Simulation method for controlling novel classic tearing mode through resonance magnetic disturbance in tokamak

A technology of tokamak and simulation method, which is applied in the simulation of the new classical tearing mode controlled by resonance magnetic disturbance, and the numerical simulation of the discharge of the tokamak device, which can solve the problems of long period, high cost, economic loss, etc., and achieve numerical simulation Good stability, avoiding numerical instability, and high computational efficiency

Active Publication Date: 2019-09-13
DALIAN UNIV OF TECH
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AI Technical Summary

Benefits of technology

This technology allows for simulations that mimic how external disturbances affect certain types of tears called necrosis or rupture modes without making them difficult to see through during experimentations. By applying this technique overcomes problems associated with conventional methods like direct addition of magnetism into boundaries, but it also enables researchers to study more complex phenomena involving these layers. Additionally, there are various techniques available for analyzing spectra obtained from quantum mechanics (QM) calculations, allowing us to make precise comparisons between different materials. Overall, this new approach makes studying neonate tear dynamics easier than previous approaches while maintaining accuracy and reliability.

Problems solved by technology

This patents discusses how it's difficult for some materials like coal or oil to hold together properly when they come into contact during fusion reactions between two objects made from different types of material. These difficulties may lead to damaging effects over time if used without proper care. Additionally, there needs to develop techniques to prevent this type of interaction happening too frequently while still maintain good performance.

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  • Simulation method for controlling novel classic tearing mode through resonance magnetic disturbance in tokamak
  • Simulation method for controlling novel classic tearing mode through resonance magnetic disturbance in tokamak
  • Simulation method for controlling novel classic tearing mode through resonance magnetic disturbance in tokamak

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Embodiment Construction

[0047] The specific implementation manner of the present invention will be further described below in conjunction with the accompanying drawings and technical solutions.

[0048] The tokamak device is a device that confines hot plasma in a ring-shaped container to react through a strong magnetic field. Its structure is as follows: figure 1 As shown, the external structure is the external resonant magnetic disturbance coil. First, a three-dimensional coordinate system (r, θ, z) is established according to the real device configuration, where r, θ and z are the radial, polar and axial coordinates respectively, and a three-dimensional calculation grid is constructed, such as figure 2 shown. The initial balanced magnetic surface in a tokamak is a nested circle or a circle with a certain deformation. The neoclassical tearing mode will tear the magnetic surface to form a magnetic island structure, such as image 3shown. Then, according to the data of alternating current passing ...

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Abstract

The invention belongs to numerical simulation of discharge of a Tokamak device in the field of magnetic confinement controlled nuclear fusion, and relates to a simulation method for controlling a newclassic tearing mode through resonance magnetic disturbance in Tokamak. According to the current data in the Tokamak upper coil assembly, the Biot-Savart law is used for solving an induced magnetic field; integrating is performed to obtain an expression of a polar magnetic flux corresponding to the induced magnetic field according to approximation of a large ring diameter ratio; a Fourier transform pseudo-spectrum method is utilized to transform magnetic flux into components of different moduli to obtain three-dimensional distribution of the components in a tokamak median form, the three-dimensional distribution is coupled into a magnetofluid equation, and the Crank-Nicosolson method is utilized to solve the evolution of the magnetic field with the resonance magnetic disturbance along with time, so that the influence of the magnetic field on the new classical tearing mode is studied. The method can simulate the physical processes of new classic mode locking, inhibition, field penetration and the like of the tearing mode, is high in calculation efficiency and relatively good in numerical stability, and is an efficient numerical method capable of accurately simulating an experiment.

Description

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Claims

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Application Information

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Owner DALIAN UNIV OF TECH
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