Abstract
A novel Omega (Ω) -driven dynamic partially-averaged Navier-Stokes (PANS) model is proposed in this paper. The ratio of the modeled-to-total turbulent kinetic energies fk is dynamically adjusted by the rigid vorticity ratio (the ratio of the rigid vorticity to the total vorticity), the key parameter of the Ω vortex identification method. Three classical flow cases with rotation and curvature are used to test the model. The results show that the turbulent viscosity is effectively adjusted by the new dynamic fk and the LES-like mode is activated, which can help the revelation of more turbulence information and improve the prediction accuracy. The new PANS model does not contain any explicit dependency on the grid size and enjoys good adaptability to the flow fields, and can be used for efficient engineering computations of the turbulent flows in the hydraulic machinery.
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Girimaji S. S., Srinivasan R., Jeong E. PANS turbulence model for seamless transition between RANS and LES: fixed-point analysis and preliminary results [C]. 4th ASME-JSME Joint Fluids Engineering Conference, Honolulu, Hawaii, USA, 2003.
Fröhlich J., Terzi D. V. Hybrid LES/RANS methods for the simulation of turbulent flows [J]. Progress in Aerospace Sciences, 2008, 44(5): 349–377.
Chaouat B. The state of the art of hybrid RANS/LES modeling for the simulation of turbulent flows [J]. Flow, Turbulence and Combustion, 2017, 99(2): 279–327.
Frendi A., Tosh A., Girimaji S. S. Flow past a backwardfacing step: Comparison of PANS, DES and URANS results with experiments [J]. International Journal for Computational Methods in Engineering Science and Mechanics, 2006, 8(1): 23–38.
Jeong E., Girimaji S. S. Partially averaged Navier-Stokes (PANS) method for turbulence simulations-flow past a square cylinder [J]. Journal of Fluids Engineering, 2010, 132(12): 121203.
Pereira F. S., Eça L., Vaz G. Investigating the effect of the closure in partially-averaged Navier-Stokes equations [J]. Journal of Fluids Engineering, 2019, 141(12): 121402.
Ji B., Luo X., Wu Y. et al. Partially-averaged Navier- Stokes method with modified k-? model for cavitating flow around a marine propeller in a non-uniform wake [J]. International Journal of Heat and Mass Transfer, 2012, 55(23-24): 6582–6588.
Liu H., Wang J., Wang Y. et al. Partially-averaged Navier- Stokes model for predicting cavitating flow in centrifugal pump [J]. Engineering Applications of Computational Fluid Mechanics, 2014, 8(2): 319–329.
Liu J. T., Wu Y. L., Wang L. Q. Instability analysis of a model pump-turbine with MGV based on nonlinear partially averaged Navier-Stokes methods [J]. Advances in Mechanical Engineering, 2015, 5: 710769.
Elmiligui A., Abdol-Hamid K. S., Massey S. J. et al. Numerical study of flow past a circular cylinder using RANS, hybrid RANS/LES and PANS formulations [C]. 22nd Applied Aerodynamics Conference and Exhibit, Providence, Rhode Island, USA, 2004.
Girimaji S. S., Abdol-Hamid K. S. Partially-averaged Navier-Stokes model for turbulence: implementation and validation [C]. 43rd AIAA Aerospace Sciences Meeting and Exhibit, Reno, Nevada, USA, 2005.
Foroutan H., Yavuzkurt S. A partially-averaged Navier- Stokes model for the simulation of turbulent swirling flow with vortex breakdown [J]. International Journal of Heat and Fluid Flow, 2014, 50: 402–416.
Schiestel R., Dejoan A. Towards a new partially integrated transport model for coarse grid and unsteady turbulent flow simulations [J]. Theoretical and Computational Fluid Dynamics, 2005, 18(6): 443–468.
Luo D. H., Yan C., Zheng W. L. et al. A new PANS model for unsteady separated flow simulations [J]. Applied Mechanics and Materials, 2014, 721: 182–186.
Wilcox D. C. Turbulence modeling for CFD [M]. La Canada Flintridge, California, USA: DCW Industries, 2006.
Baglietto E., Lenci G., Concu D. STRUCT: A secondgeneration URANS approach for effective design of advanced systems [C]. ASME 2017 Fluids Engineering Division Summer Meeting, Waikoloa, Hawaii, USA, 2017.
Liu Y. W., Yan H., Fang L. et al. Modified k-ω model using kinematic vorticity for corner separation in compressor cascades [J]. Science China Technological Sciences, 2016, 59(5): 795–806.
