Skip to main content

Detached Eddy Simulation of Complex Separation Flows Over a Modern Fighter Model at High Angle of Attack

  • Yang Zhang (a1) (a2), Laiping Zhang (a1) (a3), Xin He (a1) (a3), Xiaogang Deng (a4) and Haisheng Sun (a1) (a2)...

This paper presents the simulation of complex separation flows over a modern fighter model at high angle of attack by using an unstructured/hybrid grid based Detached Eddy Simulation (DES) solver with an adaptive dissipation second-order hybrid scheme. Simulation results, including the complex vortex structures, as well as vortex breakdown phenomenon and the overall aerodynamic performance, are analyzed and compared with experimental data and unsteady Reynolds-Averaged Navier-Stokes (URANS) results, which indicates that with the DES solver, clearer vortical flow structures are captured and more accurate aerodynamic coefficients are obtained. The unsteady properties of DES flow field are investigated in detail by correlation coefficient analysis, power spectral density (PSD) analysis and proper orthogonal decomposition (POD) analysis, which indicates that the spiral motion of the primary vortex on the leeward side of the aircraft model is highly nonlinear and dominates the flow field. Through the comparisons of flow topology and pressure distributions with URANS results, the reason why higher and more accurate lift can be obtained by DES is discussed. Overall, these results show the potential capability of present DES solver in industrial applications.

