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Investigation on the roles of equilibrium toroidal rotation during edge-localized mode mitigated by resonant magnetic perturbations

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Plasma Science and Technology 2024年第1期26卷 16-33页

作者：董良康陈少永牟茂淋罗杨秦晨晨唐昌建 College of Physics Sichuan UniversityChengdu 610064People’s Republic of China Key Laboratory of High Energy Density Physics and Technology of Ministry of Education Sichuan UniversityChengdu 610064People’s Republic of China Institute of Fusion Science School of Physical Science and TechnologySouthwest Jiaotong UniversityChengdu 610031People’s Republic of China

The effects of equilibrium toroidal rotation during edge-localized mode(ELM)mitigated by resonant magnetic perturbation(RMP)are studied with the experimental equilibria of the EAST tokamak based on the four-field model in the BOUT++*** the two main parameters to determine the toroidal rotation profiles,the rotation shear and magnitudes were separately scanned to investigate their roles in the impact of RMPs on peeling-ballooning(P-B)*** one hand,the results show that strong toroidal rotation shear is favorable for the enhancement of the self-generated E×B shearing ratewith RMPs,leading to significant ELM mitigation with RMP in the stronger toroidal rotation shear *** the other hand,toroidal rotation magnitudes may affect ELM mitigation by changing the penetration of the RMPs,more precisely the resonant *** can lead to a reduction in the pedestal energy loss by enhancing the multimode coupling in the turbulence transport *** shielding effects on RMPs increase with the toroidal rotation magnitude,leading to the enhancement of the multimode coupling with RMPs to be significantly ***,the reduction in pedestal energy loss by RMPs decreased with the rotation *** brief,the results show that toroidal rotation plays a dual role in ELM mitigation with RMP by changing the shielding effects of plasma by rotation magnitude and affectingby rotation *** the high toroidal rotation region,toroidal rotation shear is usually strong and hence plays a dominant role in the influence of RMP on P-B modes,whereas in the low rotation region,toroidal rotation shear is weak and has negligible impact on P-B modes,and the rotation magnitude plays a dominant role in the influence of RMPs on the P-B modes by changing the field ***,the dual role of toroidal rotation leads to stronger ELM mitigation with RMP,which may be achieved both in the low toroidal rotation region and the relatively high rotation regi

关键词： edge-localized mode peeling–ballooning modes resonant magnetic perturbation toroidal rotation plasma response tokamak

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The effect of resonant magnetic perturbation with different poloidal mode numbers on peeling-ballooning modes

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Plasma Science and Technology 2020年第11期22卷 1-10页

作者： Liangkang DONG Shaoyong CHEN maolin mou Changjian TANG College of Physics Sichuan UniversityChengdu 610065People's Republic of China Key Laboratory of High Energy Density Physic and Technology of Ministry of Education Sichuan UniversityChengdu 610065People's Republic of China

The effect of resonant magnetic perturbation(RMP)with different poloidal mode numbers on peeling-ballooning(P-B)modes is simulated with the BOUT++*** order to investigate the physical mechanism of edge-localized mode mitigated by RMP,a series of RMPs with different poloidal mode numbers are applied into the four-field P-B mode simulation module *** results indicate that RMP has a better reducing effect on the energy loss from the pedestal when the resonant position is near the bottom and top of pedestal rather than near the *** RMP could influence P-B modes through the following effects:on the one hand,the E×B shearing rate is significantly stronger when the RMP(resonant surface locates at the top of the pedestal)is added,which can suppress the radial propagation of the negative pressure perturbation and reduce energy loss from the *** the other hand,the coupling of toroidal modes in the nonlinear phase is enhanced when RMPs are added,which motivated the growth of multiple toroidal modes,and the turbulence fluctuation level is weaker with the RMP when the resonant surface is located at the bottom of the pedestal.

