Analysis of inflow conditions on the flow past a wall-mounted square cylinder with OpenFOAM. (English) Zbl 07832226
Summary: In this study, the flow mechanisms around wall-mounted structures was numerically investigated using Large Eddy Simulation (LES). A comparison was made between the uniform and non-uniform inflow condition to explore the impact of the inflow turbulence on the flow physics, the dynamic response and the hydrodynamic performance of the flow past the cylinder. Sparsity Promoting Dynamic Model Decomposition (SPDMD) was applied to select the dominant modes in the downstream flow field, and to further investigate the evolution of the temporal-spatial scales, as well as the mutual interaction among the wake, the cylinder and the boundary layer. The present study revealed a strong interference between the velocity fluctuations and the wake past the cylinder, in which leads to rapid energy transfer from large eddies to small eddies. Strong convection effects were also observed in the far wake region, where significant interference occurs during the energy transfer induced by fluctuating velocities and the coherent vortex structures. The model analysis successfully identifies the prominent modes of the wake dynamic characteristics under different inflow conditions. This study expands our understanding on the wakes past wall-mounted structures, particularly in terms of their evolution and instability mechanisms, and provides valuable insights for the design and optimization of future wall-mounted structures in engineering practice.
MSC:
| 76-XX | Fluid mechanics |
Keywords:
wall-mounted structure; large eddy simulation; SPDMD; inflow condition; wake dynamics characteristicsSoftware:
OpenFOAMReferences:
| [1] | Schanderl, W.; Jenssen, U.; Strobl, C.; Manhart, M., The structure and budget of turbulent kinetic energy in front of a wall-mounted cylinder. J Fluid Mech, 285-321 (2017) · Zbl 1460.76487 |
| [2] | Ikhennicheu, M.; Germain, G.; Druault, P.; Gaurier, B., Experimental study of coherent flow structures past a wall-mounted square cylinder. Ocean Eng, 137-146 (2019) |
| [3] | Li, J.; Qiu, X.; Shao, Y.; Liu, H.; Fu, Y.; Tao, Y.; Liu, Y., Turbulent coherent structures in channel flow with a wall-mounted hemisphere. AIP Adv, 3 (2022) |
| [4] | Li, S.; Long, Y.; Wang, J., Turbulent/non-turbulent interface for laminar boundary flow over a wall-mounted fence. Phys Fluids, 12 (2022) |
| [5] | Ren, X.; Su, H.; Yu, H. H.; Yan, Z., Wall-modeled large eddy simulation and detached eddy simulation of wall-mounted separated flow via OpenFOAM. Aerosp, 12, 759 (2022) |
| [6] | Cao, Y.; Tamura, T., Large-eddy simulation study of Reynolds number effects on the flow around a wall-mounted hemisphere in a boundary layer. Phys Fluids, 2 (2020) |
| [7] | Jang, H. K.; Ozdemir, C. E.; Liang, J. H.; Tyagi, M., Oscillatory flow around a vertical wall-mounted cylinder: dynamic mode decomposition. Phys Fluids, 2 (2021) |
| [8] | Behera, S.; Saha, A. K., Effect of inlet shear on turbulent flow past a wall-mounted finite-size square cylinder. Ocean Eng (2021) |
| [9] | Sohankar, A.; Bahmani, A. R.; Rastan, M. R., An LES study of the wake flow dynamics and heat transfer characteristics of two side-by-side finite wall-mounted square cylinders. Ocean Eng (2022) |
| [10] | Saha, A. K., Unsteady flow past a finite square cylinder mounted on a wall at low Reynolds number. Comput Fluids, 599-615 (2013) · Zbl 1391.76491 |
| [11] | Yin, G.; Andersen, M.; Ong, M. C., Numerical simulations of flow around two tandem wall-mounted structures at high Reynolds numbers. Appl Ocean Res (2020) |
| [12] | Hammad, A.; Younis, M. Y.; Akram, N.; Uddin, E.; Javed, A., Simulation study on flow behavior around a wall-mounted finite height square cylinder with corner chamfer. J Wind Eng Ind Aerodyn (2022) |
| [13] | Rastan, M. R.; Sohankar, A.; Moreau, D. J.; Doolan, C. J.; Awasthi, M., Modulation of aerodynamic characteristics of a finite wall-mounted square cylinder through steady jet injection. Exp Therm Fluid Sci (2020) |
| [14] | Wang, F.; Lam, K. M., Experimental and numerical investigation of turbulent wake flow around wall-mounted square cylinder of aspect ratio 2. Exp Therm Fluid Sci (2021) |
