POP Nameplate
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter UniPHY Group iResearch App Facebook

Physics of Plasmas / Volume 5 / Issue 8 / ARTICLES

Phys. Plasmas 5, 2912 (1998); http://dx.doi.org/10.1063/1.873013 (9 pages)

A computational investigation of divertor plasma scaling laws

D. A. Knoll1, Peter J. Catto2, and S. I. Krasheninnikov2

1Applied Theoretical and Computational Physics Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
2MIT Plasma Science and Fusion Center, Cambridge, Massachusetts 02139

(Received 9 February 1998; accepted 10 March 1998)

Usually, tokamak core scaling laws are written in terms of dimensionless geometrical quantities and parameters corresponding to Coulomb collisionality, gyro-motion, and plasma beta. However, Lackner [K. Lackner, Comments Plasma Phys. Controlled Fusion 15, 359 (1994)] observed that the temperature profiles also must be the same to obtain the same atomic physics in the divertor region of similar discharges. He obtained a scaling indicating that none of the present tokamaks could be made similar to the International Thermonuclear Experimental Reactor (ITER) [G. Janeschitz et al., J. Nucl. Mater. 220–222, 73 (1995)], but implicitly retained only two body interactions. Subsequent work [P. J. Catto et al., Phys. Plasmas 3, 3191 (1996)] demonstrated that non-two-body effects (multistep radiation, excitation, and ionization processes as well as three body recombination) cannot be ignored for plasma densities above 1019 m−3; the regime in which the ITER divertor must operate. In this reactor relevant regime, scaling law information must be obtained experimentally and by complex numerical simulations. To retain and quantify non-two-body effects on scaling laws we employ numerical simulations from a two dimensional box geometry version of the UEDGE code [D. A. Knoll et al., Phys. Plasmas 3, 293 (1996)] which includes a coupled plasma and neutral fluid description retaining non-two-body effects. Results are presented from a numerical investigation into the upstream parallel heat flux divided by upstream pressure scaling, as well as collisionality scaling, of the tokamak divertor target heat flux and ion saturation current. © 1998 American Institute of Physics.

© 1998 American Institute of Physics

RELATED DATABASES

To view database links for this article, you need to log in.

KEYWORDS and PACS

Keywords

plasma toroidal confinement, plasma-wall interactions, fusion reactor design, nuclear engineering computing, TOKAMAK DEVICES, DIVERTORS, PLASMA SIMULATION, SCALING LAWS, HEAT FLUX, IONIZATION, PLASMA CONFINEMENT, THERMONUCLEAR REACTOR WALLS, DESIGN

PACS

  • 28.52.Av

    Theory, design, and computerized simulation

  • 52.40.Hf

    Plasma-material interactions; boundary layer effects

  • 52.55.Fa

    Tokamaks, spherical tokamaks

  • 52.55.Pi

    Fusion products effects (e.g., alpha-particles, etc.), fast particle effects

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.873013

PUBLICATION DATA

ISSN

1070-664X (print)  
1089-7674 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    P. J. Catto, D. A. Knoll, and S. I. Krasheninnikov, Phys. Plasmas 3, 3191 (1996)PHPAEN000003000008003191000001.

    P. J. Catto, S. I. Krasheninnikov, and J. W. Connor, Phys. Plasmas 3, 927 (1996)PHPAEN000003000003000927000001.

    B. B. Kadomtsev, Sov. J. Plasma Phys. 1, 295 (1975).

    S. I. Krasheninnikov, P. J. Catto, P. Helander, and D. J. Sigmar, Phys. Plasmas 2, 2717 (1995)PHPAEN000002000007002717000001.

    D. A. Knoll, P. R. McHugh, S. I. Krasheninnikov, and D. J. Sigmar, Phys. Plasmas 3, 293 (1996)PHPAEN000003000001000293000001.

    D. A. Knoll, S. I. Krasheninnikov, P. R. McHugh, and D. J. Sigmar, Phys. Plasmas 3, 3358 (1996)PHPAEN000003000009003358000001.



Close

Google Calendar

ADVERTISEMENT

Your Recent History Recent History Help

Recently Viewed

  1. A computational investigation of divertor plasma scaling laws
  2. Tungsten wire-array Z-pinch experiments at 200 TW and 2 MJ
  3. Bootstrap current and neoclassical transport in tokamaks of arbitrary collisionality and aspect ratio
  4. A study of picosecond laser–solid interactions up to 1019 W cm−2
  5. Lattice waves in dust plasma crystals
Go to AIP Home
Copyright © American Institute of Physics
close