Abstract
The objective of the current study is towards comparative assessment of the performance of hybrid RANS/LES turbulence models in predicting flow over a 6:1 prolate spheroid. Two hybrid RANS/LES turbulence models formulated in seamless framework are assessed for their predictive capabilities in performing aerodynamic analysis of the prolate spheroid geometry at relatively low angles of attack. The turbulence models of interest in this study are the Partially-Averaged Navier Stokes (PANS) of Girimaji and Scale-Adaptive Simulations (SAS) method of Menter. PANS and SAS model computations of flow over the prolate spheroid geometry are performed at incidence angles of \(10^{\circ }\) and \(20^{\circ }\) to match the experimental flow conditions of Kreplin, and Chesnakas and Simpson, respectively. Distribution of the surface quantities at various sections are reported. The agreement between the computations and the experimental data improve for the higher incidence angle.
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References
Alin, N., Berglund, M., Fureby, C.: A VLES approach applied to flows around underwater vehicle hulls, vol. AIAA 00–0543, AIAA, Jan 2000
Tsai, C.Y., Whitney, A.K.: Numerical study of three-dimensional flow separation for a 6:1 ellipsoid, vol. AIAA 99–0172, AIAA, Jan 1999
Omari, K.E., Schall, E., Koobus, B., Dervieux, A.: Turbulence Modeling Challenges in Airship CFD Studies. Monografias del Seminario Matematico Garcia de Galdeano 31, 545–554 (2004)
Kreplin, H.P.: Three dimensional boundary layer and flow field data of an inclined prolate spheroid. In: A Selection of Experimental Test Cases for the Validation of CFD Codes, vol. AR 303 of AGARD Advisory Report. AGARD Neuilly-Sur-Seine, pp. 96–97 (1994)
Chesnakas, C.J., Simpson, R.L.: Detailed investigation of the three-dimensional separation about a 6:1 prolate spheroid. AIAA J. 35(6), 990–999 (1997)
Wetzel, T.G., Simpson, R.L., Chesnakas, C.J.: Measurement of three-dimensional crossflow separation. AIAA J. 36(4), 557–564 (1998)
Hedin, P.O., Berglund, M., Alin, N., Fureby, C.: Large Eddy simulation of the flow around an inclined prolate spheroid, vol. AIAA 2001–1035, AIAA, Jan 2001
Fureby, C., Alin, N., Wikstrom, N., Menon, S., Svanstedt, N., Persson, L.: Large-Eddy simulation of high-Reynolds-number wall-bounded flows. AIAA J. 42(3), 457–468 (2004)
Constantinescu, G.S., Pasinato, H., Wang, Y.Q., Forsythe, J.R., Squires, K.D.: Numerical investigation of flow past a prolate spheroid. J. Fluids Eng. 124(4), 904–910 (2002)
Xiao, Z., Zhang, Y., Huang, J., Chen, H., Fu, S.: Prediction of separation flows around a 6:1 prolate spheroid using RANS/LES Hybrid approaches. ACTA MECHANICA SINICA 23(4), 369–382 (2007)
Girimaji, S.S.: Partially-averaged Navier-Stokes model for turbulence: a Reynolds-averaged Navier-Stokes to direct numerical simulation bridging method. J. Appl. Mech. 73(3), 413–421 (2006)
Menter, F., Egorov, Y.: The scale-adaptive simulation method for unsteady turbulent flow predictions. Part 1: theory and model description. Flow Turb Combust 85, 113–138 (2010)
Schwamborn, D., Gerhold, T., Heinrich, R.: The DLR TAU code: recent applications in research and industry. In: Proceedings of the European Conference on Computational Fluid Dynamics, The Netherlands, ECCOMAS CFD 2006, pp. 1–25
Lakshmipathy, S., Togiti, V.: Assessment of alternative formulations for the specific-dissipation rate in RANS and variable-resolution turbulence models, vol. AIAA 2011–3978, AIAA, June 2011
Murthi, A., Reyes, D.A., Girimaji, S.S., Basara, B.: Turbulence transport modeling for PANS and other bridging closure approaches. In: V European Conference on Computational Fluid Dynamics, Portugal, ECCOMAS CFD 2010, pp. 1–20
Lakshmipathy, S., Girimaji, S.S.: Partially averaged Navier-Stokes (pans) method for turbulence simulations: flow past a circular cylinder. J. Fluids Eng. 132(12), 121202 (2010)
Ma, J., Peng, S.H., Davidson, L., Wang, F.: A low Reynolds Number variant of partially-averaged Navier Stokes model for turbulence. Int. J. Heat Fluid Flow 32(3), 652–669 (2011)
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Lakshmipathy, S. (2014). Evaluation of Hybrid RANS/LES Methods for Computing Flow over a Prolate Spheroid. In: Dillmann, A., Heller, G., Krämer, E., Kreplin, HP., Nitsche, W., Rist, U. (eds) New Results in Numerical and Experimental Fluid Mechanics IX. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 124. Springer, Cham. https://doi.org/10.1007/978-3-319-03158-3_48
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DOI: https://doi.org/10.1007/978-3-319-03158-3_48
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