0213 Study on sustaining mechanism of large scale streamwise vortical structure in turbulent plane Couette flow

2009 ◽  
Vol 2009 (0) ◽  
pp. 117-118
Author(s):  
Hiroshi KOIKE ◽  
Osami KITOH ◽  
Tatsuo USHIJIMA
Keyword(s):  
Couette Flow ◽  
Large Scale ◽  
Vortical Structure ◽  
Plane Couette Flow ◽  
Turbulent Plane

206 Study on the large-scale streak structure in turbulent plane Couette flow

2010 ◽  
Vol 2010.59 (0) ◽  
pp. 83-84
Author(s):  
Kazuo KATAYAMA ◽  
Osami KITOH ◽  
Tatsuo USHIJIMA
Keyword(s):  
Couette Flow ◽  
Large Scale ◽  
Plane Couette Flow ◽  
Turbulent Plane

scholarly journals Turbulent plane Couette flow at moderately high Reynolds number

2014 ◽  
Vol 751 ◽  
Author(s):  
V. Avsarkisov ◽  
S. Hoyas ◽  
M. Oberlack ◽  
J. P. García-Galache
Keyword(s):  
Reynolds Number ◽  
Couette Flow ◽  
Large Scale ◽  
Reynolds Numbers ◽  
Wall Layer ◽  
Wall Region ◽  
Plane Couette Flow ◽  
Turbulent Plane ◽  
High Reynolds ◽  
Near Wall

AbstractA new set of numerical simulations of turbulent plane Couette flow in a large box of dimension ($\def \xmlpi #1{}\def \mathsfbi #1{\boldsymbol {\mathsf {#1}}}\let \le =\leqslant \let \leq =\leqslant \let \ge =\geqslant \let \geq =\geqslant \def \Pr {\mathit {Pr}}\def \Fr {\mathit {Fr}}\def \Rey {\mathit {Re}}20\pi h,\, 2h,\, 6\pi h$) at Reynolds number $(\mathit{Re}_{\tau }) =125$, 180, 250 and 550 is described and compared with simulations at lower Reynolds numbers, Poiseuille flows and experiments. The simulations present a logarithmic near-wall layer and are used to verify and revise previously known results. It is confirmed that the fluctuation intensities in the streamwise and spanwise directions do not scale well in wall units. The scaling failure occurs both near to and away from the wall. On the contrary, the wall-normal intensity scales in inner units in the near-wall region and in outer units in the core region. The spectral ridge found by Hoyas & Jiménez (Phys. Fluids, vol. 18, 2003, 011702) for the turbulent Poiseuille flow can also be seen in the present flow. Away from the wall, very large-scale motions are found spanning through all the length of the channel. The statistics of these simulations can be downloaded from the webpage of the Chair of Fluid Dynamics.

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