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Generation of sheared poloidal flows via Reynolds stress and transport barrier physics

机译:通过雷诺应力和输运势垒物理产生剪切的胶体流

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A view of the latest experimental results and progress in the understanding of the role of poloidal flows driven by fluctuations via Reynolds stress is given. Reynolds stress shows a radial gradient close to the velocity shear layer location in tokamaks and stellarators, indicating that this mechanism may drive significant poloidal flows in the plasma boundary. Observation of the generation of E x B sheared flows via Reynolds stress at the ion Bernstein resonance layer has been noticed in toroidal magnetized plasmas. The experimental evidence of sheared E x B flows linked to the location of rational surfaces in stellarator plasmas might be interpreted in terms of Reynolds stress sheared driven flows. These results show that E x B sheared flows driven by fluctuations can play an important role in the generation of transport barriers. [References: 38]
机译:给出了最新的实验结果以及在理解雷诺应力引起的波动驱动的胶体流作用中的进展的观点。雷诺应力显示出在托卡马克和恒星中靠近速度剪切层位置的径向梯度,表明该机制可能驱动等离子体边界中大量的胶体流动。在环形磁化等离子体中,已经注意到在离子伯恩斯坦共振层处通过雷诺应力产生的E x B剪切流的观察。与恒星等离子中的合理表面的位置有关的剪切的E x B流动的实验证据可以用雷诺应力剪切驱动的流动来解释。这些结果表明,由波动驱动的E x B剪切流可以在运输屏障的产生中发挥重要作用。 [参考:38]

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