Turbulence Velocimetry of Tangential Fast Imaging Data on QUEST
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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.
- Plasma and Fusion Research
Plasma and Fusion Research 8(0), 2402098-2402098, 2013
The Japan Society of Plasma Science and Nuclear Fusion Research