Numerical simulation on non-equilibrium plasma flow in an annular hall MHD device

Hidemasa Takana, Y. Eda, Y. Okuno

Research output: Contribution to conferencePaper

Abstract

The characteristics of the annular Hall MHD device under the wide range of the operating conditions and physical phenomena in the device with the electrical energy extraction and addition are investigated in detail by carrying out time-dependent three-dimensional numerical simulations. This device has a cylindrical shape and has such an interesting feature from the engineering point of view as that this device can work both as the generator and the accelerator. The results show that under the high power (loading) operation, the discharge becomes steady,ho wever,under the low power (loading) operation,the lack of Joule heating induces the unsteady discharge. This unsteady discharge has a clockwise spiral structure,and rotates clockwise at the frequency of ~ 30[kHz]. Under the condition of adding electrical energy into the plasma,it was found that effective acceleration cannot be obtained if two modes of the plasma ('generation plasma' and'acceleration plasma') co-exists in the device.

Original languageEnglish
Publication statusPublished - 2002 Jan 1
Externally publishedYes
Event33rd Plasmadynamics and Lasers Conference 2002 - Maui, HI, United States
Duration: 2002 May 202002 May 23

Other

Other33rd Plasmadynamics and Lasers Conference 2002
CountryUnited States
CityMaui, HI
Period02/5/2002/5/23

Keywords

  • Annular hall MHD device
  • Energy conversion
  • Energy extraction
  • Energy input
  • MHD accelerator
  • Non-equilibrium MHD generation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics

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  • Cite this

    Takana, H., Eda, Y., & Okuno, Y. (2002). Numerical simulation on non-equilibrium plasma flow in an annular hall MHD device. Paper presented at 33rd Plasmadynamics and Lasers Conference 2002, Maui, HI, United States.