CAJ | 학술논문

对海平面环境下当量为1 Mt TNT的强爆炸进行一维辐射流体力学数值计算，得到了较为完整的火球扩张过程数值模拟结果。数值给出了火球不同发展阶段物质参数和辐射参数的空间分布，该结果与实际强爆炸中一些经验公式的计算结果吻合较好。给出了火球阵面和辐射功率随时间的变化关系，较合理地解释了低空强爆炸火球二次极大现象。
대해평면배경하당량위1 Mt TNT적강폭작진행일유복사류체역학수치계산，득도료교위완정적화구확장과정수치모의결과。수치급출료화구불동발전계단물질삼수화복사삼수적공간분포，해결과여실제강폭작중일사경험공식적계산결과문합교호。급출료화구진면화복사공솔수시간적변화관계，교합리지해석료저공강폭작화구이차겁대현상。
A one‐dimensional radiation hydrodynamics numerical computation was pres‐ented for a strong explosion at sea level ,of which the equivalent is 1 Mt TNT .The spatial distributions of material and radiation parameters in strong explosion , w hich reflect a integrate process of fireball evolution ,were given in terms of the simulation . The calculation results agree well with those of some empirical formulas .The results of optical observables‐radiation power versus time and fireball radius versus time were de‐scribed ,and the second maximum phenomenon of the fireball at low altitude was given .