Liu C., Wang Y. Q., Yang Y. et al. New omega vortex identification method[J]. Science China Physics, Mechanics and Astronomy, 2016, 59(8): 684711.
Liu C., Gao Y. S., Dong X. R. et al. Third generation of vortex identification methods: Omega and Liutex/Rortex based systems [J]. Journal of Hydrodynamics, 2019, 31(2): 205–223.
Zhang Y. N., Qiu X., Chen F. P. et al. A selected review of vortex identification methods with applications [J]. Journal of Hydrodynamics, 2018, 30(5): 767–779.
Liu J. M., Wang Y. Q., Gao Y. S. et al. Galilean invariance of Omega vortex identification method [J]. Journal of Hydrodynamics, 2019, 31(2): 249–255.
Kolár V. Vortex identification: New requirements and limitations [J]. International Journal of Heat and Fluid Flow, 2007, 28(4): 638–652.
Spalart P. R., Shur M. On the sensitization of turbulence models to rotation and curvature [J]. Aerospace Science and Technology, 1997, 1(5): 297–302.
Belian A., Chkhetiani O., Golbraikh E. et al. Helical turbulence: Turbulent viscosity and instability of the second moments [J]. Physica A, 1998, 258: 55–68.
Mockett C., Fuchs M., Garbaruk A. et al. Two non-zonal approaches to accelerate RANS to LES transition of free shear layers in DES [J]. Progress in Hybrid RANS-LES Modelling, 2015, 130: 187–201.
Grossmann S., Lohse D., Sun C. High-Reynolds number Taylor-Couette turbulence [J]. Annual Review of Fluid Mechanics, 2016, 48: 53–80.
Dong S. Direct numerical simulation of turbulent Taylor- Couette flow [J]. Journal of Fluid Mechanics, 2007, 587: 373–393.
Bazilevs Y., Akkerman I. Large eddy simulation of turbulent Taylor-Couette flow using isogeometric analysis and the residual-based variational multiscale method [J]. Journal of Computational Physics, 2010, 229(9): 3402–3414.
Wang Y. Q., Gao Y. S., Liu J. M. et al. Explicit formula for the Liutex vector and physical meaning of vorticity based on the Liutex-Shear decomposition [J]. Journal of Hydrodynamics, 2019, 31(3): 464–474.
Liu C., Gao Y., Tian S. et al. Rortex-A new vortex vector definition and vorticity tensor and vector decompositions [J]. Physics of Fluids, 2018, 30(3): 035103.
Gao Y., Liu C. Rortex and comparison with eigenvaluebased vortex identification criteria [J]. Physics of Fluids, 2018, 30(8): 085107.
Guo S. H. Partially-averaged Navier-Stokes (PANS) approach for study of rotating turbulence [D]. Beijing, China: China Agricultural University, 2018(in Chinese).
Javadi A., Nilsson H. LES and DES of strongly swirling turbulent flow through a suddenly expanding circular pipe [J]. Computers and Fluids, 2015, 107: 301–313.
Dellenback P. A., Metzger D. E., Neitzel G. P. Measurements in turbulent swirling flow through an abrupt axisymmetric expansion [J]. AIAA Journal, 1988, 26(6): 669–681.
Byskov R. K., Jacobsen C. B., Pedersen N. Flow in a centrifugal pump impeller at design and off-design donditions-part I: Particle image velocimetry (PIV) and laser doppler velocimetry (LDV) measurements [J]. Journal of Fluids Engineering, 2003, 125(1): 61–72.
Byskov R. K., Jacobsen C. B., Pedersen N. Flow in a centrifugal pump impeller at design and off-design donditions-part II: large eddy simulations [J]. Journal of Fluids Engineering, 2003, 125(1): 73–83.
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Project supported by the National Natural Science Foundation of China (Grant Nos. 51836010, 51779258 and 51839001), the National Key Research and Development Program of China (Grant No. 2018YFB0606103) and the Nature Science Foundation of Beijing (Grnat No. 3182018).
Biography: Chao-yue Wang (1993-), Male, Ph. D. Candidate
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Wang, Cy., Wang, Fj., Wang, Bh. et al. A novel Omega-driven dynamic PANS model. J Hydrodyn 32, 710–716 (2020). https://doi.org/10.1007/s42241-020-0052-y
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DOI: https://doi.org/10.1007/s42241-020-0052-y