作者机构:
[赵芳; 徐守龙] School of Resource Environment and Safety Engineering, University of South China, Hengyang;421001, China;[邹树梁] Hunan Provincial Key Laboratory of Emergency Safety Technology and Equipment for Nuclear Facilities, Hengyang;[徐涛] Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu;610213, China
通讯机构:
Hunan Provincial Key Laboratory of Emergency Safety Technology and Equipment for Nuclear Facilities, Hengyang, China
作者机构:
[余修武; 秦晓坤; 刘永] School of Resources Environment and Safety Engineering, University of South China, Hengyang;421001, China;[余修武; 秦晓坤; 刘永] 421001, China
通讯机构:
[Qin, X.] S;School of Resources Environment and Safety Engineering, University of South China, Hengyang, China
作者机构:
[Qin, Ya-guang] Power China Huadong Engn Corp Ltd, Hangzhou 311122, Peoples R China.;[Gu, De-sheng; Yang, Dong-jie; Qin, Ya-guang; Feng, Chun-di; Ma, Shao-wei; Hu, Jian-hua] Cent South Univ, Sch Resources & Safety Engn, Changsha 410083, Peoples R China.;[Bai, Xin] Univ South China, Sch Resources Environm & Safety Engn, Hengyang 421000, Peoples R China.
关键词:
grain deformation;in situ XCT;failure behavior;Stokes rotation;material line
摘要:
This work aimed to quantify the physical and mechanical behavior of three-dimensional microstructures in rocks under uniaxial compression. A high-precision in situ XCT (X-ray transmission computed tomography) technology was applied to investigating the behavior of mineral grains in sandstone: the movement, the rotation deformation, and the principal strains between fault zone and non-fault zone. The results indicate that after unloading, the shear strain of mineral grains is periodic in the radial direction, the strain of mineral grains in the fracture zone is about 30 times of the macro strain of the specimen, which is about 5 times in the non-fracture zone, and the shear strain near the fault zone is larger than the compressive strain, and there is the shear stress concentration feature.
作者机构:
[杨光; 钟翊君; 龚学余; 黄千红] Department of Nuclear Science and Technology, University of South China, Hengyang, 421001, China;[郑平卫] Department of Resource Environment and Safety Engineering, University of South China, Hengyang, 421001, China;[王占辉] Institute of Fusion Sciences, Southwestern Institute of Physics, Chengdu, 610000, China
通讯机构:
[Zhong, Y.; Gong, X.] D;Department of Nuclear Science and Technology, China
关键词:
杂质输运;电子回旋波
摘要:
本文基于OMFIT(One Modeling Framework for Integrated Tasks)平台,结合中国环流器二号M(HL-2M)托卡马克装置参数,自洽耦合等离子体平衡、外部辅助加热和电流驱动、输运等物理过程,考虑杂质浓度变化引起的等离子体密度、温度等输运量变化,以及引起的等离子体磁面中心Shafranov位移变化,从理论上进行杂质浓度变化对电子回旋波(Electron Cyclotron Wave,ECW)沉积位置和驱动电流效率的影响研究.研究结果表明,考虑杂质对等离子体的影响时,随着杂质浓度的增加,ECW沉积径向位置先向等离子体芯部移动然后向边缘移动,电流驱动效率先增加后减小.不考虑杂质对等离子体影响时,ECW沉积位置基本不变,电流驱动效率降低.
作者机构:
[刘杰豪; 洪昌寿] School of Resource Environment and Safety Engineering, University of South China, Hunan, Hengyang, 421000, China;College of Physics and Optoelectronic Engineering, Shenzhen University, Guangdong, Shenzhen, 518000, China;[徐正华] College of Mathematics and Science, University of South China, Hunan, Hengyang, 421000, China;[刘永] School of Resource Environment and Safety Engineering, University of South China, Hunan, Hengyang, 421000, China, College of Physics and Optoelectronic Engineering, Shenzhen University, Guangdong, Shenzhen, 518000, China
通讯机构:
[Liu, Y.] S;School of Resource Environment and Safety Engineering, Hunan, China