scholarly journals Numerical Study of Turbulent Structure over Strip Roughness in Open Channel Flow Using a Low Reynolds Number Turbulence Model……Akihiro TOMINAGA, Jian LIU and Masashi NAGAO

1997 ◽  
pp. 159-160
Author(s):  
Akio Mori ◽  
Akihiro Tominaga ◽  
Jian Liu ◽  
Masashi Nagao
Keyword(s):  
Reynolds Number ◽  
Channel Flow ◽  
Turbulence Model ◽  
Open Channel ◽  
Numerical Study ◽  
Low Reynolds Number ◽  
Open Channel Flow ◽  
Turbulent Structure ◽  
Low Reynolds

Low Reynolds Number Effect on Open Channel Flow Over a Rib

2014 ◽  
Author(s):  
Ebenezer E. Essel ◽  
Kathryn Atamanchuk ◽  
Samuel d’Auteuil ◽  
Mark F. Tachie
Keyword(s):  
Reynolds Number ◽  
Channel Flow ◽  
Open Channel ◽  
Low Reynolds Number ◽  
Open Channel Flow ◽  
Recirculation Region ◽  
Particle Image Velocimetry Technique ◽  
Mean Velocity ◽  
Freestream Velocity ◽  
Low Reynolds

An experimental study was conducted to investigate low Reynolds number effects on open channel flow over a transverse square rib. Particle image velocimetry technique was used to perform detailed velocity measurement in the upstream and recirculation region of a square rib of height, h = 12 mm. The Reynolds number based on the freestream velocity and rib height, Reh = 1510, 2650 and 3950 and the ratio of the boundary layer thickness to step height, δ/h = 2.5 ± 0.2. The results showed that the reattachment length of Reh = 2650 and 3950 increased by 5.7% compared with corresponding value of Reh = 1510. The mean velocities were independent of Reynolds number in the recirculation region but at the reattachment point, Reh = 3650 reduced the streamwise mean velocity and enhanced the wall-normal mean velocity in the region adjacent to the wall. The turbulent kinetic energy beyond the center of the recirculation region increased with increasing Reynolds number.

Numerical study of high-order Lagrangian structure functions in a turbulent channel flow with low Reynolds number

2010 ◽  
Vol 22 (S1) ◽  
pp. 215-218 ◽  
Author(s):  
Jian-ping Luo ◽  
Zhi-ming Lu ◽  
TatsLo Ushijima ◽  
Osami Kitoh ◽  
Xiang Qiu ◽  
...  
Keyword(s):  
Reynolds Number ◽  
Channel Flow ◽  
Numerical Study ◽  
Low Reynolds Number ◽  
Turbulent Channel Flow ◽  
Structure Functions ◽  
High Order ◽  
Low Reynolds

scholarly journals The Numerical Study of Turbulent Structure in Curved Open-Channel Flow.

1997 ◽  
pp. 11-21
Author(s):  
Hitoshi Sugiyama ◽  
Mitsunobu Akiyama ◽  
Masayuki Kamezawa
Keyword(s):  
Channel Flow ◽  
Open Channel ◽  
Numerical Study ◽  
Open Channel Flow ◽  
Turbulent Structure

scholarly journals The Numerical Study of Turbulent Structure in Compound Open-Channel Flow with Variable-Depth Flood Plain.

1997 ◽  
pp. 73-83
Author(s):  
Hitoshi Sugiyama ◽  
Mitsunobu Akiyama ◽  
Masayuki Kamezawa ◽  
Daisuke Noguchi
Keyword(s):  
Channel Flow ◽  
Open Channel ◽  
Numerical Study ◽  
Open Channel Flow ◽  
Flood Plain ◽  
Turbulent Structure ◽  
Variable Depth
Sign in / Sign up

Export Citation Format

Share Document