关键词： tokamak resonant magnetic perturbation edge-localized mode peeling-ballooning modes pedestal

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Mitigation of ELMs by Electrostatic Field in Tokamaks

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Journal of High Energy Physics, Gravitation and Cosmology 2019年第1期5卷 149-155页

作者： Zhongtian Wang Xiaochang Chen Yifan Yan Huidong Li Qian Liu maolin mou Na Wu Zhanhui Wang Rui Ke Lin Nie Ming Xu School of Sciences Nanchang University Nanchang China Southwestern Institute of Physics Chengdu China School of Science Xihua University Chengdu China Department of Engineering Physics Tsinghua University Beijing China College of Physical Science and Technology Sichuan University Chengdu China

Mitigation of ELMs by electrostatic field is studied. The perpendicular heating in cyclotron waves tends to pile up the resonant particles toward the low magnetic field side in which a electrostatic field may result [J. Y. Hsu, V. S. Chan, R. W. Harvey, R. Prater, and S. K. Wong, Phys. Rev. Lett. 53, 564 (1984)]. The electrostatic field can make circulating particles trapped or make trapped particles circulating depending on the field direction. The trapped- particle population and bootstrap current change accordantly. Modulating bootstrap current, mitigation of type-1 ELM by the electrostatic field is possible. The electrostatic potential needed for the mitigation is quantitatively estimated. Experiments by either ECRH or biasing are being prepared to verify the theory.

关键词： Electrostatic Trapping Bootstrap Current Mitigation Peeling-Ballooning Mode

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基于翻转课堂教学模式的“体育史”教学研究

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教育与教学研究 2017年第5期31卷 113-118页

作者：李欣吴启红陈茂林牟丽莎成都大学体育学院成都大学建筑与土木工程学院四川成都610106 四川工程职业技术学院四川德阳618000

通过在"体育史"教学中设计和应用翻转课堂教学模式,发现其可以有效地提高学生自主学习的热情、自控能力、表达能力和团队合作能力。提出加大对翻转课堂教学的支持力度,改进翻转课堂教学手段和理性看待翻转课堂教学模式三条改善策略。为... 详细信息

通过在"体育史"教学中设计和应用翻转课堂教学模式,发现其可以有效地提高学生自主学习的热情、自控能力、表达能力和团队合作能力。提出加大对翻转课堂教学的支持力度,改进翻转课堂教学手段和理性看待翻转课堂教学模式三条改善策略。为体育专业理论课教学推行翻转课堂教学模式,提高体育理论教学质量,丰富和发展体育教学理论提供借鉴和参考。

关键词：翻转课堂体育史教学研究

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甲基丙烯醛的合成

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石油化工 2011年第3期40卷 295-298页

作者：仲继燕牟东兰袁茂林付海燕陈华李贤均四川大学化学学院四川成都610064

以甲醛、丙醛和含仲胺功能基的330弱碱性环氧系阴离子交换树脂(简称330树脂)为原料,经Mannich反应和Mannich碱热分解反应合成了甲基丙烯醛;考察了反应条件对丙醛转化率和甲基丙烯醛选择性的影响,得到了适宜的反应条件。实验结果表明,在n... 详细信息

以甲醛、丙醛和含仲胺功能基的330弱碱性环氧系阴离子交换树脂(简称330树脂)为原料,经Mannich反应和Mannich碱热分解反应合成了甲基丙烯醛;考察了反应条件对丙醛转化率和甲基丙烯醛选择性的影响,得到了适宜的反应条件。实验结果表明,在n(丙醛)∶n(甲醛)∶n(330树脂中的仲胺)=1.0∶1.1∶1.0、Mannich反应温度45℃、Mannich反应时间50 min、分解温度75℃、分解时间70 min的反应条件下,丙醛转化率达99.5%、甲基丙烯醛选择性达93.1%。反应完成后,经过滤,330弱碱性环氧系阴离子交换树脂可从反应体系中分离并经稀酸和稀碱再生处理后可循环使用。循环实验结果表明,330树脂循环使用5次后,丙醛转化率变化不大。

关键词：甲基丙烯醛丙醛甲醛 330弱碱性环氧系阴离子交换树脂 Mannich反应分解反应

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