| 不同当量强爆炸早期火球现象的数值模拟 |
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| 引用本文： | 田宙,乔登江,郭永辉.不同当量强爆炸早期火球现象的数值模拟[J].爆炸与冲击,2009,29(4):408-412. |
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| 作者姓名： | 田宙 乔登江 郭永辉 |
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| 作者单位： | 西北核技术研究所,陕西,西安,710024;西北核技术研究所,陕西,西安,710024;西北核技术研究所,陕西,西安,710024 |
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| 摘 要： | 采用一维球对称辐射流体力学方程组，研究了不同当量强爆炸早期火球阵面、冲击波的形成发展过程，对计算结果进行了相似律分析。结果表明，随爆炸当量增加，火球阵面、冲击波扩张速度加快，火球扩张过渡阶段开始结束位置及持续范围增加，火球中心温度下降变慢；在火球阵面以冲击波扩张传播以后，火球阵面参量满足立方根相似律。
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| 关 键 词： | 爆炸力学 火球 辐射流体力学 强爆炸 |
Numerical simulation on early fireball phenomenology of strong explosions for different yields |
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| TIAN Zhou,QIAO Deng-jiang,GUO Yong-hui.Numerical simulation on early fireball phenomenology of strong explosions for different yields[J].Explosion and Shock Waves,2009,29(4):408-412. |
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| Authors: | TIAN Zhou QIAO Deng-jiang GUO Yong-hui |
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| Affiliation: | 1.Northwest Institute of Nuclear Technology, Xi’an 710024, Shaanxi, China |
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| Abstract: | The equations for one-dimensional radiation hydrodynamics in spherical symmetry were applied to the early fireball phenomenology of strong explosions with different yields.Evolutions of radiation fronts and case shocks for these early fireballs were investigated numerically and analyzed by using the scaling theory.With the increase of explosion yield,the extension velocities of radiation front and case shocks increase,the beginning and ending position and sustaining area of transition of radiation front inc... |
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| Keywords: | mechanics of explosion fireball radiation hydrodynamics strong explosion |
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