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IPM
30
YEARS OLD

“School of Physics”

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Paper   IPM / P / 7196
School of Physics
  Title:   A Computational Fluid Model for Investigation of Plasma Waves and Instabilities
  Author(s): 
1 . H. Hakimi Pajouh
2 . M.R. Rouhani
3 . H. Abbasi
4 . F. Kazeminejad
  Status:   Preprint
  Journal:
  Year:  2001
  Supported by:  IPM
  Abstract:
A computational fluid model is developed to study waves and instabilities. A new technique involving initial perturbations in configuration space have been implemented to excite the plasma waves; i.e. the perturbations acting similar to a random velocity distribution in particle in cell (PIC) codes. This forms a new powerful tool for investigation of many waves arising in both thermal and cold plasmas and as such will allow investigation of problems demanding scales and resolution not yet possible by PIC codes. The model predicts Langmuir waves, two stream instabilities, nonlinear wave-wave interaction, and the Debye screening effects. The agreement between theory and simulation where analytic results are available are excellent.

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