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Title: Comparison of Zakharov simulation and open boundary Vlasov simulation of strong Langmuir turbulence

Abstract

Both Zakharov equations and Vlasov equations are solved numerically to study the strong Langmuir turbulence developed in a plasma driven by an external pump field oscillating at the plasma frequency. A steady state turbulence in Vlasov simulations is reached by using open boundary conditions under which hot particles generated by strong caviton fields are replaced by initial cold Maxwellian particles when they cross the boundaries of simulation domain. A similar steady turbulent state in Zakharov simulations is easily achieved by implementing a phenomenological damping model and using periodic boundary conditions. Simulation results of these two different models are compared and investigated. {copyright} {ital 1996 American Institute of Physics.}

Authors:
 [1];  [2]; ;  [3]
  1. Department of Astrophysical, Planetary, and Atmospheric Sciences, University of Colorado, Boulder, Colorado 80309 (United States)
  2. Department of Physics and Astronomy, The University of Iowa, Iowa City, Iowa 52242 (United States)
  3. Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
Publication Date:
OSTI Identifier:
253467
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 3; Journal Issue: 1; Other Information: PBD: Jan 1996
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION; TURBULENCE; PLASMA SIMULATION; BOLTZMANN-VLASOV EQUATION; NUMERICAL SOLUTION; KINETIC EQUATIONS; WAVE EQUATIONS

Citation Formats

Wang, J G, Payne, G L, DuBois, D F, and Rose, H A. Comparison of Zakharov simulation and open boundary Vlasov simulation of strong Langmuir turbulence. United States: N. p., 1996. Web. doi:10.1063/1.871837.
Wang, J G, Payne, G L, DuBois, D F, & Rose, H A. Comparison of Zakharov simulation and open boundary Vlasov simulation of strong Langmuir turbulence. United States. doi:10.1063/1.871837.
Wang, J G, Payne, G L, DuBois, D F, and Rose, H A. Mon . "Comparison of Zakharov simulation and open boundary Vlasov simulation of strong Langmuir turbulence". United States. doi:10.1063/1.871837.
@article{osti_253467,
title = {Comparison of Zakharov simulation and open boundary Vlasov simulation of strong Langmuir turbulence},
author = {Wang, J G and Payne, G L and DuBois, D F and Rose, H A},
abstractNote = {Both Zakharov equations and Vlasov equations are solved numerically to study the strong Langmuir turbulence developed in a plasma driven by an external pump field oscillating at the plasma frequency. A steady state turbulence in Vlasov simulations is reached by using open boundary conditions under which hot particles generated by strong caviton fields are replaced by initial cold Maxwellian particles when they cross the boundaries of simulation domain. A similar steady turbulent state in Zakharov simulations is easily achieved by implementing a phenomenological damping model and using periodic boundary conditions. Simulation results of these two different models are compared and investigated. {copyright} {ital 1996 American Institute of Physics.}},
doi = {10.1063/1.871837},
journal = {Physics of Plasmas},
number = 1,
volume = 3,
place = {United States},
year = {1996},
month = {1}
}