Method for constructing law model of plasma generated by propellant powder

Abstract

The invention discloses a method for constructing a law model of plasma generated by propellant powder, belonging to the field of plasma, the method comprises the following steps: S1, under the hypothesis of an inner trajectory and in a high-pressure state, a firing pin impacts the bottom of a hearth, primer is ignited, main charge is ignited through the primer, the main charge is combusted to generate high-temperature and high-pressure fuel gas, the fuel gas is used for doing work and pushing the projectile to move, and finally the projectile is launched out., S2, constant volume state analysis, S3, combustion process assumption, S4, plasma rule model construction and S5, model verification. The construction method disclosed by the invention is more scientific and reasonable; the physical process of propellant powder combustion is analyzed, the internal ballistic theory, the combustion theory, the plasma theory and the like are combined, a mathematical model of the plasma generation law of propellant powder under the high-pressure state is finally established, the result of numerical simulation is compared with the test result, and the correctness and feasibility of the model are determined.

Description

technical field [0001] The invention relates to the field of plasma, in particular to a method for constructing a regular model of plasma generated by a propellant. Background technique [0002] The research on the law of plasma generation under high pressure is a new field. The laboratory usually generates plasma by means of discharge, while the plasma generated under high pressure is combustion plasma, and its generation mechanism is thermal ionization, which is different from ordinary Discharge plasmas are not the same. To study the law of plasma generation under high pressure, temperature is an important factor. The traditional research on internal ballistics often only focuses on the change of gas pressure in the chamber and the change of the velocity of the projectile, and lacks the research on the temperature of the gas in the chamber. Contents of the invention [0003] The purpose of the present invention is to provide a method for constructing a regular model of ...

AI Technical Summary

Problems solved by technology

To study the law of plasma generation under high pressure, temperature is an important factor. Traditional research on internal ballistics often only focuses on changes in gas pressure in the chamber and changes in the velocity of projectiles, and lacks research on the temperature of gas in the chamber.

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