摘要
针对爆轰流体力学过程的控制方程和辅助方程,剖析模型参数、模型形式和数值方法等的不确定因素,列举爆轰流体力学模型的不确定性因素并开展敏感度分析。针对几个重要参数,发展高维参数抽样技术,结合爆轰产物JWL状态方程的圆筒试验,开展自主研发的爆轰弹塑性流体动力学LAD2D仿真软件的可信度评估研究,给出可信度评估结果。此方法和研究思路为复杂工程仿真软件可信度评估提供一种有效手段。
% As to the control equations and auxiliary equations of detonation fluid dynamics,the uncertain factors,such as the model parameters, the model form, and numerical methods, are analyzed, theuncertainty factors of detonation fluid dynamics model are listed, and their sensitivities are analyzed.Focusing on several important parameters,the high dimension parameter sampling method is developed.The reliability evaluation of tlie LAD2D software for tlie simulation of detonation fluid dynamics is carriedout by combing witli the JWL equation of state in the cylinder test. The reliability egiven finally. The method and research idea provides a very effective technology for evaluating thecredibility of complex engineering simulation software.
出处
《计算机辅助工程》
2017年第6期1-8,共8页
Computer Aided Engineering
基金
国家自然科学基金(11372051
91630312
11475029)
国防基础科研计划(C1520110002)
中国工程物理研究院科学基金(2015B0202045)
关键词
爆轰过程
唯象模型
数值模拟
不确定性量化
敏感度分析
高维抽样
detonation process
phenomenological model
numerical simulationquantification
sensitivity analysis
high dimension sampling
