Article
Physics, Fluids & Plasmas
Jiale Chen, Vincent S. Chan, Xiang Jian, Xinjun Zhang, Qilong Ren, Guoqiang Li, Chengxi Zhou
Summary: This study designs hybrid scenario plasmas at flat-top phase using integrated modeling to achieve the goals of demonstrating DEMO relevant fusion power level and tritium self-sufficiency. The physics justification for the selection of plasma density, Z(eff), safety factor profile, and the choice of auxiliary heating and current drive is presented. Turbulent transport analysis shows that electromagnetic effects can enhance energy confinement but reduce particle confinement and thus fusion power.
Article
Physics, Fluids & Plasmas
T. Rafiq, J. Weiland
Summary: The integrated ITER simulations investigated the dependencies of fusion power production on parameters such as magnetic-q, edge density fueling strength, and neoclassical transport. Different modes dominate the interior and the barrier, with varying effects of changes in magnetic-q on ballooning and peeling modes. Additionally, the impact of alpha heating, neoclassical transport, and magnetic field strength on edge barriers and MHD modes was examined.
Article
Computer Science, Information Systems
Hanae Errousso, Jihane El Ouadi, El Arbi Abdellaoui Alaoui, Siham Benhadou, Hicham Medromi
Summary: This paper presents a solution for allocating parking spaces to carriers and individuals under uncertain conditions. The solution distributes parking requests and ranks available spaces through two allocation levels, and includes a conflict management approach.
JOURNAL OF KING SAUD UNIVERSITY-COMPUTER AND INFORMATION SCIENCES
(2022)
Article
Physics, Fluids & Plasmas
Xueyun Wang, Xueqiao Xu, Philip B. Snyder, Zeyu Li
Summary: The BOUT++ six-field turbulence code was used to simulate different scenarios of ITER operation and compare their characteristics. The study found that different types of ELMs dominate in different scenarios and result in varying energy loss fractions.
Article
Clinical Neurology
Ashlee Wheaton, Patrick T. Fok, Jessalyn K. Holodinsky, Peter Vanberkel, David Volders, Noreen Kamal
Summary: This study investigates the dilemma of transportation options for ischemic stroke patients occurring outside of hospital catchment areas capable of Endovascular Treatment, predicting optimal strategies considering patient outcomes and transport costs. By incorporating air and rotary wing transportation, the research aims to optimize treatment outcomes for patients while controlling costs effectively.
FRONTIERS IN NEUROLOGY
(2021)
Article
Physics, Applied
B. Kumari, R. Sharma, M. Sahoo
Summary: Cu-carbon hybrid interconnects show superior electro-thermal performance compared to copper, with lower temperature rise and uniform heat distribution, making them a potential replacement for copper in nanoscale systems.
APPLIED PHYSICS LETTERS
(2022)
Article
Forestry
Anil Orhan Akay, Murat Demir
Summary: This study aims to reveal the weight values of effective criteria for selecting suitable vehicle types in forest products transportation using a hybrid fuzzy multi-criteria decision-making method. The environmental damage criterion was found to be the most important factor, followed by cost and operational performance. Different tree species and varying amounts of roundwoods were observed to affect the rankings of vehicle suitability in different transportation scenarios.
Article
Physics, Fluids & Plasmas
K. E. Thome, X. D. Du, B. A. Grierson, G. J. Kramer, C. C. Petty, C. Holland, M. Knolker, G. R. McKee, J. McClenaghan, D. C. Pace, T. L. Rhodes, S. P. Smith, C. Sung, F. Turco, M. A. Van Zeeland, L. Zeng, Y. B. Zhu
Summary: The study investigates the thermal and fast-ion transport properties of steady-state hybrid discharges in DIII-D, showing changes in transport levels with adjustments in torque/rotation and Te/Ti ratios. Various instabilities, such as high-k modes and fishbones, are observed to influence the fast-ion transport and turbulence in these plasmas, providing insights for potential application in fusion reactors.
