手法を比較
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| Large Eddy Simulation× | Volume of Fluid法× | |
|---|---|---|
| 分野 | 流体力学 | 流体力学 |
| 系統 | Process / pipeline | Process / pipeline |
| 提唱年≠ | 1963 | 1981 |
| 提唱者≠ | Joseph Smagorinsky | Cleve Hirt |
| 種類≠ | Scale-resolving turbulence simulation | Eulerian interface tracking method |
| 原典≠ | Smagorinsky, J. (1963). General circulation experiments with the primitive equations: I. The basic experiment. Monthly Weather Review, 91(3), 99-164. DOI ↗ | Hirt, C. W., & Nichols, B. D. (1981). Volume of fluid (VOF) method for the dynamics of free boundaries. Journal of Computational Physics, 39(1), 201-225. DOI ↗ |
| 別名≠ | LES, subgrid-scale modeling | VOF, VoF, volume fraction method |
| 関連 | 5 | 5 |
| 概要≠ | 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 Volume of Fluid (VOF) method is an Eulerian interface-tracking technique for multiphase flow simulations, developed by Hirt and Nichols in 1981. Instead of explicitly tracking the interface between phases, VOF advects a scalar field (the volume fraction) that represents the fractional volume of one phase in each grid cell. This approach elegantly handles topological changes (splashing, merging, breaking) without explicit interface reconstruction, making it ideal for complex multiphase flows on fixed Eulerian grids. |
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