强爆炸光辐射脉冲辐照特征与爆炸当量的相关性
发布时间：2018-12-08 21:34
【摘要】：为定量分析强爆炸光辐射辐照特征及其与爆炸当量的关系,建立了用于描述光辐射输运过程的辐射流体力学模型。在算子分裂方法运用的基础上,采用温度梯度作为指示子进行并行区域的动态划分,从而实现较高效率的并行求解。在此基础上数值计算了千吨~兆吨当量下强爆炸光辐射的发展过程,分析表明:光辐射强度随时间呈现"双脉冲"变化,强度极小和强度第2极大时刻与当量的某次方成正比。光辐射总功率变化历程与光辐射强度变化历程相似,但受辐射源半径随当量变化的影响,其极值时刻会出现差异。
[Abstract]:In order to quantitatively analyze the radiation characteristics of intense explosion radiation and its relationship with the explosion equivalent, a radiative hydrodynamic model was established to describe the transport process of light radiation. Based on the application of the operator splitting method, the temperature gradient is used as the indicator for the dynamic partition of the parallel region, so that the efficient parallel solution can be realized. On the basis of this, the development process of strong explosion light radiation at kiloton-megalton equivalent is numerically calculated. The analysis shows that the intensity of light radiation varies with time, and the intensity is minimal and the second maximum moment of intensity is proportional to the power of equivalent. The variation history of the total power of light radiation is similar to that of the intensity of light radiation, but the extreme time will be different due to the influence of the radius of the radiation source with the change of the equivalent.
【作者单位】： 北京理工大学材料学院;西北核技术研究所;
【基金】：国家自然科学基金项目(91330205)
【分类号】：O38
，
本文编号：2369029
[Abstract]:In order to quantitatively analyze the radiation characteristics of intense explosion radiation and its relationship with the explosion equivalent, a radiative hydrodynamic model was established to describe the transport process of light radiation. Based on the application of the operator splitting method, the temperature gradient is used as the indicator for the dynamic partition of the parallel region, so that the efficient parallel solution can be realized. On the basis of this, the development process of strong explosion light radiation at kiloton-megalton equivalent is numerically calculated. The analysis shows that the intensity of light radiation varies with time, and the intensity is minimal and the second maximum moment of intensity is proportional to the power of equivalent. The variation history of the total power of light radiation is similar to that of the intensity of light radiation, but the extreme time will be different due to the influence of the radius of the radiation source with the change of the equivalent.
【作者单位】： 北京理工大学材料学院;西北核技术研究所;
【基金】：国家自然科学基金项目(91330205)
【分类号】：O38
，
本文编号：2369029
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