Magnetic control powder combustion-type plasma flow calculation method

Abstract

The invention discloses a magnetic control powder combustion-type plasma flow calculation method, which belongs to the field of magnetic confinement plasma, and comprises step S1 of establishing a magnetohydrodynamic model, solving a fluid mechanics equation and an electromagnetic confinement system equation that control plasma motion through coupling, and researching an interaction law of a flowfield and an electromagnetic field in the plasma; step S2 of performing numerical calculation; and step S3 of verifying a calculation program, and analyzing and verifying the calculation program fromdifferent angles respectively. The calculation method of the invention is more scientific and reasonable. An adaptive magnetohydrodynamic model is established regarding the flow problem of the magnetic confinement powder combustion-type plasma. An induction magnetic field equation method is adopted to couple and solve an N-S equation group containing an electromagnetic source item and the electromagnetic confinement system equation. Meanwhile, a k-epsilon turbulence equation is modified electromagnetically. Further, on the basis of determining a boundary condition, the interaction law betweenthe flow field and the electromagnetic field and a turbulence structure in the plasma are predicted.

Description

technical field [0001] The invention relates to the field of magnetically confined gunpowder burning plasma, in particular to a calculation method for magnetically controlled gunpowder burning plasma flow. Background technique [0002] At present, there are mainly four theoretical methods to describe plasma flow: single particle orbital description method, description method, statistical description method and particle simulation method. The law is to obtain the particle distribution function by solving the kinetic equation. The particle simulation method needs to track the movement of each charged particle. At present, the performance of the computer is still difficult to meet the requirements. The MHD method focuses on the overall behavior of the plasma. The interaction between gas and magnetic field is studied, which can accurately describe the macroscopic quantities such as pressure, velocity, and density of the plasma flow field, and the calculation cost is relatively s...

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Problems solved by technology

[0002] At present, there are mainly four theoretical methods to describe plasma flow: single particle orbital description method, description method, statistical description method and particle simulation method. The law is to obtain the particle distribution function by solving the kinetic equation. The particle simulation method needs to track the movement of each charged particle. At present, the performance of the computer is still difficult to meet the requirements. The MHD method focuses on the overall behavior of the plasma. The interaction between gas and magnetic field is studied, which can accurately describe the macroscopic quantities such as pressure, velocity, and density of the plasma flow field, and the calculation cost is small

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