年間 6 号発行
ISSN 印刷: 1543-1649
ISSN オンライン: 1940-4352
Indexed in
Hybrid Simulations of Two-Way Coupled Turbulent Magnetohydrodynamic Flows
要約
We have applied a hybrid approach that combines the transient Reynolds-averaged Navier-Stokes (T-RANS) method for velocity and hydrodynamical turbulence with a direct numerical solving (DNS) of the magnetic induction equation for two-way coupled turbulent magnetohydrodynamic (MHD) flows. An originally developed electromagnetically extended two-equations (k-) eddy-viscosity-based model was used for the hydrodynamical turbulence closure. The validation of the hybrid approach was performed by simulating the Riga-dynamo experimental setup, which is characterized by an intermediate value of the magnetic Reynolds number (Rem 20) and a very high value of the hydrodynamical Reynolds number (Re 3.5 106). Numerical simulations provided all general features of the magnetic saturation regime with the frequency and amplitude of the generated magnetic field in good agreement with available experiments.
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Gailitis, A., Lielausis, O., and Platacis, E., Magnetic Field Saturation in the Riga Dynamo Experiment. DOI: 10.1103/PhysRevLett.86.3024
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Kenjereš, S., Hanjalić, K., Renaudier, S., Stefani, F., Gerbeth, G., and Gailitis, A., Coupled Fluid-Flow and Magnetic-Field Simulation of the Riga Dynamo Experiment. DOI: 10.1063/1.2404930
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Kenjereš, S., and Hanjalić, K., Numerical Simulation of a Turbulent Magnetic Dynamo. DOI: 10.1103/PhysRevLett.98.104501
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Kenjereš, S., and Hanjalić, K., Numerical Insights into Magnetic Dynamo Action in a Turbulent Regime. DOI: 10.1088/1367-2630/9/8/306
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Kenjereš, S., Hanjalić, K., and Bal, D., A Direct-Numerical-Simulations Based Second-Moment Closure for Turbulent Magnetohydrodynamic Flows. DOI: 10.1063/1.1649335
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Kenjereš, S., Hanjalić, K., On the Implementation of Effects of Lorentz Force in Turbulence Closure Models. DOI: 10.1016/S0142-727X(00)00017-5
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Hanjalić, K., Kenjereš, S., Reorganization of Turbulence Structure in Magnetic Rayleigh- Benard Convection: A T-RANS Study. DOI: 10.1088/1468-5248/1/1/008
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Hanjalić, K., Kenjereš, S., T-RANS Simulation of Deterministic Eddy Structure in Flows Driven by Thermal Buoyancy and Lorentz Force. DOI: 10.1023/A:1013570705813
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Kenjereš, S., Hanjalić, K., Transient Analysis of Rayleigh-Benard Convection with a RANS Model. DOI: 10.1016/S0142-727X(99)00007-7
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Kenjereš, S., Hanjalić, K., Invited Review: Tackling Complex Turbulent Flows with Transient RANS. DOI: 10.1088/0169-5983/41/1/012201
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Gailitis, A., Lielausis, O., and Platacis, E., Colloquium: Laboratory Experiments on Hydromagnetic Dynamos. DOI: 10.1103/RevModPhys.74.973
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Gailitis, A., Lielausis, O., and Platacis, E., Riga Dynamo Experiment and its Theoretical Background. DOI: 10.1063/1.1666361
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Gailitis, A., Gerbeth, G., and Gundrum, T., History and Results of the Riga Dynamo Experiments. DOI: 10.1016/j.crhy.2008.07.004
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Kenjereš, S., Electromagnetic Enhancements of Turbulent Heat Transfer. DOI: 10.1615/ICHMT.2009.TurbulHeatMassTransf.310
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Kenjereš, S., Numerical Analysis of Blood Flow in Realistic Arteries Subjected to Strong Non-Uniform Magnetic Fields. DOI: 10.1016/j.ijheatfluidflow.2008.02.014
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Rhie, C. M., and Chow,W. L., Numerical Study of the Turbulent Flow Past an Airfoil with Trailing Edge Separation. DOI: 10.2514/3.8284
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Lien, F. S., and Leschziner, M. A., Upstream Monotonic Interpolation for Scalar Transport with Application to Complex Turbulent Flows. DOI: 10.1002/fld.1650190606
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Kenjereš S., ten Cate S., Voesenek C.J., Vortical structures and turbulent bursts behind magnetic obstacles in transitional flow regimes, International Journal of Heat and Fluid Flow, 32, 3, 2011. Crossref
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Kenjereš Saša, Energy spectra and turbulence generation in the wake of magnetic obstacles, Physics of Fluids, 24, 11, 2012. Crossref
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Kenjereš Saša, Heat transfer enhancement induced by wall inclination in turbulent thermal convection, Physical Review E, 92, 5, 2015. Crossref
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Kenjeres S, On Electromagnetic Modulation of Flow Instabilities, Mixing and Heat Transfer in Conducting and Magnetized Fluids, Journal of Physics: Conference Series, 745, 2016. Crossref
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Kenjereš Saša, On modeling and eddy-resolving simulations of flow, turbulence, mixing and heat transfer of electrically conducting and magnetizing fluids: A review, International Journal of Heat and Fluid Flow, 73, 2018. Crossref