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| Lattice Boltzmann Metoden× | Reynolds-Averaged Navier-Stokes× | |
|---|---|---|
| Fagområde | Fluiddynamik | Fluiddynamik |
| Familie | Process / pipeline | Process / pipeline |
| Oprindelsesår≠ | 1988 | 1895 |
| Ophavsperson≠ | Gianluigi Zanetti | Osborne Reynolds |
| Type≠ | Kinetic theory-based simulation method | Computational turbulence modeling approach |
| Oprindelig kilde≠ | McNamara, G. R., & Zanetti, G. (1988). Use of the Boltzmann equation to simulate lattice-gas automata. Physical Review Letters, 61(20), 2332-2335. DOI ↗ | Reynolds, O. (1895). On the dynamical theory of incompressible viscous fluids and the determination of the criterion. Philosophical Transactions of the Royal Society A, 186, 123-164. DOI ↗ |
| Aliasser | LBM, lattice gas automata | RANS, Reynolds-averaged flow simulation |
| Relaterede | 5 | 5 |
| Resumé≠ | The Lattice Boltzmann Method (LBM) is a kinetic theory-based computational approach to fluid dynamics that discretizes the Boltzmann equation on a lattice grid. Developed by McNamara and Zanetti in 1988, LBM computes fluid behavior by tracking the distribution of particle velocities at discrete lattice nodes rather than solving the Navier-Stokes equations directly. This method naturally incorporates complex physics (turbulence, multiphase flows, porous media) and is highly parallelizable, making it increasingly popular for modern computational platforms. | The Reynolds-Averaged Navier-Stokes (RANS) equations represent a time-averaged form of the Navier-Stokes equations developed by Osborne Reynolds in 1895. This approach decomposes turbulent flow into mean and fluctuating components, enabling practical simulation of turbulent flows by modeling turbulent stresses rather than resolving all scales. RANS remains the most widely used computational fluid dynamics method in engineering applications due to its computational efficiency. |
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