基于模型验证与确认方法的空爆自由场网格敏感性分析OACSTPCD
Analysis on Grid Sensitivity of Free Field of Air Explosion Based on Verification and Validation(V&V)Method
为能够在合理计算规模下准确模拟空爆自由场冲击波特征的网格划分方案,获得可靠的计算结果,本文运用验证与确认(verification and validation,V&V)方法,通过开展网格敏感性分析,确认了炸药空爆计算模型的数值解、外推估值、网格收敛指标与比例距离的定量关系,给出了满足不同网格收敛指标要求的最大比例网格尺寸随比例距离位置的变化关系.据此,在比例距离Z为0～40 m·kg 1/3范围内,给出了划分渐变网格的优化方案.针对1维…查看全部>>
To get a grid scheme which can accurately simulate the physical properties of the blast shockwave from a free-field air explosion for a reasonable numerical solution,this paper obtained the palpable results by conducting grid sensitivity analysis with the verification and validation method.The numerical solution,extrapolation estimate,and quantitative relationship between the mesh convergence index and the proportional distance of the calculation model of th…查看全部>>
陈博;仵可;张云峰;随亚光
西北核技术研究所,西安 710024西北核技术研究所,西安 710024||西安高新技术研究所,西安 710025西北核技术研究所,西安 710024西北核技术研究所,西安 710024
力学
V&V方法计算效率网格敏感性冲击波自由场
verification and validation methodcalculation efficiencygrid sensitivityshockwavefree field
《现代应用物理》 2024 (3)
148-157,10
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