Alternative extrapolation-based symmetry boundary implementations for the axisymmetric lattice Boltzmann method

Physical Review. E
Liangqi ZhangJia Wei Chew

Abstract

In this study, alternative symmetry boundary implementations for the axisymmetric lattice Boltzmann (LB) method are proposed based on the nonequilibrium extrapolation and the direct extrapolation schemes. The proposed boundary schemes are directly implemented on the symmetry axis, and the postcollision distribution function and the macroscopic variables at the boundary nodes are extrapolated from the inner fluid nodes; thereby, the singularities arising at the symmetry axis (r=0) during the collision and the macroscopic variable calculations are completely avoided. The accuracy of the present schemes is consistent with the well-established axisymmetric LB model. Moreover, in comparison with previous symmetry boundary schemes, the present implementations are slightly more accurate than the symmetry scheme by Guo et al. [Phys. Rev. E 79, 046708 (2009)10.1103/PhysRevE.79.046708] and numerically more stable than the specular reflection-based schemes.

References

Jul 20, 2001·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·I HallidayA Stevens
May 15, 2002·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Zhaoli GuoBaochang Shi
Aug 11, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Kannan N Premnath, John Abraham
Mar 16, 2007·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Shiladitya Mukherjee, John Abraham
Aug 7, 2007·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·T Reis, T N Phillips
Mar 21, 2008·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·T Reis, T N Phillips
Oct 15, 2008·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Jian Guo Zhou
Jun 13, 2009·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Zhaoli GuoChuguang Zheng
Aug 8, 2009·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Haibo Huang, Xi-Yun Lu
Nov 13, 2009·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Q LiW Q Tao
Sep 28, 2010·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Q LiW Q Tao
Nov 9, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Jian Guo Zhou
Aug 16, 2013·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Sudhir SrivastavaFederico Toschi
Jan 24, 2015·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·H LiangT Zhang
Sep 15, 2016·Physical Review. E·Liangqi ZhangJia Wei Chew

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