Abstract
Two advanced DES (detached eddy simulation) methods, delayed-DES (DDES) and improved-delayed DES (IDDES), are the two wide-used RANS-LES (Reynolds averaged Navier-Stokes and large eddy simulation) hybrid methods. They are applied to accurately simulate the unsteady complex turbulent flows at high Reynolds numbers with a wide Mach number range from low speed to hypersonic. In addition, the dissipation properties of the spatial scheme are also discussed and the adaptive dissipation scheme performs well. After comparing the performance of DDES and IDDES, IDDES is recommended for the following simulations: massive separation flows past tandem cylinders and rudimentary landing gear at low speed, cavity flow at transonic, supersonic and hypersonic conditions. The pressure fluctuations and dynamic loads are accurately captured near the wall.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Menter FR (1994) Two-equation eddy-viscosity turbulence models for engineering applications. AIAA J. 32(8):1598–1605
Menter FR, Kuntz M (2003) A zonal SST-DES formulation. DES-WORKSHOP, St. Petersburg, July 2003. (http://cfd.me.umist.ac.uk/flomania/index2.html)
Shur M, Spalart PR, Strelets M, Travin A (2008) A hybrid RANS/LES approach with delayed DES and wall-modelled LES capabilities. Int J Heat Fluid Flow 29:1638–1649
Spalart PR, Jou WH, Strelets M et al (1997) Comments on the feasibility of LES for wings, and on a hybrid RANS/LES approach. In: Liu c, Liu Z (eds) First AFOSR international conference on DNS/LES, LA Ruston. Advanced in DNS/LES, Greyden Press, Columbus, OH
Spalart PR, Deck S, Shur M et al (2006) A new version of detached eddy simulation, Resistant to Ambiguous Grid Densities. Theor Comp Fluid Dyn 20:181–195
Xiao ZX, Liu J, Huang JB, Fu S (2012) Numerical dissipation effects on the massive separation around tandem cylinders. AIAA J 55(5):1119–1136
Xiao ZX, Liu J, Luo KY, Huang JB, Fu S (2013) Numerical investigation of massively separated flows past rudimentary landing gear using advanced DES approaches. AIAA J 51:107–125
Xiao LH, Xiao ZX, Duan ZW, Fu S (2015) Improved-delayed-detached-eddy simulation of cavity-induced transition in hypersonic boundary layer. Int J Heat Fluid Flow 51:138–150
Acknowledgments
This work was supported by National Science Foundation of China (Grant No. 11372159) and National Key Basic Research Program of China (Grant No. 2014CB744801). Tsinghua National Laboratory for Information Science and Technology helped for the computational resources.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Xiao, Z., Fu, S. (2016). Simulations of Complex Turbulent Flows with RANS-LES Hybrid Approaches. In: Zhou, Y., Lucey, A., Liu, Y., Huang, L. (eds) Fluid-Structure-Sound Interactions and Control. Lecture Notes in Mechanical Engineering. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-48868-3_44
Download citation
DOI: https://doi.org/10.1007/978-3-662-48868-3_44
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-662-48866-9
Online ISBN: 978-3-662-48868-3
eBook Packages: EngineeringEngineering (R0)