spis.Top.Plasma
Class Plasma
java.lang.Object
spis.Top.Plasma.Plasma
- Direct Known Subclasses:
- MeshedPlasma
- public abstract class Plasma
- extends java.lang.Object
Class Name : Plasma (generic Plasma class)
Project ref : SPIS project
File name : Plasma.java
File type : class
Copyright : ONERA, 2 Av. E. Belin, 31055 Toulouse cedex, France
http://www.onecert.fr
Status : under development
Creation : 25/08/2003
Modification :
Description : general abstract Plasma class.
Stores plasma data and provides solvers.
All Plasma classes must be derived from this class.
Data describing the plasma state, and methods computing its dynamics.
Basically calls the solvers for field and matter dynamics in succession (or simultaneously for MHD)
Versions and anomalies correction :
Version number | Author (name, e-mail) | Corrections/Modifications |
0.1 | JF Roussel, roussel@onecert.fr | Creation |
- Version:
- 0.1
- Author:
- JF Roussel
Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Plasma
public Plasma()
integrate
public SurfDistrib[] integrate(float dt,
ScalSurfField scPot,
ScalSurfField totCur)
- Integrates the plasma dynamics over the (small) time dt, with potentials
scPot on the spacecraft.
Simplified version, which only integrates the net current (a scalar field)
while the full version returns all fluxes (full surface distribution functions).
- Parameters:
dt
- integration timescPot
- spacecraft potential (input)
- Returns:
- individual currents on SC (one per population)
- See Also:
integrate(float, ScalSurfField, SurfDistrib[])
,
Plasma#computeNetCurrent(SurfDistrib[], ScalSurfField)
integrate
public abstract SurfDistrib[] integrate(float dt,
ScalSurfField scPot,
SurfDistrib[] inFlux)
- Integrates the plasma dynamics over the (small) time dt.
The results of this time evolution are:
- the update of the plasma state (internal variables, accessible through the next methods)
- the fluxes (SurfDistrib) on the surface meshes, the ones on the spacecraft
being returned by this function (the ones onto external plasma boundaries
are not currently used but exist internally and can be used for domain
splitting i nthe future)
Inputs are the integration time dt, spacecraft potential,
and the incoming plasma fluxes:
- sources (thurster, ion beam...)
- result of interactions (secondary particle...)
In principle the plasma flux itself is not one of these SurfDistrib/fluxes,
it is stored internally, but it could be one of them.
The difference between these incoming fluxes and the ones stored internally
to this class (plasma fluxes at external boundaries) is that these incoming
fluxes can be modified at each iteration (as a result of secondary particle
production, thruster on/off switch...).
- Parameters:
dt
- integration durationscPot
- spacecraft potentialinFlux
- incoming plasma fluxes (sources, secondary particles...
- Returns:
- the matter fluxes from the plasma
- See Also:
Plasma#integrate(float, ScalSurfField)
assessLargestDt
public abstract float assessLargestDt()
- Returns:
- the largest acceptable time step dt for plasma integration