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| طريقة بولتزمان الشبكية× | محاكاة الدوامات الكبيرة (Large Eddy Simulation - LES)× | |
|---|---|---|
| المجال | ديناميكا الموائع | ديناميكا الموائع |
| العائلة | Process / pipeline | Process / pipeline |
| سنة النشأة≠ | 1988 | 1963 |
| صاحب الطريقة≠ | Gianluigi Zanetti | Joseph Smagorinsky |
| النوع≠ | Kinetic theory-based simulation method | Scale-resolving turbulence simulation |
| المصدر التأسيسي≠ | McNamara, G. R., & Zanetti, G. (1988). Use of the Boltzmann equation to simulate lattice-gas automata. Physical Review Letters, 61(20), 2332-2335. DOI ↗ | Smagorinsky, J. (1963). General circulation experiments with the primitive equations: I. The basic experiment. Monthly Weather Review, 91(3), 99-164. DOI ↗ |
| الأسماء البديلة | LBM, lattice gas automata | LES, subgrid-scale modeling |
| ذات صلة | 5 | 5 |
| الملخص≠ | 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. | Large Eddy Simulation (LES) is a turbulence modeling technique that explicitly resolves large-scale turbulent eddies while modeling small-scale subgrid-scale (SGS) motions. Introduced by Joseph Smagorinsky in 1963, LES represents a middle ground between Reynolds-Averaged Navier-Stokes (RANS) and Direct Numerical Simulation (DNS). By capturing the energy-containing scales of turbulence, LES provides superior accuracy for transient flows and complex geometries at computational costs significantly lower than DNS. |
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