So sánh phương pháp
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| Mô phỏng xoáy lớn× | Phương pháp Lưới Boltzmann× | |
|---|---|---|
| Lĩnh vực | Động lực học chất lưu | Động lực học chất lưu |
| Họ | Process / pipeline | Process / pipeline |
| Năm ra đời≠ | 1963 | 1988 |
| Người khởi xướng≠ | Joseph Smagorinsky | Gianluigi Zanetti |
| Loại≠ | Scale-resolving turbulence simulation | Kinetic theory-based simulation method |
| Công trình gốc≠ | Smagorinsky, J. (1963). General circulation experiments with the primitive equations: I. The basic experiment. Monthly Weather Review, 91(3), 99-164. DOI ↗ | McNamara, G. R., & Zanetti, G. (1988). Use of the Boltzmann equation to simulate lattice-gas automata. Physical Review Letters, 61(20), 2332-2335. DOI ↗ |
| Tên gọi khác | LES, subgrid-scale modeling | LBM, lattice gas automata |
| Liên quan | 5 | 5 |
| Tóm tắt≠ | 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. | 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. |
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