The Simulation Of Propellant With Plasma Ignition Considering The Effect Of Non-Fourier

There are many excellences in plasma ignition for Electrothermal-Chemical Gun (ETCG)when compared with the normal ignition. In order to improve the ETC launch technique, itis necessary to study the propellant with plasma ignition thoroughly. The investigation ofthis thesis is to find out the temperature distribution of propellant in ETCG with plasmaignition. Firstly, at the surroundings of fearfully high or low temperature, Non-Fourier heattransfer whose heat transmission speed is a finite value is introduced, and analyticalsolutions of hyperbolic heat conduction model for a one-dimension sphere has beendiscussed, it is realized that whether the Non-Fourier heat transfer be considered isdetermined by the relaxation time, size, thermal conductivity of the particle and thermaleffect time. Then, the Non-Fourier conduction heat transfer model which attention to thecharacteristics of ETCG is developed, which base on the characteristic of solid grains withplasma conduction and conventional ignition theory and some plasma ignition modelsestablished by scholars before. The one-dimension sphere and two-dimension cylinderplasma ignition model of propellant are established which are different from theconventional ignition models. The govern equation of this new model is hyperbolic partialdifferential equation of Non-Fourier heat conduction. Lastly, the numerical simulation ofthe model is used to rich the analysis under the suitable simple. The result show that: theignition delay will be shortened while the energy of plasma increase; the two-dimensioncylinder model with consideration of radial and axis temperature change is more feasibilitywhen compared with the one-dimension sphere model with consideration of radialtemperature changes; the comparisons of the results of classical Fourier heat conductionand Non-Fourier heat conduction model with considering of normal propellant and thepropellant with protective films respectively, show that it is more feasibility to consideringNon-Fourier heat conduction, and it agree with the practical situation better.