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

Regular Articles

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

Author information

Santanu BANERJEE
IGSES, Kyushu University
Hideki ZUSHI
RIAM, Kyushu University
Nobuhiro NISHINO
Mechanical System Engineering, Hiroshima University
Yoshihiko NAGASHIMA
RIAM, Kyushu University
Kazuaki HANADA
RIAM, Kyushu University
Saya TASHIMA
IGSES, Kyushu University
Tsubasa INOUE
IGSES, Kyushu University
Kazuo NAKAMURA
RIAM, Kyushu University
Hiroshi IDEI
RIAM, Kyushu University
Makoto HASEGAWA
RIAM, Kyushu University
Akihide FUJISAWA
RIAM, Kyushu University
Keisuke MATSUOKA
RIAM, Kyushu University

Keywords: particle image velocimetry, fast imaging, turbulence, plasma flow

JOURNAL FREE ACCESS

2013 Volume 8 Pages 2402098

DOI https://doi.org/10.1585/pfr.8.2402098

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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.

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