A constant force function for the lattice Boltzmann equation in isotropic turbulence | ||
| Frontiers in Scientific Research and Technology | ||
| Article 6, Volume 2, Issue 1, 2021, Pages 38-41 PDF (398.36 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/fsrt.2021.64291.1036 | ||
| Author | ||
| Waleed Abdel Kareem* | ||
| Department of Mathematics Suez University, Suez, Egypt | ||
| Abstract | ||
| A constant force function for the lattice Boltzmann method is introduced and parts of the programming code are presented. Adding force to the lattice Boltzmann equation is a challenging issue because the nature of the forcing techniques and the nature of the lattice Boltzmann equation (LBE) itself. The LBE is a difference equation and it is coded in the physical space, however, the forcing is usually done in the Fourier space at low wave-numbers. This paper discusses the force function and its coding to be readable by the LBE without losing of any physical meaning of the engineering problem. A constant force function for the lattice Boltzmann method is introduced and parts of the programming code are presented. Adding force to the lattice Boltzmann equation is a challenging issue because the nature of the forcing techniques and the nature of the lattice Boltzmann equation (LBE) itself. The LBE is a difference equation and it is coded in the physical space, however, the forcing is usually done in the Fourier space at low wave-numbers. This paper discusses the force function and its coding to be readable by the LBE without losing of any physical meaning of the engineering problem. | ||
| Keywords | ||
| Lattice Boltzmann equation; forcing function; FORTRAN code | ||
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