Density calculation method of plasmas in gun barrel in gunpowder combustion process

A plasma, computing method technology, applied in computing, design optimization/simulation, special data processing applications, etc., to achieve the effect of increasing density
CN106202797AInactive Publication Date: 2016-12-07ACADEMY OF ARMORED FORCES ENG PLA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ACADEMY OF ARMORED FORCES ENG PLA
Publication Date
2016-12-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a density calculation method of plasmas in a gun barrel in a gunpowder combustion process. The density calculation method comprises the following steps: step 1, obtaining gun bore structure parameters and explosive filling parameters; step 2, establishing a gunpowder combustion equation set; step 3, solving the gunpowder combustion equation set; obtaining functions of p, l and phi relative to t by taking the t as an independent variable; step 4, calculating a gas temperature T: T=Sp(l+lphi) / omegaphiR, wherein R is a gas constant; and step 5, calculating a plasma density ne: ne=no / ni*(2mnokT)<1.5> / h<3>*2gi / g0exp(-eEi / kT), wherein Ei is an ionization potential of ions, go is a statistical weight of an atomic ground state, gi is a statistical weight of an ion ground state, me is the mass of electrons, ni is the ion density and no is the atom density. The density calculation method of the plasmas in the gun barrel in the gunpowder combustion process, disclosed by the invention, can accurately calculate the density of the plasmas in the gun barrel, and provides theoretical supports for the density of the plasmas in the gun barrel.
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Description

technical field

[0001] The invention relates to the technical field of plasma characteristic testing, in particular to a method for calculating plasma density in a gun barrel when gunpowder burns. Background technique

[0002] The methods of plasma generation mainly include gas discharge method, ray irradiation method, photoionization method, laser plasma method, thermal ionization method, shock plasma and so on. Gas discharge includes corona discharge, glow discharge, arc discharge, dielectric barrier discharge, etc. There are many researches in this field. Thermal ionization refers to the ionization produced by inelastic collisions between atoms and other particles during thermal motion to obtain sufficient energy. There is little research in this area, only studies on the combustion of fossil fuels to generate plasma. The application of plasma in artillery is now limited to electrothermal chemical guns. The plasma in the electrothermal chemical gun is generated by a pl...

Claims

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