Test of the telegraph equation for transport dynamics in plasma

Shigeru Inagaki; Kimitaka Itoh; Sanae I. Itoh; Yusuke Kosuga; Maxime Lesur; Naohiro Kasuya

doi:10.1585/pfr.10.1203002

Test of the telegraph equation for transport dynamics in plasma

Shigeru Inagaki, Kimitaka Itoh, Sanae I. Itoh, Yusuke Kosuga, Maxime Lesur, Naohiro Kasuya

Division of Nuclear Fusion Dynamics

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

We have tested the telegraph equation for transport dynamics in magnetized plasma by comparing its resultswith experimental observations in the Large Helical Device [S. Inagaki et al., Nucl. Fusion 53, 113006 (2013)]. The telegraph equation includes a finite relaxation time for turbulence intensity in response to the changes in global plasma parameters. This model was applied to nondiffusive radial heat pulse propagation under the periodic modulation of the heating power. The model showed some success in reproducing the amplitudes of higher harmonics. However, the phase relation between the temperature gradient and heat flux was opposite to that in experimental observations.

Original language	English
Article number	1203002
Pages (from-to)	1-2
Number of pages	2
Journal	Plasma and Fusion Research
Volume	10
Issue number	2015
DOIs	https://doi.org/10.1585/pfr.10.1203002
Publication status	Published - 2015

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1585/pfr.10.1203002

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abstract = "We have tested the telegraph equation for transport dynamics in magnetized plasma by comparing its resultswith experimental observations in the Large Helical Device [S. Inagaki et al., Nucl. Fusion 53, 113006 (2013)]. The telegraph equation includes a finite relaxation time for turbulence intensity in response to the changes in global plasma parameters. This model was applied to nondiffusive radial heat pulse propagation under the periodic modulation of the heating power. The model showed some success in reproducing the amplitudes of higher harmonics. However, the phase relation between the temperature gradient and heat flux was opposite to that in experimental observations.",

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AU - Inagaki, Shigeru

AU - Itoh, Kimitaka

AU - Itoh, Sanae I.

AU - Kosuga, Yusuke

AU - Lesur, Maxime

AU - Kasuya, Naohiro

PY - 2015

Y1 - 2015

N2 - We have tested the telegraph equation for transport dynamics in magnetized plasma by comparing its resultswith experimental observations in the Large Helical Device [S. Inagaki et al., Nucl. Fusion 53, 113006 (2013)]. The telegraph equation includes a finite relaxation time for turbulence intensity in response to the changes in global plasma parameters. This model was applied to nondiffusive radial heat pulse propagation under the periodic modulation of the heating power. The model showed some success in reproducing the amplitudes of higher harmonics. However, the phase relation between the temperature gradient and heat flux was opposite to that in experimental observations.

AB - We have tested the telegraph equation for transport dynamics in magnetized plasma by comparing its resultswith experimental observations in the Large Helical Device [S. Inagaki et al., Nucl. Fusion 53, 113006 (2013)]. The telegraph equation includes a finite relaxation time for turbulence intensity in response to the changes in global plasma parameters. This model was applied to nondiffusive radial heat pulse propagation under the periodic modulation of the heating power. The model showed some success in reproducing the amplitudes of higher harmonics. However, the phase relation between the temperature gradient and heat flux was opposite to that in experimental observations.

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Test of the telegraph equation for transport dynamics in plasma

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