Effect of surface roughness element on near wall turbulence with zero-pressure gradient

• Published in: Science China. Physics, mechanics & astronomy Vol. 58; no. 6; pp. 95 - 102
• Main Authors: Zhang, Xin, Pan, Chong, Shen, JunQi, Wang, JinJun
• Format: Journal Article
• Language: English
• Published: Beijing Science China Press 01.06.2015; Springer Nature B.V
• Subjects: Astronomy; Boundary layers; Classical and Continuum Physics; Fluid dynamics; Fluid flow; Kinematics; Low speed; Observations and Techniques; Physics; Physics and Astronomy; Probability distribution; Regularization; Roughness; Statistical analysis; Streak; Surface roughness; Surface roughness effects; Turbulence; Turbulent boundary layer; Turbulent flow; Walls; 元素; 压力梯度; 条纹间距; 湍流边界层; 脉动强度; 表面粗糙度; 运动效果; 近壁湍流; 064702; turbulent coherent structures; low-speed streak; flow control

In the present paper, we present an investigation on the effect of roughness elements onto near-wall kinematics of a zero- pressure-gradient turbulent boundary layer. An array of spanwisely-aligned cylindrical roughness elements was attached to the wall surface to regulate the near-wall low-speed st...