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不可压缩流体三维Rayleigh-Taylor不稳定性的大涡模拟 被引量:1

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摘要 对不可压缩流体三维Rayleigh-Taylor不稳定性问题建立被动标量输运模型,用大涡模拟方法计算了正弦初始扰动和随机初始扰动下不稳定性发展各个阶段的瞬时速度场和标量场,以及混合过程中计算尺度和亚格子尺度上的平均湍流脉动能、平均剪切应力和被动标量通量;分析了界面形状、被动标量浓度分布的演化规律及气泡、尖钉速度和混合层宽度随时间的变化规律,计算结果与其他数值模拟和实验结果相吻合,验证了大涡模拟方法应用于该问题的可行性.
出处 《中国科学(A辑)》 CSCD 北大核心 2002年第2期158-169,共12页 Science in China(Series A)
基金 科学技术部"九五"攀登项目 国家自然科学基金(批准号:1017032) 博士后科学基金及王宽诚博士后奖励基金资助项目 计算物理实验室基金试点项目
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同被引文献5

  • 1Soshi K,Kozo F.Computational study of a supersonic base flow using LES/RANS hybrid methodology[C]// 42nd AIAA Aerospace Sciences Meeting and Exhibit,Reno,Nevada,2004. 被引量:1
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