Article
Environmental Sciences
Muhammad Shahid Iqbal, Majedul Islam, Mujtaba Hassan, Hazrat Bilal, Izaz Ali Shah, Tzoraki Ourania
Summary: Surface water quality in the Sutlej River basin is severely polluted due to direct wastewater discharge from urban areas. This study assesses the future E. coli load and concentrations using modeling and scenarios, and finds that improvements in sanitation and treatment options can reduce microbiological concentrations in water resources. Socioeconomic factors play a crucial role in determining water quality, alongside climate change.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Industrial
Lida Naseh Moghanlou, Francesco Di Maio, Enrico Zio
Summary: This paper proposes a probabilistic scenario analysis framework to quantify service losses and assess the economic losses and transport reliability of road-power infrastructure under different car accident scenarios. The framework allows comparing alternative designs and evaluating their performance using graphical representations.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2024)
Article
Physics, Multidisciplinary
Hong-bo Cai, Xin-xin Yan, Pei-lin Yao, Shao-ping Zhu
Summary: This study presents a new framework to simulate shock waves and hydrodynamic instabilities in high-density plasmas, with ions modeled using particle-in-cell method and electrons as a massless fluid. It investigates turbulent mixing between light and heavy plasmas initiated by shock waves, revealing the role of self-generated electromagnetic fields in late-time plasma mixing. The proposed method is able to describe shock-driven hydrodynamic instabilities involving mixing and electromagnetic fields at the interface in plasma.
MATTER AND RADIATION AT EXTREMES
(2021)
Article
Business
Ayedh Al-Mutairi, Sharaf AlKheder, Shaikhah Alzwayid, Dalal Talib, Mariam Bn Heji, James H. Lambert
Summary: Port systems are subject to various disruptions, and scenario-based preference modeling can help define the resilience of the system.
TECHNOLOGICAL FORECASTING AND SOCIAL CHANGE
(2022)
Article
Engineering, Civil
Qin Zhang, Rolf Moeckel, Kelly J. Clifton
Summary: Existing transport demand models lack the knowledge and experience in pedestrian modeling for health assessment. This paper presents the MITO/MoPeD model, which integrates fine-grained pedestrian modeling into an agent-based transport model, and applies it to the Munich metropolitan area. The model outperforms the existing Munich Model in simulating pedestrian travel behavior and addresses issues like overestimating physical activity volumes. The MITO/MoPeD model delivers more precise travel outcomes and has significant implications for pedestrian planning issues.
Article
Computer Science, Interdisciplinary Applications
Mohamed Khafagy, Sarah Dickson-Anderson, Wael El-Dakhakhni
Summary: A hybrid model is developed in this paper to simulate solute transport in discrete fracture networks, showing higher efficiency and lower dispersion compared to existing analytical and computational fluid dynamics models. The study indicates that factors such as diffusion coefficients and fracture characteristics significantly impact solute migration in fracture networks.
COMPUTERS AND GEOTECHNICS
(2022)
Article
Engineering, Civil
Katayoun Kargar, Mir Jafar Sadegh Safari, Khabat Khosravi
Summary: Sediment transport modeling is crucial in water resources and environmental engineering, with self-cleansing methods widely used to reduce pollution caused by sediment deposition. This study developed various models to simulate sediment transport under different conditions, with hybrid WIHW-RT and WIHW-RF models showing the best performance. The findings suggest that hybrid data mining methods provide more precise estimations compared to regression equations and standalone models, offering potential solutions for hydrological problems.
JOURNAL OF HYDROLOGY
(2021)
Article
Physics, Fluids & Plasmas
Zeyu Li, Yiren Zhu, Guoliang Xu, V. S. Chan, Xueqiao Xu, Jiale Chen, Rui Ding, Tianyang Xia, Xiang Jian, Yunpeng Zou, Chijie Xiao, Xiaogang Wang
Summary: This study investigates the ELM behavior, stationary and transient heat flux during the ELM crash phase for the CFETR 1 GW hybrid mode operation scenario. The research shows that the energy loss of ELM in this scenario is smaller compared to a Type-I ELM, and parametric analysis sheds light on the physics of a grassy ELM regime. Investigating the transient heat flux and its impact on the divertor target, the study concludes that external mitigation methods may be needed for the steady state operation of CFETR.
PLASMA PHYSICS AND CONTROLLED FUSION
(2021)
Article
Nuclear Science & Technology
Jiale Chen, Guozhang Jia, Nong Xiang
Summary: Simulation studies of core and edge plasmas were conducted at ASIPP to accommodate plasma profiles from core to edge for the CFETR physics design. The coupling between core and edge plasma modeling was described. Recent progress on integrated core-pedestal simulations and SOLPS simulations for plasmas in pedestal-SOL-divertor region was presented.
