On the Radial Structure of Fluctuations and Turbulence Induced Flows Metadata

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Title

  • Main Title On the Radial Structure of Fluctuations and Turbulence Induced Flows

Creator

  • Author: Hidalgo, C.
    Creator Type: Personal
  • Author: Pedrosa, M. A.
    Creator Type: Personal
  • Author: Milligen, B. V /
    Creator Type: Personal
  • Author: Sanchez, R. B.
    Creator Type: Personal
  • Author: Garcia-Cortes, I.
    Creator Type: Personal
    Creator Info: Euratom-Ciemat, Madrid (Spain)
  • Author: Batanov, G.
    Creator Type: Personal
  • Author: Fedyanin, O.
    Creator Type: Personal
  • Author: Kharchev, N.
    Creator Type: Personal
  • Author: Kholnov, Y. V.
    Creator Type: Personal
  • Author: Shchepetov, S. V.
    Creator Type: Personal
  • Author: Sarksyan, K.
    Creator Type: Personal
  • Author: Skvortsova, N. N.
    Creator Type: Personal
    Creator Info: General Physics, Moscow (USSR)
  • Author: Garcia, L.
    Creator Type: Personal
    Creator Info: Carlos III University, Madrid (Spain)
  • Author: Carreras, B. A.
    Creator Type: Personal
    Creator Info: Oak Ridge National Lab., TN (United States)

Contributor

  • Sponsor: United States. Department of Energy. Office of Energy Research.
    Contributor Type: Organization
    Contributor Info: USDOE Office of Energy Research, Washington, DC (United States)

Publisher

  • Name: Oak Ridge National Laboratory
    Place of Publication: Tennessee
    Additional Info: Oak Ridge National Lab., TN (United States)

Date

  • Creation: 1997-01-01

Language

  • English

Description

  • Content Description: Comparative studies of the structure of turbulence have been carried out in stellarator plasmas with low (TJ-IU) and medium (L2-M) magnetic shear. In both devices, the value of the radial coherence of fluctuations is bursty. In the plasma edge region, the radial coherence is dominated by low frequency fluctuations ({lt}200 KHZ) in TJ-IU, whereas in L2-M, the radial coherence is due to high frequency fluctuations ({gt} 100 kHz). Numerical calculations of resistive ballooning turbulence show that in the non-linear phase, the correlation length is of the order of the width of the linear mode poloidal components, whereas in the linear phase, the correlation length is related to the width of the envelope. Toroidal coupling effects appear to be relevant in the nonlinear phase in the proximity of instability thresholds. The electrostatic Reynolds stress shows a radial gradient close to the velocity shear location in the TJ-IU torsatron, thus suggesting that this mechanism can drive poloidal flows.
  • Physical Description: 11 p.

Subject

  • Keyword: Tj-Iu Torsatron
  • Keyword: Magnetic Fields
  • Keyword: Electrostatics
  • Keyword: Correlations
  • STI Subject Categories: 70 Plasma Physics And Fusion
  • Keyword: L-2 Stellarator
  • Keyword: Fluctuations
  • Keyword: Experimental Data
  • Keyword: Plasma Waves
  • Keyword: Turbulence
  • Keyword: Plasma Radial Profiles
  • Keyword: Fluid Flow
  • Keyword: Plasma

Source

  • Other Information: DN: Prepared in collaboration with General Physics Inst., Moscow, Russia,Carlos III Univ., Madrid, Spain, and Euratom-Ciemat, Madrid, Spain. [540 709900]

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Other: DE98000679
  • Report No.: ORNL/CP--94616
  • Report No.: CONF-970911--
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 618163
  • Archival Resource Key: ark:/67531/metadc691944

Note

  • Display Note: OSTI as DE98000679
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