Overview of the Recent Study on ELM Mitigation Physics with Different External Actuators on HL-2A Tokamak
| العنوان: | Overview of the Recent Study on ELM Mitigation Physics with Different External Actuators on HL-2A Tokamak |
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| المؤلفون: | A. S. Liang, Q.W. Yang, Wulyu Zhong, B. Lu, B. B. Feng, Z. X. Wang, Y. Liu, Z. H. Wang, Y. H. Zhou, C. H. Liu, J. Wen, X. Y. Bai, Y. P. Zhang, J. M. Gao, G. L. Xiao, X. Q. Ji, P. W. Shi, D. Mazon, X. M. Song, C. Y. Chen, X.L. Zou, M. K. Han, M. Xu, Yves Peysson, J. Cheng, Z. B. Shi, W. Chen, L. Liu, X.R. Duan, Z. C. Yang, M. Goniche, Annika Ekedahl, P. Sun, D. L. Yu, L. W. Yan, G. L. Yuan, W. W. Xiao, Lena Delpech, K. Zhang, Mitsutaka Isobe, X. X. He, G. Giruzzi, X.T. Ding, Y.G. Li, P. F. Zhang, Z. H. Huang, Z. Y. Cui, T. Hoang, T. B. Wang, C. F. Dong, A.D. Liu, J. Q. Dong |
| المصدر: | Journal of Fusion Energy. 39:300-312 |
| بيانات النشر: | Springer Science and Business Media LLC, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Physics, Nuclear and High Energy Physics, Tokamak, Turbulence, Plasma, Lower hybrid oscillation, 01 natural sciences, 010305 fluids & plasmas, Computational physics, law.invention, Physics::Fluid Dynamics, Nuclear Energy and Engineering, law, 0103 physical sciences, Turbulence kinetic energy, Wavenumber, Supersonic speed, 010306 general physics, Edge-localized mode |
| الوصف: | Mitigation of Edge localized mode(ELM) has been achieved with different external actuators such as lower hybrid wave (LHW), mixture supersonic molecular beam injection(SMBI), and laser blow-off(LBO) impurity seeding on HL-2A. During these experiments, the pedestal turbulence enhancement is commonly observed, which is found closely related to ELM mitigation. The turbulence enhancement is caused by the externally driven the velocity shear rate without change of the turbulence correlation length, but correlated to its radial wavenumber spectral shift. A common plausible mechanism for the ELM mitigation with different external source input seems to be involved. A modified theoretical model based on the turbulence radial wavenumber spectral shift is used and successfully interprets the experimental observations. The simulation suggests that a critical growth rate of the most unstable mode, also identified by the experimental results, survives in the competition of the velocity shear rate, enhancing the turbulence intensity. An example of the LHW case is used and good agreements have been found between the experimental results and simulation results. |
| تدمد: | 1572-9591 0164-0313 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::ca167350ed5ee20d48783f7d048303b9 https://doi.org/10.1007/s10894-021-00281-w |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........ca167350ed5ee20d48783f7d048303b9 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 15729591 01640313 |
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