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Experimental and numerical study of flow structures of the second-mode instability 预览

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摘要 Flow structures of a Mach 6 transitional boundary layer over a 260 mm long flared cone are investigated by the particle image velocimetry(PIV).Particle images near the curved wall are initially transformed into surface-fitted orthogonal coordinates and spliced with their 180°-symmetric images to satisfy a no-slip condition at the wall.The results are then reversely transformed to the physical domain.Direct numerical simulation(DNS)is also performed to validate the experimental results.The experimental and numerical results are in agreement,indicating a strong dilatation process within the second-mode instability.
作者 Yiding ZHU
出处 《应用数学和力学:英文版》 SCIE EI CSCD 2019年第2期273-282,共10页 Applied Mathematics and Mechanics(English Edition)
基金 the National Natural Science Foundation of China(Nos.11602005,10921202,and 11632002).
作者简介 Corresponding author:Yiding ZHU,E-mail:zhuyiding@pku.edu.cn.
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