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Simulation method for electronic temperature evolution caused by EAST Tokamak radio frequency waves

An electronic temperature and tokamak technology, which is applied in the numerical simulation of the discharge of tokamak devices, and the field of electronic temperature evolution caused by EAST tokamak radio frequency waves, can solve the problem that the time accuracy is not high enough, the time and space accuracy of the electronic temperature distribution is limited, and it is difficult to meet the Real-time measurement and other problems, to make up for low accuracy, strong numerical stability, and high computational efficiency

Active Publication Date: 2021-06-15
DALIAN UNIV OF TECH
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Problems solved by technology

However, the time-space accuracy of the electronic temperature distribution measured by this method is limited, especially the time accuracy is not high enough to meet the needs of real-time measurement

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  • Simulation method for electronic temperature evolution caused by EAST Tokamak radio frequency waves
  • Simulation method for electronic temperature evolution caused by EAST Tokamak radio frequency waves
  • Simulation method for electronic temperature evolution caused by EAST Tokamak radio frequency waves

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Embodiment Construction

[0033] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and technical solutions.

[0034] The EAST tokamak device has such figure 1 The cross-sectional configuration shown, where the core position is the region containing the plasma during the experimental discharge. The EAST tokamak is equipped with a soft X-ray system to measure the spatial distribution of perturbed electron temperatures. first according to figure 1 The shown EAST geometry meshes the core plasma region. In the EAST tokamak discharge experiment, the suppression of magnetic islands is one of the main effects of radio frequency wave heating, so the initial magnetic field configuration usually contains magnetic island structures, such as figure 2 As shown, the reconnection of the magnetic field lines forms a magnetic island chain structure containing three magnetic islands in one period of the pole direction. The RF wave injection ...

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Abstract

The invention discloses a simulation method for electronic temperature evolution caused by EAST Tokamak radio frequency waves. When an electron temperature evolution process caused after radio frequency waves are injected into an EAST Tokamak device is numerically simulated, the form of a heating source is determined according to hardware parameters of a radio frequency system, and then evolution of disturbed electron temperature in a given magnetic field configuration is calculated according to an electron transport equation in a Tokamak configuration. And the plasma resistance is corrected according to the evolved electron temperature, the evolution of the magnetic field configuration is calculated by adopting the corrected resistance, the evolution of disturbed electron temperature is continuously calculated according to the magnetic field configuration and repeatedly calculated to achieve the simulation of long-time evolution. According to the method, the evolution of the electron temperature under the EAST Tokamak real three-dimensional magnetic field configuration caused by the simulation radio frequency wave is realized, the distribution condition of the disturbed electron temperature in the three-dimensional space at any moment is obtained, the defect of low experimental measurement time precision is overcome, the calculation efficiency is high, and the numerical stability is strong.

Description

technical field [0001] The invention relates to the numerical simulation of the discharge of a tokamak device in the field of magnetically confined controllable nuclear fusion, and in particular to a simulation method for the evolution of electron temperature caused by radio frequency waves in an EAST tokamak. Background technique [0002] The energy issue is a thorny issue faced by all mankind at present. At present, the energy used by people is mainly fossil fuel energy. Fossil fuels have limited energy reserves and produce a large amount of harmful gases during combustion, causing serious environmental pollution problems. To fundamentally solve the energy problem, the currently recognized method in the scientific community is controllable nuclear fusion. In order to realize controllable nuclear fusion, many schemes have been proposed, among which the most promising experimental device is the tokamak device in the magnetic confinement method. Chinese scientists are also...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28G06F30/10G06F17/13G06F113/08
CPCG06F30/28G06F30/10G06F17/13G06F2111/10G06F2113/08
Inventor 王正汹刘桐王丰
Owner DALIAN UNIV OF TECH
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