JOURNAL OF FUSION ENERGY
(2021)
Article
Physics, Multidisciplinary
Ji Wang, Jiale Chen, Bin Wu, Yuqing Chen, Zhen Yang, Chundong Hu, Yuanlai Xie, Yahong Xie, Xuexi Zhang
Summary: The neutral beamline on EAST is being upgraded by modifying its location and changing the injection direction, leading to improved neutral beam current drive (NBCD) performance, especially at beam energy below 70 keV.
Article
Physics, Fluids & Plasmas
X. M. Zhai, J. L. Chen, N. Xiang, X. Z. Gong, J. Huang, J. P. Qian, G. S. Xu, M. H. Li, H. Q. Liu, Q. Zang, T. Zhang, G. S. Li, M. F. Wu, Y. F. Jin
Summary: Theory-based integrated modeling has been validated against high-performance steady-state core plasmas on EAST in the high poloidal beta regime, showing good agreement with experimental measurements and providing physical insights for future predictive modeling.
Article
Physics, Fluids & Plasmas
Shengyu Shi, Jiale Chen, Xiang Jian, Bourdelle Clarrisse, Muquan Wu, Mingfu Wu, Yanmin Duan, Yan Chao, Ling Zhang, Yunxin Cheng, Jinping Qian, Andrea M. Garofalo, Xianzu Gong, Xiang Gao, Yuanxi Wan, Tomas Odstrcil
Summary: The behavior of core tungsten in a pure radio-frequency-heated long-pulse steady-state H-mode discharge in the Experimental Advanced Superconducting Tokamak (EAST) with an ITER-like divertor is analyzed using experimental diagnostic data and modeled using a combination of drift-kinetic neoclassical and gyro-fluid turbulent software. The study finds that turbulent transport dominates over neoclassical transport for tungsten and clarifies the effect of toroidal rotation on its transport.
Article
Physics, Fluids & Plasmas
Shengyu Shi, Jiale Chen, Clarisse Bourdelle, Xiang Jian, Tomas Odstrcil, Andrea M. Garofalo, Yunxin Cheng, Yan Chao, Ling Zhang, Yanmin Duan, Muquan Wu, Fang Ding, Yingying Li, Juan Huang, Jinping Qian, Xiang Gao, Yuanxi Wan
Summary: This study analyzes the behavior of heavy/high-Z impurity tungsten (W) in an improved high-performance fully non-inductive discharge on EAST with ITER-like divertor (ILD). It finds that W can be well controlled and clarifies the causes of no W accumulation by analyzing the background plasma parameters and modeling the W transport. The study also demonstrates the crucial role of high electron temperature (T (e)) and its gradient in preventing W accumulation by increasing the growth rate of linear instability.
Article
Physics, Fluids & Plasmas
X. Z. Gong, A. M. Garofalo, J. Huang, J. P. Qian, A. Ekedah, R. Maingi, C. T. Holcomb, F. K. Liu, Y. P. Zhao, B. J. Xiao, J. S. Hu, C. D. Hu, L. Q. Hu, M. Wang, H. D. Xu, E. Li, L. Zeng, Q. Zang, H. Q. Liu, B. Lyu, Q. P. Yuan, K. D. Li, B. Zhang, J. Y. Zhang, T. Q. Jia, M. Q. Wu, J. L. Chen, X. Zhu, M. H. Li, X. J. Zhang, L. Zhang, Y. M. Duan, L. Wang, R. Ding, Y. W. Sun, G. S. Xu, Y. F. Liang, N. Xiang, B. N. Wan, J. G. Li
Summary: A recent EAST experiment has demonstrated long pulse steady-state high plasma performance and core-edge integration with multi-RF power and current drive, achieving high density and strong confinement.
Article
Physics, Fluids & Plasmas
J. Varela, J. Huang, D. A. Spong, J. Chen, V Chan, L. Garcia, A. Wingen, Y. Ghai, Y. Zou
Summary: The aim of this study is to analyze the stability of Alfven eigenmodes in the CFETR plasma for steady state operations. The study shows that the location of the internal transport barrier and the inclusion of multiple energetic particle populations and finite Larmor radius damping effects can affect the stability of the plasma.
