Turbulence velocimetry of tangential fast imaging data on QUEST

Santanu Banerjee; Hideki Zushi; Nobuhiro Nishino; Yoshihiko Nagashima; Kazuaki Hanada; Saya Tashima; Tsubasa Inoue; Kazuo Nakamura; Hiroshi Idei; Makoto Hasegawa; Akihide Fujisawa; Keisuke Matsuoka

doi:10.1585/pfr.8.2402098

Turbulence velocimetry of tangential fast imaging data on QUEST

Santanu Banerjee, Hideki Zushi, Nobuhiro Nishino, Yoshihiko Nagashima, Kazuaki Hanada, Saya Tashima, Tsubasa Inoue, Kazuo Nakamura, Hiroshi Idei, Makoto Hasegawa, Akihide Fujisawa, Keisuke Matsuoka

Division of Nuclear Fusion Dynamics

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

Abstract

A particle image velocimetry technique based on orthogonal dynamic programming is developed to measure the time resolved flow field of the fluctuating structures at the plasma edge and scrape off layer. This nonintrusive technique can provide two dimensional velocity fields at high spatial and temporal resolution from a fast framing image sequence and hence can provide better insights in plasma flow as compared to conventional probe measurements. Applicability of the technique is tested with simulated image pairs. Finally, it is applied to tangential fast visible images of QUEST as a test case to estimate the scrape off layer flow in Ohmic and ECRH driven plasma discharges.

Original language	English
Article number	2402098
Journal	Plasma and Fusion Research
Volume	8
DOIs	https://doi.org/10.1585/pfr.8.2402098
Publication status	Published - 2013

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1585/pfr.8.2402098

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title = "Turbulence velocimetry of tangential fast imaging data on QUEST",

abstract = "A particle image velocimetry technique based on orthogonal dynamic programming is developed to measure the time resolved flow field of the fluctuating structures at the plasma edge and scrape off layer. This nonintrusive technique can provide two dimensional velocity fields at high spatial and temporal resolution from a fast framing image sequence and hence can provide better insights in plasma flow as compared to conventional probe measurements. Applicability of the technique is tested with simulated image pairs. Finally, it is applied to tangential fast visible images of QUEST as a test case to estimate the scrape off layer flow in Ohmic and ECRH driven plasma discharges.",

author = "Santanu Banerjee and Hideki Zushi and Nobuhiro Nishino and Yoshihiko Nagashima and Kazuaki Hanada and Saya Tashima and Tsubasa Inoue and Kazuo Nakamura and Hiroshi Idei and Makoto Hasegawa and Akihide Fujisawa and Keisuke Matsuoka",

note = "Publisher Copyright: {\textcopyright} 2013 The Japan Society of Plasma Science and Nuclear Fusion Research.",

year = "2013",

doi = "10.1585/pfr.8.2402098",

language = "English",

volume = "8",

journal = "Plasma and Fusion Research",

issn = "1880-6821",

publisher = "The Japan Society of Plasma Science and Nuclear Fusion Research (JSPF)",

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TY - JOUR

T1 - Turbulence velocimetry of tangential fast imaging data on QUEST

AU - Banerjee, Santanu

AU - Zushi, Hideki

AU - Nishino, Nobuhiro

AU - Nagashima, Yoshihiko

AU - Hanada, Kazuaki

AU - Tashima, Saya

AU - Inoue, Tsubasa

AU - Nakamura, Kazuo

AU - Idei, Hiroshi

AU - Hasegawa, Makoto

AU - Fujisawa, Akihide

AU - Matsuoka, Keisuke

PY - 2013

Y1 - 2013

N2 - A particle image velocimetry technique based on orthogonal dynamic programming is developed to measure the time resolved flow field of the fluctuating structures at the plasma edge and scrape off layer. This nonintrusive technique can provide two dimensional velocity fields at high spatial and temporal resolution from a fast framing image sequence and hence can provide better insights in plasma flow as compared to conventional probe measurements. Applicability of the technique is tested with simulated image pairs. Finally, it is applied to tangential fast visible images of QUEST as a test case to estimate the scrape off layer flow in Ohmic and ECRH driven plasma discharges.

AB - A particle image velocimetry technique based on orthogonal dynamic programming is developed to measure the time resolved flow field of the fluctuating structures at the plasma edge and scrape off layer. This nonintrusive technique can provide two dimensional velocity fields at high spatial and temporal resolution from a fast framing image sequence and hence can provide better insights in plasma flow as compared to conventional probe measurements. Applicability of the technique is tested with simulated image pairs. Finally, it is applied to tangential fast visible images of QUEST as a test case to estimate the scrape off layer flow in Ohmic and ECRH driven plasma discharges.

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JO - Plasma and Fusion Research

JF - Plasma and Fusion Research

M1 - 2402098

ER -

Turbulence velocimetry of tangential fast imaging data on QUEST

Abstract

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