Study of identification of large-scale turbulence structures in drag-reducing turbulent boundary layer flow by means of stereoscopic PIV measurements

2019 ◽  
Vol 2019 (0) ◽  
pp. OS1-16
Author(s):  
Makoto HIRANO ◽  
Shinji TAMANO ◽  
Toru YAMADA ◽  
Youhei MORINISHI
Keyword(s):  
Boundary Layer ◽  
Turbulent Boundary Layer ◽  
Boundary Layer Flow ◽  
Large Scale ◽  
Piv Measurements ◽  
Stereoscopic Piv ◽  
Turbulence Structures ◽  
Turbulent Boundary Layer Flow ◽  
Layer Flow ◽  
Scale Turbulence

Turbulence Structures of Flow Over a Two-Dimensional Hill-Shaped Model

2003 ◽  
Author(s):  
Tetsuro Tamura ◽  
Shuyang Cao ◽  
Takako Shindou
Keyword(s):  
Boundary Layer ◽  
Turbulent Boundary Layer ◽  
Data Base ◽  
Boundary Layer Flow ◽  
Turbulent Shear ◽  
Two Dimensional ◽  
Hill Model ◽  
Turbulence Structures ◽  
Turbulent Boundary Layer Flow ◽  
Layer Flow

This study brings into focus the turbulent boundary layer flow over a two-dimensional hill with sinusoidally curved slope, which has both of convex and concave surfaces. In the regions over these two types of surfaces, it is well known that turbulence is deformed and much influenced due to velocity acceleration and deceleration. DNS has been applied to simulate the development, deformation and downstream recovery of the turbulent boundary layer flow. The momentum thickness Reynolds number of is equal to 973. Detailed information regarding streamwise changes of turbulence intensity, turbulent shear stress and kinetic energy, etc. are provided in data base manner. We hope to shed some lights on turbulence modeling for complex flows with the DNS data base of turbulence structures over the hill model.

Effect of Reynolds number on drag reduction in turbulent boundary layer flow over liquid–gas interface

2020 ◽  
Vol 32 (12) ◽  
pp. 122111
Author(s):  
Hongyuan Li ◽  
SongSong Ji ◽  
Xiangkui Tan ◽  
Zexiang Li ◽  
Yaolei Xiang ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Reynolds Number ◽  
Turbulent Boundary Layer ◽  
Drag Reduction ◽  
Boundary Layer Flow ◽  
Turbulent Boundary Layer Flow ◽  
Layer Flow
Sign in / Sign up

Export Citation Format

Share Document