In this work,the anomalous transport driven by the ion temperature gradient instability is investigated in an anisotropic deuterium-tritium(D-T)plasma.The anisotropic factorα,defined as the ratio of perpendicular tem...In this work,the anomalous transport driven by the ion temperature gradient instability is investigated in an anisotropic deuterium-tritium(D-T)plasma.The anisotropic factorα,defined as the ratio of perpendicular temperature to parallel temperature,is introduced to describe the temperature anisotropy in the equilibrium distribution function.The linear dispersion relation in local kinetic limit is derived,and then numerically evaluated to study the dependence of mode frequency on the anisotropic factorαof D and the fraction of T particleεTby choosing three sets of typical parameters,denoted as the cyclone base case,ITER and CFETR cases.Based on the linear results,the mixing length model approximation is adopted to analyze the quasi-linear particle and energy fluxes for D and T.It is found that choosing smallαand largeεTis beneficial for the confinement of particle and energy for D and T.This work may be helpful for the estimation of turbulent transport level in the ITER and CFETR devices.展开更多
New energy is considered to be an indispensable means to significantly reduce carbon emissions and to achieve the temperature-control goals defined by the Paris Climate Accord.Despite the bright future,the inherent ch...New energy is considered to be an indispensable means to significantly reduce carbon emissions and to achieve the temperature-control goals defined by the Paris Climate Accord.Despite the bright future,the inherent characteristics,including volatility,intermittency and uneven seasonal and geographical distributions,and the rapid growth of installations make it increasingly difficult to connect green electricity to grids.This becomes a dominating bottleneck for the low-carbon transition of China Energy Group(CE).This paper aims to help with the implementation of the new-energy development plan and to define the low-carbon energy-transition path for CE.Based on the current industry structure of CE,Shenhua Engineering Technology Co.,Ltd proposes the concept of an‘integrated energy corridor’.The integrated energy corridor represents a comprehensive energy-transmission channel with coal,green electricity,green hydrogen,green oxygen and other green energy products such as transmission media,railways,pipelines and power grids as transmission means and thermal power,coal chemical plants,cities,etc.along the route as new-energy consumers and regulators.The integrated energy corridor can support the rapid development of new-energy assets and the low-carbon transition of CE.展开更多
基金supported by the National MCF Energy R&D Program of China(No.2019YFE03060000)National Natural Science Foundation of China(Nos.12005063,12175228,11875131 and 11675053)。
文摘In this work,the anomalous transport driven by the ion temperature gradient instability is investigated in an anisotropic deuterium-tritium(D-T)plasma.The anisotropic factorα,defined as the ratio of perpendicular temperature to parallel temperature,is introduced to describe the temperature anisotropy in the equilibrium distribution function.The linear dispersion relation in local kinetic limit is derived,and then numerically evaluated to study the dependence of mode frequency on the anisotropic factorαof D and the fraction of T particleεTby choosing three sets of typical parameters,denoted as the cyclone base case,ITER and CFETR cases.Based on the linear results,the mixing length model approximation is adopted to analyze the quasi-linear particle and energy fluxes for D and T.It is found that choosing smallαand largeεTis beneficial for the confinement of particle and energy for D and T.This work may be helpful for the estimation of turbulent transport level in the ITER and CFETR devices.
文摘New energy is considered to be an indispensable means to significantly reduce carbon emissions and to achieve the temperature-control goals defined by the Paris Climate Accord.Despite the bright future,the inherent characteristics,including volatility,intermittency and uneven seasonal and geographical distributions,and the rapid growth of installations make it increasingly difficult to connect green electricity to grids.This becomes a dominating bottleneck for the low-carbon transition of China Energy Group(CE).This paper aims to help with the implementation of the new-energy development plan and to define the low-carbon energy-transition path for CE.Based on the current industry structure of CE,Shenhua Engineering Technology Co.,Ltd proposes the concept of an‘integrated energy corridor’.The integrated energy corridor represents a comprehensive energy-transmission channel with coal,green electricity,green hydrogen,green oxygen and other green energy products such as transmission media,railways,pipelines and power grids as transmission means and thermal power,coal chemical plants,cities,etc.along the route as new-energy consumers and regulators.The integrated energy corridor can support the rapid development of new-energy assets and the low-carbon transition of CE.
