- **Main CFD Forum**
(*http://www.cfd-online.com/Forums/main/*)

- - **lattice Boltzmann (again)
**
(*http://www.cfd-online.com/Forums/main/2507-lattice-boltzmann-again.html*)

lattice Boltzmann (again)
Hi,
Can someone tell me how to relate the physical variables (real world variables) to the non-dimensional variables in the lattice Boltzmann equations (such as, viscosties, domain length, ime, density, velocities, surface tension,...)? Thanks! For transient problem, is there a constraint on delta t? (delta t is 1 in LBE, right?) Pei-Ying Hsieh |

Re: lattice Boltzmann (again)
Hi, you could read
Naoki Takada, Michihisa Tsutahara Evolution of viscous flow around a suddenly rotating circular cylinder in the lattice boltzmann method Computers & Fluids vol 27 no 7 pp807-828 (1998) you have to scale the viscosity (related to the relaxation parameter) with the time step and the space increment. |

All times are GMT -4. The time now is 16:07. |