Year: 2021
Type: article
Abstract: We extend the bridging Partially-Averaged Navier-Stokes (PANS) equations model to variable-density flow and develop a scale-dependent closure for complex flows. This includes $a$ $p\phantom{\rule{0}{0ex}}r\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}o\phantom{\rule{0}{0ex}}r\phantom{\rule{0}{0ex}}i$ testing to develop guidelines for the efficient selection of parameters controlling the model resolution (range of resolved scales). Accuracy of the model is evaluated with simulations of two benchmark transitional problems: the Taylor-Green Vortex and Rayleigh-Taylor flow. The results show that the model can accurately and efficiently predict the selected flows while resolving only a fraction of the turbulence field.
Source: Physical Review Fluids
Authors: F. S. Pereira, F. F. Grinstein, D. M. Israel, R. Rauenzahn, S. S. Girimaji
Institutions: Los Alamos National Laboratory, Texas A&M University
Language: English
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W3131791687