Issue |
ESAIM: Proc.
Volume 1, 1996
Vortex flows an related numerical methods II
|
|
---|---|---|
Page(s) | 49 - 64 | |
DOI | https://doi.org/10.1051/proc:1996019 | |
Published online | 15 August 2002 |
Towards lagrangian large vortex simulation
Department of Mechanical Engineering The Johns Hopkins University Baltimore, MD 21218, USA
Construction of a Lagrangian large-eddy-simulation scheme is performed based on filtering the vorticity transport equation and using simple eddy-diffusivity models to account for subgrid-scale "Helmholtz" stresses. The resulting governing equations are simulated using a three-dimensional particle method which discretizes the vorticity field into Lagrangian vortex elements of finite overlapping cores. Vortex elements are transported along particle trajectories, while their vorticities evolve according to stretching and tilting by the resolved scales, molecular diffusion, and subgrid-scale stresses. The behavior of the model is discussed in light of limited three-dimensional computations of transitional vortex rings. It is shown that the model can capture the large-scale features of the flow without requiring an excessively large number of elements.
© EDP Sciences, ESAIM, 1996
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.