Experimental Observation and Theoretic Analysis MHD Effects of a Liquid Metal Jet in a Gradient Magnetic Field

Zengyu, Xu; Chanjie, Pan; Weishan, Kang

Title: Experimental Observation and Theoretic Analysis MHD Effects of a Liquid Metal Jet in a Gradient Magnetic Field

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Abstract

The advanced limiter-divertor plasma-facing system (ALPS) has been studied for several years, but the magnetohydrodynamic (MHD) stability of free surface jet flow in a gradient transverse magnetic field is one of the key remaining issues. Recently, some experiments on jet flow were performed with a 0.2- to 1.95-T gradient magnetic field and 2.9, 3.24, and 4.10 m/s velocities for a flow diameter of 6 mm. The results indicated that the transverse gradient magnetic field strongly shortens the jet flow range and the shape of the cross section of the jet flow deforms from round to elliptical and finally becomes a bowed-down shape in the jet flow downstream under these experimental conditions. This paper includes simple modeling of jet flow MHD stability in a gradient transverse magnetic field, which derives the velocity and the area of the cross section of the jet flow along the flow path. The theoretical expected values are in good agreement with experimental results.

Authors:

Zengyu, Xu; Chanjie, Pan; Weishan, Kang ^[1]

Southwestern Institute of Physics (China)

Publication Date:: Wed Dec 15 00:00:00 EST 2004

OSTI Identifier:: 20849772

Resource Type:: Journal Article

Journal Name:: Fusion Science and Technology

Additional Journal Information:: Journal Volume: 46; Journal Issue: 4; Other Information: Copyright (c) 2006 American Nuclear Society (ANS), United States, All rights reserved. http://epubs.ans.org/; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1536-1055

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COMPUTERIZED SIMULATION; DIVERTORS; FIRST WALL; JETS; LIMITERS; LIQUID METALS; MAGNETIC FIELDS; MAGNETOHYDRODYNAMICS; PLASMA SIMULATION; STABILITY; VELOCITY

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                    Zengyu, Xu, Chanjie, Pan, and Weishan, Kang. Experimental Observation and Theoretic Analysis MHD Effects of a Liquid Metal Jet in a Gradient Magnetic Field.  United States: N. p., 2004. 
        Web.

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                    Zengyu, Xu, Chanjie, Pan, & Weishan, Kang. Experimental Observation and Theoretic Analysis MHD Effects of a Liquid Metal Jet in a Gradient Magnetic Field.  United States.

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                    Zengyu, Xu, Chanjie, Pan, and Weishan, Kang. 2004.  
        "Experimental Observation and Theoretic Analysis MHD Effects of a Liquid Metal Jet in a Gradient Magnetic Field".  United States.

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@article{osti_20849772,

  title        = {Experimental Observation and Theoretic Analysis MHD Effects of a Liquid Metal Jet in a Gradient Magnetic Field},

  author       = {Zengyu, Xu and Chanjie, Pan and Weishan, Kang},

  abstractNote = {The advanced limiter-divertor plasma-facing system (ALPS) has been studied for several years, but the magnetohydrodynamic (MHD) stability of free surface jet flow in a gradient transverse magnetic field is one of the key remaining issues. Recently, some experiments on jet flow were performed with a 0.2- to 1.95-T gradient magnetic field and 2.9, 3.24, and 4.10 m/s velocities for a flow diameter of 6 mm. The results indicated that the transverse gradient magnetic field strongly shortens the jet flow range and the shape of the cross section of the jet flow deforms from round to elliptical and finally becomes a bowed-down shape in the jet flow downstream under these experimental conditions. This paper includes simple modeling of jet flow MHD stability in a gradient transverse magnetic field, which derives the velocity and the area of the cross section of the jet flow along the flow path. The theoretical expected values are in good agreement with experimental results.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/20849772},
  journal      = {Fusion Science and Technology},

  issn         = {1536-1055},

  number       = 4,

  volume       = 46,

  place        = {United States},

  year         = {Wed Dec 15 00:00:00 EST 2004},

  month        = {Wed Dec 15 00:00:00 EST 2004}

}

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