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二次涡与卡门涡形成过程
Authors
凌国灿
尹协远
Publication date
1 January 1982
Publisher
Abstract
本文用离散涡位流理论与边界层理论相结合的方法,同时考虑到边界层及后剪切层分离的离散涡模型,研究并计算了圆柱非定常运动过程中二次涡的发生、发展与影响。研究了对称主涡发生运动不稳定性的直接原因和条件,分析卡门涡的形成过程。本文提出,在二次涡的影响下对称主涡从有涡量补充的非自由涡变为没有涡量补充的自由涡,这是对称主涡发生运动不稳定性的条件,在小扰动影响下可诱发成卡门涡。 本文考虑不可压、大雷诺数、层流情况。所得结果与流场显示结果十分相似
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Institute Of Mechanics,Chinese Academy of Sciences
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Last time updated on 12/02/2018