Multidisciplinary applications of detached-eddy simulation to separated flows at high Reynolds numbers (challenge 92)

2004 ◽  
Author(s):  
S.A. Morton ◽  
D. Kholodar ◽  
T. Billingsley ◽  
J.R. Forsythe ◽  
K.E. Wurtzler ◽  
...  
Keyword(s):  
Reynolds Numbers ◽  
Separated Flows ◽  
Detached Eddy Simulation ◽  
Eddy Simulation ◽  
High Reynolds Numbers ◽  
High Reynolds

scholarly journals Multidisciplinary applications of detached-eddy simulation to separated flows at high Reynolds numbers

2004 ◽  
Author(s):  
S.A. Morton ◽  
M. Steenman ◽  
R.M. Cummings ◽  
J.R. Forsythe ◽  
K.E. Wurtzler ◽  
...  
Keyword(s):  
Reynolds Numbers ◽  
Separated Flows ◽  
Detached Eddy Simulation ◽  
Eddy Simulation ◽  
High Reynolds Numbers ◽  
High Reynolds

Three-dimensional numerical simulation of flow around combined pier based on detached eddy simulation at high Reynolds numbers

2017 ◽  
Vol 35 (1) ◽  
pp. 91-96 ◽  
Author(s):  
Weizheng Cui ◽  
Xiantang Zhang ◽  
Zexi Li ◽  
Hui Li ◽  
Yan Liu
Keyword(s):  
Numerical Simulation ◽  
Three Dimensional ◽  
Reynolds Numbers ◽  
Detached Eddy Simulation ◽  
Eddy Simulation ◽  
High Reynolds Numbers ◽  
High Reynolds

scholarly journals DNS/LES Simulations of Separated Flows at High Reynolds Numbers

2015 ◽  
Author(s):  
Ponnampalam Balakumar ◽  
George Ilhwan Park
Keyword(s):  
Reynolds Numbers ◽  
Separated Flows ◽  
High Reynolds Numbers ◽  
High Reynolds

Detached-Eddy Simulations and Reynolds-Averaged Navier-Stokes Simulations of Delta Wing Vortical Flowfields

2002 ◽  
Vol 124 (4) ◽  
pp. 924-932 ◽  
Author(s):  
Scott Morton ◽  
James Forsythe ◽  
Anthony Mitchell ◽  
David Hajek
Keyword(s):  
Vortex Breakdown ◽  
Delta Wing ◽  
Turbulence Models ◽  
Reynolds Numbers ◽  
Navier Stokes ◽  
Detached Eddy Simulation ◽  
Fighter Aircraft ◽  
Eddy Simulation ◽  
Reynolds Averaged Navier Stokes ◽  
High Reynolds

An understanding of vortical structures and vortex breakdown is essential for the development of highly maneuverable vehicles and high angle of attack flight. This is primarily due to the physical limits these phenomena impose on aircraft and missiles at extreme flight conditions. Demands for more maneuverable air vehicles have pushed the limits of current CFD methods in the high Reynolds number regime. Simulation methods must be able to accurately describe the unsteady, vortical flowfields associated with fighter aircraft at Reynolds numbers more representative of full-scale vehicles. It is the goal of this paper to demonstrate the ability of detached-eddy Simulation (DES), a hybrid Reynolds-averaged Navier-Stokes (RANS)/large-eddy Simulation (LES) method, to accurately predict vortex breakdown at Reynolds numbers above 1×106. Detailed experiments performed at Onera are used to compare simulations utilizing both RANS and DES turbulence models.

A hybrid two-layer URANS–LES approach for large eddy simulation at high Reynolds numbers

2005 ◽  
Vol 26 (2) ◽  
pp. 173-190 ◽  
Author(s):  
L. Temmerman ◽  
M. Hadžiabdić ◽  
M.A. Leschziner ◽  
K. Hanjalić
Keyword(s):  
Large Eddy Simulation ◽  
Reynolds Numbers ◽  
Eddy Simulation ◽  
High Reynolds Numbers ◽  
Large Eddy ◽  
High Reynolds

On cavity flow at high Reynolds numbers

1977 ◽  
Vol 79 (2) ◽  
pp. 391-414 ◽  
Author(s):  
M. Nallasamy ◽  
K. Krishna Prasad
Keyword(s):  
Reynolds Numbers ◽  
Separated Flows ◽  
Navier Stokes ◽  
Thermal Fields ◽  
High Reynolds Numbers ◽  
Wide Range ◽  
High Reynolds ◽  
Energy Equations ◽  
First Time ◽  
Finite Difference Techniques

The flow in a square cavity is studied by solving the full Navier–Stokes and energy equations numerically, employing finite-difference techniques. Solutions are obtained over a wide range of Reynolds numbers from 0 to 50000. The solutions show that only at very high Reynolds numbers (Re[ges ] 30000) does the flow in the cavity completely correspond to that assumed by Batchelor's model for separated flows. The flow and thermal fields at such high Reynolds numbers clearly exhibit a boundary-layer character. For the first time, it is demonstrated that the downstream secondary eddy grows and decays in a manner similar to the upstream one. The upstream and downstream secondary eddies remain completely viscous throughout the range of Reynolds numbers of their existence. It is suggested that the behaviour of the secondary eddies may be characteristic of internal separated flows.

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