【摘要】 本文建立了密实炸药床跨音速两相反应流的二维非定常连续介质数学模型。将SIMPLE型的数值计算方法引入到密实炸药床燃烧转爆轰跨音速流动过程的数值计算中,其中对跨音速流动的处理和可压缩两相流压力校正方程的建立提出了改进方法。以无起爆药雷管作为算例。结果表明,本法较好地克服了跨音速两相流数值解中通常出现的数值振荡现象。更多还原

【Abstract】 The continuous medium mathematical modeling of two-dimensional unsteady transonic two-phase reactive flow of explosive particles in high-loading beds is investigated . The SIMPLE method is successfully utilized for two - dimensional numerical calculation of the Defagration -to -Degonation Transition (DDT ) processes in high-loading explosive beds . Special treatment for transonic flow and derivation of pressure correction equation for compressible fluid are presented . As an example , the calculated results for non-primary- explosive detonator show that this method weakens the numerical oscillation of transonic 2D-two-phase flow more effectively .更多还原