parameter.
\item \textbf{energyThreashold}: Real.
Units in $\unit{eV}$.
Ionization energy threshold for the simulated process.
Required parameter.
\item \textbf{crossSection}: Character.
Complete path to the cross-section data for the ionization process.
\end{itemize}
\item \textbf{axis}: Identifies the symmetry axis for 2D cylindrical simulations.
If , for some reason, a particle interacts with this axis, it is reflected.
\end{itemize}
\item \textbf{particles}. Array of objects.
Different models for interaction between particles and edges.
\begin{itemize}
\item \textbf{name}: Character.
Name of the boundary.
\item \textbf{physicalSurface}: Integer.
Identification of the surface in the mesh file.
\item \textbf{bType}: Array of objects of dimension 'number of species'.
Per each species defined in the case, a boundary \textbf{type} needs to be provided.
Accepted values for \textbf{type} are:
\begin{itemize}
\item \textbf{reflection}: Elastic reflection of particles.
\item \textbf{absorption}: Particle is eliminated from the domain.
The particle is first moved into the edge and its properties are scattered among the edge nodes.
\item \textbf{transparent}: Particle abandon the numerical domain.
\item \textbf{wallTemperature}: Reflective wall with constant temperature that exchange heat with particles.
Required parameters are:
\begin{itemize}
\item \textbf{temperature}: Real.
Units of $\unit{K}$.
Temperature wall.
\item \textbf{specificHeat}: Real.
Units of $\unit{J kg^{-1} K^{-1}}$.
Specific heat capacity of the material.
\end{itemize}
\item \textbf{ionization}: Per each particle crossing the surface with this type of boundary, a number of ionization events are calculated.
A pair of ion-electron is generated for each ionization event, taking as a reference a neutral background.
The secondary electron is taken as the same type as the incident particle.
The available input is:
\begin{itemize}
\item \textbf{neutral}: Object.
Information about the neutral background.
Required parameters are:
\begin{itemize}
\item \textbf{ion}: Character.
Species name of the ion generated as defined in object \textbf{species}.
Required parameter.
\item \textbf{mass}: Real.
Units in $\unit{kg}$.
Mass of neutral species.
If missing, the mass of the ion is used
\item \textbf{density}: Real.
Units in $\unit{m^{-3}}$.
Density of neutral background.
Required parameter.
\item \textbf{velocity}: Real.
Units in $\unit{m s^{-1}}$.
Array of dimension $3$.
Mean velocity of neutral background.
Required parameter.
\item \textbf{temperature}: Real.
Units in $\unit{K}$.
Temperature of neutral background.
Required parameter.
\end{itemize}
\item \textbf{effectiveTime}: Real.
Units in $\unit{s}$.
As the particle is no longer simulated once it crossed the boundary, this time represents the effective time in which the particle produces ionization processes in the neutral background.
Required parameter.
\item \textbf{energyThreashold}: Real.
Units in $\unit{eV}$.
Ionization energy threshold for the simulated process.
Required parameter.
\item \textbf{crossSection}: Character.
Complete path to the cross-section data for the ionization process.
\end{itemize}
\item \textbf{axis}: Identifies the symmetry axis for 2D cylindrical simulations.
If , for some reason, a particle interacts with this axis, it is reflected.
\end{itemize}
\end{itemize}
\item \textbf{EM}
\end{itemize}
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