Simulation of three-dimensional turbulent flow by a parallel algorithm, lattice Boltzmann method
- Los Alamos National Lab., NM (United States)
- Kansas State Univ., Manhattan, KS (United States). Dept. of Mechanical Engineering
This paper further develops the parallel algorithm, lattice Boltzmann (LB) model for simulation of transport phenomena. The lattice Boltzmann model is based on concepts that lay between the molecular and continuum extremes and is capable of drawing information and producing phenomena from both scales. Transport processes are simulated on a lattice array of nodes or points of local interaction, making natural parallel computations. Three-dimensional laminar and turbulent flow in a cavity driven by a moving wall are simulated. The model and computer simulation correctly predicts the unsteady Taylor-Goertler-Like (TGL) e vortices and corner vortices observed in experiments for mediate Reynolds numbers. Quantitative comparisons are made to those from a 2-D simulation and a 3-D experiment. The excellent agreement between the LB method and experimental work shows that the LB method has great potential for solving complex, unsteady 3-D flow. The subgrid turbulent model is introduced on the lattice Boltzmann framework and applied to 3-D cavity flow. Detailed information-rich results are obtained over a range of the Reynolds number.
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
- OSTI ID:
- 435674
- Report Number(s):
- CONF-951135--; ISBN 0-7918-1751-2
- Country of Publication:
- United States
- Language:
- English
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