Large-eddy simulation with parabolized stability equations for turbulent transition using OpenFOAM

2019 ◽  
Vol 189 ◽  
pp. 108-117 ◽  
Author(s):  
Minwoo Kim ◽  
Jiseop Lim ◽  
Seungtae Kim ◽  
Solkeun Jee ◽  
Jaeyoung Park ◽  
...  
Keyword(s):  
Large Eddy Simulation ◽  
Parabolized Stability Equations ◽  
Eddy Simulation ◽  
Turbulent Transition ◽  
Large Eddy

Constrained large-eddy simulation of laminar-turbulent transition in channel flow

2014 ◽  
Vol 26 (9) ◽  
pp. 095103 ◽  
Author(s):  
Yaomin Zhao ◽  
Zhenhua Xia ◽  
Yipeng Shi ◽  
Zuoli Xiao ◽  
Shiyi Chen
Keyword(s):  
Large Eddy Simulation ◽  
Channel Flow ◽  
Eddy Simulation ◽  
Turbulent Transition ◽  
Large Eddy ◽  
Laminar Turbulent Transition

scholarly journals Large-eddy simulation of laminar-turbulent transition in a swept-wing boundary layer

1997 ◽  
Author(s):  
Xiaoli Huai ◽  
Ugo Piomelli ◽  
Ronald Joslin ◽  
Xiaoli Huai ◽  
Ugo Piomelli ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Large Eddy Simulation ◽  
Swept Wing ◽  
Eddy Simulation ◽  
Turbulent Transition ◽  
Large Eddy ◽  
Laminar Turbulent Transition

Evaluation and application of advanced CFD models for rotating disc flows

2021 ◽  
pp. 095440622110138
Author(s):  
Feng Gao ◽  
John W Chew
Keyword(s):  
Large Eddy Simulation ◽  
Turbulence Models ◽  
Published Data ◽  
Complex Flows ◽  
Rotating Disc ◽  
Eddy Simulation ◽  
Cfd Models ◽  
Turbulent Transition ◽  
Large Eddy ◽  
Buoyancy Driven Convection

This paper addresses limitations of widely used Reynolds-averaged turbulence models (RANS) for prediction of gas turbine internal air systems. Results from direct numerical simulation (DNS), wall-resolved large-eddy simulation (LES), wall-modelled large-eddy simulation (WMLES), and RANS for benchmark test cases are compared. For rotor-stator disc cavity flows results for mean velocities, velocity fluctuations, rotor torque and laminar-turbulent transition are considered and compared with published data. For cavities between co-rotating discs attention is focused on buoyancy-driven convection in the centrifugal force field. It is concluded that WMLES is suitable for application in engine conditions, offering better accuracy than RANS in some critical applications. This confirms recently published results for turbine rim sealing and is further illustrated by application to convection in a sealed cavity at higher Rayleigh number than is practical with DNS or wall-resolved LES. The results show that the approximate near-wall treatment gives reasonable results for complex flows and extend previous studies to higher speed rig conditions where Eckert number effects become significant.

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