Article
Physics, Fluids & Plasmas
T. F. Tang, X. Q. Xu, G. Q. Li, J. L. Chen, V. S. Chan, T. Y. Xia, X. Gao, D. Z. Wang, J. G. Li
Summary: The EPED1 model and self-consistent core-pedestal coupling are used in designing the pedestal structure of the CFETR steady-state scenario, with key parameters based on the grassy ELM experimental database. Simulations show the ELM size is around 0.2% and peak ballooning modes at high-n values in the multi-mode coexistence stage significantly reduce particle and heat transport, leading to a smaller ELM size.
Article
Physics, Fluids & Plasmas
Shengyu Shi, Jiale Chen, Clarisse Bourdelle, Xiang Jian, Tomas Odstrcil, Andrea M. Garofalo, Yunxin Cheng, Yan Chao, Ling Zhang, Yanmin Duan, Mingfu Wu, Fang Ding, Jinping Qian, Xiang Gao
Summary: The accumulation behavior of heavy impurity tungsten in the core of hybrid plasmas on EAST has been analyzed. It is found that the large toroidal rotation and density peaking in the central region are the main reasons for tungsten accumulation. The modeling approach reproduces experimental observations and predicts the core density profile accurately.
Article
Physics, Fluids & Plasmas
Cheng-Xi Zhou, Jia-Le Chen, Vincent Chan, Xiang Jian, Ge Zhuang
Summary: This study considers both noninductive steady state operation and a hybrid scenario to fulfill the mission of a Chinese fusion engineering testing reactor. By optimizing the position of the magnetic shear and using radio frequency wave driven current, the target fusion power and fusion gain for steady state operation can be achieved.
PHYSICS OF PLASMAS
(2022)
Article
Physics, Fluids & Plasmas
Y. Zou, V. S. Chan, M. A. Van Zeeland, W. W. Heidbrink, Y. Todo, Wei Chen, Y. Wang, J. Chen
Summary: Based on the critical gradient model and simulation method, a combination of TGLFEP and EPtran codes were used to predict energetic particle transport induced by Alfven eigenmodes. The revised model successfully reproduced experimental profiles and compared AE transport thresholds to experimental data. The improved model was also applied to simulate alpha particle redistribution in a China Fusion Engineering Test Reactor scenario.
PHYSICS OF PLASMAS
(2022)
Article
Physics, Fluids & Plasmas
J. Fu, J. Huang, J. F. Wang, L. M. Yu, M. A. Van Zeeland, J. F. Chang, B. L. Hao, J. L. Chen, M. Q. Wu, W. H. Hu, Z. Xu, W. Gao, J. X. Su, Y. X. Sun, R. R. Liang, Q. Zang, H. Q. Liu, B. Lyu, G. Q. Zhong, B. Zhang, X. Z. Gong
Summary: This study focuses on the characterization of beam ion loss during neutral beam injection (NBI) and proposes methods to improve beam ion confinement. The results show that the dominant mechanisms of beam ion loss are shine-through loss, prompt loss, and stochastic ripple loss. The study provides valuable insights for the improvement of beam ion population confinement and the evaluation of the NBI system on EAST and future tokamaks.
PLASMA PHYSICS AND CONTROLLED FUSION
(2022)
Article
Physics, Fluids & Plasmas
Taotao Zhou, Nong Xiang, Chunyun Gan, Xueyi Wang, Guozhang Jia, Jiale Chen, Xuemei Zhai, Yueheng Huang
Summary: In this work, the parametric instability behavior of lower hybrid waves on the Experimental Advanced Superconducting Tokamak is investigated using first-principle simulation. The dominance of ICQM-type and ISQM-type decay channels in different plasma states is observed, and electron heating due to wave energy dissipation and production of fast electrons is found.
PHYSICS OF PLASMAS
(2022)
Article
Physics, Multidisciplinary
Longhao Ma, Nong Xiang, Yemin Hu, Yueheng Huang, Jiale Chen, Xuemei Zhai, Zehua Qian, Xianzu Gong, Kaixuan Ye, Fudi Wang, Yifei Jin, Jinping Qian, Qing Zang, Haiqing Liu
Summary: In recent experiments on EAST, it was observed that an increase in the line-averaged electron density and a decrease in the plasma internal inductance occurred during the duration of neutral beam injection (NBI). Simulations were conducted to explain this observation, showing that the L-H transition is triggered after NBI, leading to the formation of a density pedestal. This change in the plasma density gradient results in an increase in eta i and a transition from trapped electron modes to ion temperature gradient dominant turbulence regime.
