[Table of Contents]

Plasma and Fusion Research

Volume 8, 2402098 (2013)

Regular Articles

Turbulence Velocimetry of Tangential Fast Imaging Data on QUEST
Santanu BANERJEE, Hideki ZUSHI1), Nobuhiro NISHINO2), Yoshihiko NAGASHIMA1), Kazuaki HANADA1), Saya TASHIMA, Tsubasa INOUE, Kazuo NAKAMURA1), Hiroshi IDEI1), Makoto HASEGAWA1), Akihide FUJISAWA1) and Keisuke MATSUOKA1)
IGSES, Kyushu University, 6-1 Kasuga Koen, Kasuga-shi, Fukuoka 816-8580, Japan
1)
RIAM, Kyushu University, 6-1 Kasuga Koen, Kasuga-shi, Fukuoka 816-8580, Japan
2)
Mechanical System Engineering, Hiroshima University, Hiroshima 739-8527, Japan
(Received 7 December 2012 / Accepted 29 May 2013 / Published 15 August 2013)

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 non-intrusive 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.

Keywords

particle image velocimetry, fast imaging, turbulence, plasma flow

DOI: 10.1585/pfr.8.2402098

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This paper may be cited as follows:

Santanu BANERJEE, Hideki ZUSHI, Nobuhiro NISHINO, Yoshihiko NAGASHIMA, Kazuaki HANADA, Saya TASHIMA, Tsubasa INOUE, Kazuo NAKAMURA, Hiroshi IDEI, Makoto HASEGAWA, Akihide FUJISAWA and Keisuke MATSUOKA, Plasma Fusion Res. 8, 2402098 (2013).