Implicit multi-fluid simulation of interpenetrating plasmas
A one dimensional simulation code for interpenetrating multi-component plasmas is presented. Separate fluid equations for multiple species and the Poisson equation for the electric field are solved implicitly to allow stable accurate solutions over a wide range of the time scale parameters {omega}{sub p}{Delta}t and {nu}{sub c}{Delta}t ({omega}{sup p} is the plasma frequency, {nu}{sub c} a typical collision frequency and {Delta}t the time step). In regions where {omega}{sub p}{Delta}t<<1 and {nu}{sub c}{Delta}t<<1, electron dynamics and space-charge effects are resolved, while in regions where {omega}{sub p}{Delta}t >>1 and/or {nu}{sub c}{Delta}t>>1, the ambipolar and/or diffusion models are recovered. In regions of low collisionality, particles may be created and deleted which are followed using particle and cell techniques combined with scatter and drag due to collisions with the fluids. Applications of this code to interpenetrating laser generated plasmas are presented.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 10158990
- Report Number(s):
- UCRL-JC--112302; CONF-9211128--8; ON: DE93013351
- Country of Publication:
- United States
- Language:
- English
Similar Records
Time-implicit simulation of particle-fluid systems
Implicit moment particle simulation of plasmas