Corresponding author
*Corresponding author. Email addresses: Zhang), P. Zhang), He), G. Deng), S. Sun)
Hide All
[1] Spalart P. R., Strategies for turbulence modelling and simulations, Int. J. Heat Fluid Flow, 21 (2000), 252263.
[2] Spalart P. R. and Allmaras S. R., A one-equation turbulence model for aerodynamic flows, AIAA paper 92-0439, 1992.
[3] Jiang Z., Xiao Z. L. and Shi Y. P. et al., Constrained large-eddy simulation of wall-bounded compressible turbulent flows, Phys. Fluids, 25(106102) (2013), 128.
[4] Li H. and Zhang S. H., Direct numerical simulation of decaying compressible isotropic turbulence, Chinese J. Theoret. Appl. Mech., 44(4) (2012), 673686.
[5] Fröhlich J., von Terzi D., Hybrid LES/RANS methods for the simulation of turbulent flows, Process Aerospace Sci., 44 (2008), 349377.
[6] Spalart P. R., Jou W. H. and Strelets M. et al., Comments on the feasibility of LES for wings and on a hybrid RANS/LES approach, Proceedings of 1st AFOSR International Conference on DNS/LES, Greyden Press, Columbus, 1997.
[7] Strelets M., Detached eddy simulation of massively separated flows, AIAA paper 2001-0879, 2001.
[8] Mittal R. and Moin P., Suitability of upwind-biased finite difference schemes for large-eddy simulation of turbulent flows, AIAA J., 35(8) (1997), 14151417.
[9] Bui T. T., A parallel, finite-volume algorithm for large-eddy simulation of turbulent flow, Comput. Fluids, 29(8) (2000), 877915.
[10] Travin A., Shur M. and Strelets M. et al., Physical and numerical upgrades in the detachededdy simulation of complex turbulent flows, Advances in LES of Complex Flows, Springer-Verlag, Berlin, Heidelberg, 2004.
[11] Xiao L. H., Xiao Z. X. and Duan Z. W. et al., Improved-Delayed-Detached-Eddy simulation of cavity-Induced transition in hypersonic boundary layer, Proceedings of The Eighth International Conference on Computational Fluid Dynamics, ICCFD8-2014-0247, pp. 1055–1073, Chengdu, China, 2014.
[12] Deng X. B., Zhao X.H. and Yang W. et al., Dynamic adaptive upwindmethod and its applications in RANS/LES hybrid simulations, Proceedings of The Eighth International Conference on Computational Fluid dynamics, ICCFD8-2014-0164, pp. 807–814, Chengdu, China, 2014.
[13] Baker T. J., Mesh generation: Art or Science?, Progress Aerospace Sci., 41(1) (2005), 2963.
[14] Li Z. Z., Yu X. J. and Zhu J. et al., A Runge Kutta discontinuous Galerkin method for Lagrangian compressible Euler equations in two-dimensions, Commun. Comput. Phys., 15(4) (2014), 11841206.
[15] Zhang L. P., Liu W. and He L. X. et al., A class of hybrid DG/FV methods for conservation laws I: Basic formulation and one-dimensional systems, J. Comput. Phys., 231(4) (2012), 10811103.
[16] Zhang L. P., Liu W. and He L. X. et al., A class of hybrid DG/FV methods for conservation laws II: Two-dimensional cases, J. Comput. Phys., 231(4) (2012), 11041120.
[17] Zhang L. P., Liu W. and He L. X. et al., A class of hybrid DG/FV methods for conservation laws III: Two-dimensional Euler equations, Commun. Comput. Phys., 12(1) (2012), 284314.
[18] Wang Z. J., Spectral (finite) volume method for conservation laws on unstructured grids I: basic formulation, J. Comput. Phys., 178(2) (2002), 210251.
[19] Wang Z. J. and Liu Y., The spectral differencemethod for the 2D Euler equations on unstructured grids, AIAA paper 2005-5112, 2005.
[20] Huynh H. T., A reconstruction approach to high-order schemes including discontinuous Galerkin for diffusion, AIAA paper 2009-403, 2009.
[21] Zhang Y., Zhang L. P., He X. and Deng X. G., Detached eddy simulation based on unstructured and hybrid grid, Chinese Journal of Aeronautics, 36(9) (2015), 29002910.
[22] Zhang Y., Zhang L. P., He X. and Deng X. G., An improved second-order finite-volume algorithm for detached-eddy simulation based on hybrid grids, Commun. Comput. Phys., 20(2) (2016), 459485.
[23] Menter F., Zonal two-equation k-ω turbulence models for aerodynamic flows, AIAA paper 93-2906, 1993.
[24] Gritskevich M. S., Garbaruk A. V. and Schütze J. et al., Development of DDES and IDDES formulations for the k-ω shear stress transport model, Flow Turbul. Combust., 88(3) (2012), 431449.
[25] Sozer E., Brehm C. and Kiris C. C., Gradient calculation methods on arbitrary polyhedral unstructured meshes for cell-centered CFD solvers, AIAA paper 2014-1440, 2014.
[26] Roe P. L., Approximate Riemann solvers, parameter vectors, and difference schemes, J. Comput. Phys., 43 (1981), 357372.
[27] Zhang L. P. and Wang Z. J., Ablock LU-SGS implicit dual time-stepping algorithmfor hybrid dynamic meshes, Comput. Fluids, 33(7) (2004), 891916.
[28] He X., Zhang L. P. and Zhao Z. et al., Research and development of structured/unstructured hybrid CFD software, Transactions of Nanjing University of Aeronautics & Astronautics, 30(S) (2013), 116120.
[29] He X., Zhang L. P. and Zhao Z. et al., Validation of HyperFLOW in subsonic and transonic flow, Acta Aerodynamica Sinica, 34(2) (2016), 267275.
[30] Liu J., Sun H. S., Huang Y., Jiang Y. and Xiao Z. X., Numerical investigation of an advanced aircraft model during pitching motion at high incidence, Sci. China Tech. Sci., 59(2) (2016), 276288.
[31] Payne F. M., Ng T. T. and Nelson R. C., Visualization and flow surveys of the leading edge vortex structure on delta wing platforms, AIAA paper 86-0330, 1986.
[32] Meyer K. E., Pedersen J. M., and Özcan O., A turbulent jet in crossflow analysed with proper orthogonal decomposition, J. Fluid Mech., 583 (2007), 199227.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Communications in Computational Physics
  • ISSN: 1815-2406
  • EISSN: 1991-7120
  • URL: /core/journals/communications-in-computational-physics
Please enter your name
Please enter a valid email address
Who would you like to send this to? *



Full text views

Total number of HTML views: 0
Total number of PDF views: 13 *
Loading metrics...

Abstract views

Total abstract views: 57 *
Loading metrics...

* Views captured on Cambridge Core between 31st October 2017 - 21st November 2017. This data will be updated every 24 hours.