无约束云雾产生爆炸场的数值模拟

NumericaI Simulation of Nast Generated bv Unconfined Volume Cloud Explosion.

无约束云雾爆炸具有两个特点：（１）有限的能量释放速率；（２）与爆源的能量密度Ｑ＿ｆ有关。该文在欧拉坐标系下，以能量波模型，选用了近年计算冲击波较好的ＴＶＤ格式，对无约束云雾爆炸场进行了数值模拟，计算过程中，对Ｌｕｃｋｒｉｔｚ的能量波模型进行了改进。该文选用的能量波模型具有简单、物理含义清楚且能反映无约束云雾爆炸的特点。

Unconfined volume cloud explosion is relative to energy density and time dependent energy release. Energy wave addition and TVD scheme were chosen to simulate the blast generated by unconfined volume cloud explosion in Euler system. The energy wave model of heat release used in this paper is simple and has reasonable physical interpretation. It can also response the characterization of nonideal explosion.