Time-implicit simulation of particle-fluid systems
This paper presents one-dimensional particle-fluid hybrid simulations in which the strongly collisional components of the plasma (e.g., ions and thermal electrons with nu/sub cf/..delta..t > 1) are treated as fluids and the weakly collisional components (e.g., energetic electrons with nu/sub cp/..delta..t << 1) are treated as particles. Here nu/sub cf/ denotes the fluid ion and electron collision frequencies, nu/sub cp/ is the energetic particle collision frequency and ..delta..t is the time step. Collisions between particle and fluid components are treated by a Monte-Carlo method and mass transfers between the particle and fluid electron components are governed by collision frequency thresholds. The field is computed implicitly to allow time steps with ..omega../sub p/ ..delta..t > 1 (..omega../sub p/: plasma frequency).
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5466871
- Report Number(s):
- UCRL-91642; CONF-850266-6; ON: DE85012944
- Country of Publication:
- United States
- Language:
- English
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