| [15] | Bourgeois, J. A.; Sattari, P.; Martinuzzi, R. J., Coherent vortical and straining structures in the finite wall-mounted square cylinder wake. Int J Heat Fluid Flow, 130-140 (2012) |
| [16] | Mercier, P.; Ikhennicheu, M.; Guillou, S.; Germain, G.; Poizot, E.; Grondeau, M.; Druault, P., The merging of Kelvin-Helmholtz vortices into large coherent flow structures in a high Reynolds number flow past a wall-mounted square cylinder. Ocean Eng (2020) |
| [17] | Sun, C.; Wang, L., Modal analysis of propeller wake dynamics under different inflow conditions. Phys Fluids, 12 (2022) |
| [18] | Wang, L.; Luo, W.; Li, M., Numerical investigation of a propeller operating under different inflow conditions. Phys Fluids, 10 (2022) |
| [19] | Wang, L.; Wu, T.; Gong, J.; Yang, Y., Numerical simulation of the wake instabilities of a propeller. Phys Fluids, 12 (2021) |
| [20] | Jasak, H., OpenFOAM: open source CFD in research and industry. Int J Naval Architect Ocean Eng, 2, 89-94 (2009) |
| [21] | Jasak, H.; Jemcov, A.; Tukovic, Z., OpenFOAM: a C++ library for complex physics simulations, 1-20 |
| [22] | Piomelli, U.; Chasnov, J. R., Large-eddy simulations: theory and applications, 269-336 |
| [23] | Piomelli, U.; Balaras, E., Wall-layer models for large-eddy simulations. Annu Rev Fluid Mech, 1, 349-374 (2002) · Zbl 1006.76041 |
| [24] | Chow, F. K.; Moin, P., A further study of numerical errors in large-eddy simulations. J Comput Phys, 2, 366-380 (2003) · Zbl 1047.76034 |
| [25] | Ducros, F.; Nicoud, F.; Poinsot, T., Wall-adapting local eddy-viscosity models for simulations in complex geometries. Numer Methods Fluid Dyn VI, 293-299 (1998) |
| [26] | Spinelli, G. G.; Horstmann, T.; Masilamani, K.; Soni, M. M.; Klimach, H.; Stück, A.; Roller, S., HPC performance study of different collision models using the Lattice Boltzmann solver Musubi. Comput Fluids (2023) · Zbl 1521.76700 |
| [27] | Sharafabadi, V. M.; Fathali, M., Comparison of effects of four subgrid-scale turbulence models in large eddy simulation of a large wind farm. J Mech Sci Technol, 1-11 (2023) |
| [28] | Wang, L.; Liu, X.; Wang, N.; Li, M., Propeller wake instabilities under turbulent-inflow conditions. Phys Fluids, 8 (2022) |
| [29] | Muscari, R.; Di Mascio, A.; Verzicco, R., Modeling of vortex dynamics in the wake of a marine propeller. Comput Fluids, 65-79 (2013) · Zbl 1365.76094 |
| [30] | Wang, L.; Guo, C.; Xu, P.; Su, Y., Analysis of the wake dynamics of a propeller operating before a rudder. Ocean Eng (2019) |
| [31] | Yin, G.; Ong, M. C., Numerical analysis on flow around a wall-mounted square structure using Dynamic Mode Decomposition. Ocean Eng (2021) |
| [32] | Chandrsuda, C.; Bradshaw, P., Turbulence structure of a reattaching mixing layer. J Fluid Mech, 171-194 (1981) |
| [33] | Hunt, J. C.; Wray, A. A.; Moin, P., Eddies, streams, and convergence zones in turbulent flows. Studying turbulence using numerical simulation databases, 2 |
| [34] | Wang, L. Z.; Guo, C. Y.; Su, Y. M.; Wu, T. C., A numerical study on the correlation between the evolution of propeller trailing vortex wake and skew of propellers. Int J Naval Architect Ocean Eng, 2, 212-224 (2018) |
| [35] | Wang, L.; Guo, C.; Su, Y.; Xu, P.; Wu, T., Numerical analysis of a propeller during heave motion in cavitating flow. Appl Ocean Res, 131-145 (2017) |
| [36] | Nekkanti, A.; Schmidt, O. T., Modal analysis of acoustic directivity in turbulent jets. AIAA J, 1, 228-239 (2021) |
| [37] | Wang, L.; Liu, X.; Wang, N.; Li, M., Modal analysis of propeller wakes under different loading conditions. Phys Fluids, 6 (2022) |
| [38] | Wang, L.; Liu, X.; Wu, T., Modal analysis of the propeller wake under the heavy loading condition. Phys Fluids, 5 (2022) |
| [39] | Nyquist, H., Certain topics in telegraph transmission theory. Trans Am Inst Electr Eng, 2, 617-644 (1928) |
| [40] | Shannon, C. E., Communication in the presence of noise. Proc IRE, 1, 10-21 (1949) |
| [41] | Jovanović, M. R.; Schmid, P. J.; Nichols, J. W., Sparsity-promoting dynamic mode decomposition. Phys Fluids, 2 (2014) |
| [42] | Wang, L.; Liu, X.; Guo, J.; Li, M.; Liao, J., The dynamic characteristics in the wake systems of a propeller operating under different loading conditions. Ocean Eng (2023) |
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