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Acceleration of Lattice-BGK Schemes with Grid Refinement

✍ Scribed by Olga Filippova; Dieter Hänel

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
405 KB
Volume
165
Category
Article
ISSN
0021-9991

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✦ Synopsis

The LBGK method with local grid refinement has been shown to be an efficient and accurate tool for the simulation of incompressible, viscous flows over complex geometries. In the present study, further improvement of this concept is proposed, enabling the use of smaller amount of time steps on refined grids without impairing the spatial or temporal accuracy. This extension of the LBGK method has been proved by analytical and numerical investigations. The gain in computational time was found to be significant.

📜 SIMILAR VOLUMES

Grid Refinement for Lattice-BGK Models
Grid Refinement for Lattice-BGK Models
✍ Olga Filippova; Dieter Hänel 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 249 KB

Lattice-Boltzmann models, proposed at the end of the 1980s as the noise-free version of lattice-gas models, are based on gas-kinetic representation of fluid flow. Their recent modifications, the lattice BGK models, provide especially simple, effective and stable algorithms for the solution of hydrod