Effects of wall function model in lattice Boltzmann method-based large-eddy simulation on built environment flows
作者： Hideki Kikumoto , Ryozo Ooka , Mengtao Han
DOI: 10.1016/J.BUILDENV.2021.107764
关键词:
摘要: Abstract Bounce-back boundary (BB), the popular wall in lattice Boltzmann method (LBM), corresponds to no-slip and does not provide an accurate shear drag on walls some cases. This study discusses a new boundary's effectiveness with function LBM-based large-eddy simulation (LBM-LES) predict indoor outdoor flows built environment. “Wall-function bounce” (WFB, using Spalding's law) is conducted compared BB. Two validation cases of convection 9 m × 3 m × 3 m room turbulent flow around single 1:1:2 building are employed. Results show that BB provided lower accuracy than law both cases, particularly when coarse grids. WFB compensated for this yielded more agreeable drag. overall similar half-length grids achieved grid independence coarser resolution. In case, improved accuracies time-averaged fluctuating velocities near-wall off-wall regions. LBM-LES obtained structures those finer-grid also velocity kinetic energy near roof ground. indicates (e.g., WFB) important environment because it can yield better utilizing reduce demands computation.
sci-hub.st 参考文章(47)
Louis A. Povinelli, J. L. Lumley, Mark G. Potapczuk, Nan-Suey Liu, Tsan-Hsing Shih, A Generalized Wall Function ,(1999)
F. Nicoud, F. Ducros, Subgrid-scale stress modelling based on the square of the velocity gradient tensor Flow Turbulence and Combustion. ,vol. 62, pp. 183- 200 ,(1999) , 10.1023/A:1009995426001
H. Werner, H. Wengle, Large-Eddy Simulation of Turbulent Flow Over and Around a Cube in a Plate Channel Eighth symposium on turbulent shear flows. pp. 155- 168 ,(1993) , 10.1007/978-3-642-77674-8_12
D. B. Spalding, A Single Formula for the “Law of the Wall” Journal of Applied Mechanics. ,vol. 28, pp. 455- 458 ,(1961) , 10.1115/1.3641728
B.E. Launder, D.B. Spalding, The numerical computation of turbulent flows Computer Methods in Applied Mechanics and Engineering. ,vol. 3, pp. 269- 289 ,(1990) , 10.1016/0045-7825(74)90029-2
R. Benzi, S. Succi, M. Vergassola, The lattice Boltzmann equation: theory and applications Physics Reports. ,vol. 222, pp. 145- 197 ,(1992) , 10.1016/0370-1573(92)90090-M
D. Lagrava, O. Malaspinas, J. Latt, B. Chopard, Advances in multi-domain lattice Boltzmann grid refinement Journal of Computational Physics. ,vol. 231, pp. 4808- 4822 ,(2012) , 10.1016/J.JCP.2012.03.015
Y. H Qian, D D'Humières, P Lallemand, Lattice BGK Models for Navier-Stokes Equation EPL. ,vol. 17, pp. 479- 484 ,(1992) , 10.1209/0295-5075/17/6/001
E. W. Adams, J. P. Johnston, Effects of the separating shear layer on the reattachment flow structure part 2: Reattachment length and wall shear stress Experiments in Fluids. ,vol. 6, pp. 493- 499 ,(1988) , 10.1007/BF00196511
Sergiu Klainerman, Andrew Majda, Compressible and incompressible fluids Communications on Pure and Applied Mathematics. ,vol. 35, pp. 629- 651 ,(1982) , 10.1002/CPA.3160350503