上海交通大学学报 ›› 2021, Vol. 55 ›› Issue (8): 942-948.doi: 10.16183/j.cnki.jsjtu.2020.221
所属专题: 《上海交通大学学报》2021年12期专题汇总专辑; 《上海交通大学学报》2021年“工程力学”专题
收稿日期:
2020-07-16
出版日期:
2021-08-28
发布日期:
2021-08-31
通讯作者:
易仕和
E-mail:nudtdynamic@163.com
作者简介:
金 龙(1996-),男,浙江省金华市人,硕士生,主要从事实验流体力学研究
基金资助:
JIN Long, YI Shihe(), HUO Junjie, LIU Xiaolin, NIU Haibo
Received:
2020-07-16
Online:
2021-08-28
Published:
2021-08-31
Contact:
YI Shihe
E-mail:nudtdynamic@163.com
摘要:
采用纳米粒子示踪的平面激光散射(NPLS)技术研究了马赫数为3.0条件下,不同高度和不同数量的圆柱型粗糙元诱导的边界层转捩过程.获得了超声速流动中圆柱型粗糙元诱导的边界层的流向和展向精细流场结构.观察到了粗糙元尾迹边界层的发展过程,再附后的边界层将在一定范围内保持稳定.同时,在边界层发展过程中观测到了清晰的发卡涡结构.利用分形理论对边界层NPLS图像进行定量分析,获得了几种情况下边界层转捩的位置.研究结果表明,多个粗糙元间的相互作用能够抑制边界层的转捩以及尾迹中发卡涡的演化.然而,当两侧粗糙元高于中间的粗糙元时,粗糙元间的相互影响对于尾迹边界层发展的抑制作用反而不明显.
中图分类号:
金龙, 易仕和, 霍俊杰, 刘小林, 牛海波. 圆柱型粗糙元诱导的超声速边界层转捩实验研究[J]. 上海交通大学学报, 2021, 55(8): 942-948.
JIN Long, YI Shihe, HUO Junjie, LIU Xiaolin, NIU Haibo. Experimental Study of Supersonic Boundary Layer Transition Induced by Cylindrical Roughness Elements[J]. Journal of Shanghai Jiao Tong University, 2021, 55(8): 942-948.
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