Particle simulating method for high-density large-dimension plasma

Abstract

A particle simulating method for high-density large-dimension plasma comprises the steps of firstly establishing a particle simulating initial model of electric propulsion thruster plasma, and selecting a proper zooming factor; respectively aiming at a no-collision particle motion process and a plasma particle collision process, deriving a physical quantity change relation which is related in a scaling before-and-after model, and obtaining a physical quantity in the scaling model; executing a particle simulating method, and performing calculation for obtaining plasma flow distribution and a related method in the scaling model; and finally, performing reverse derivation according to the method of the invention for obtaining a related result of the original-state plasma flow characteristic.The particle simulating method can realize particle simulation of the high-density large-dimension plasma and furthermore has advantages of effectively reducing total calculation amount, reducing timein reaching balance in simulation, and improving operation efficiency of the plasma particle simulating method.

Description

technical field [0001] The invention belongs to the technical field of numerical simulation of plasma, and relates to a plasma particle simulation method, in particular, a particle simulation method for high-density, large-size plasma. Background technique [0002] The particle simulation method uses a computer to track the motion of a large number of individual particles, which is one of the important methods for simulating plasma motion. Because this simulation method is based on the movement of a large number of real particles in the plasma rather than treating the plasma as a continuous fluid medium, its accuracy is much higher than other methods, and it can reflect the microscopic characteristics of the plasma. The plasma is described precisely in a kinetic manner. Relying on its advantages in plasma simulation, the particle simulation method is widely used in research fields such as celestial jets, magnetosphere physics, thermonuclear fusion, and electric propulsion. ...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problem that the existing technology cannot efficiently and accurately perform particle simulation on the high-density and large-scale discharge plasma in the electric propulsion thruster, the present invention provides a particle simulation method for high-density and large-scale plasma

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