GS, Sidharth and Candler, Graham V. and Dimotakis, Paul E. (2014) Baroclinic Torque and Implications for Subgrid-Scale Modeling. In: 7th AIAA Theoretical Fluid Mechanics Conference. American Institute of Aeronautics and Astronautics , Reston, VA, Art. No. 2014-3214. ISBN 9781624102936. https://resolver.caltech.edu/CaltechAUTHORS:20190816-144342348
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Abstract
Baroclinic torque plays an important role in the dynamics of variable-density flows. Large eddy simulations using Favre-filtered resolved-scale velocities mask the explicit dependence of resolved-scale dynamics on subgrid-scale pressure-gradient-density interactions. The effect of subgrid-scale baroclinic torque on resolved scales is implicitly included in the subgrid-scale stress and subgrid-scale scalar fluxes through the resolved-scale vorticity it generates. LES closure models must therefore incorporate this effect in the computations. We explore the physics of subgrid-scale baroclinic torque within the structural framework of the Stretched-Vortex model. Fine-scale simulations of supersonic flows and direct numerical simulations of variable-density turbulence are investigated. Such flows have regions of active baroclinic torque and serve to set up flow configurations to assess the model.
Item Type: | Book Section | ||||||
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Additional Information: | © 2014 American Institute of Aeronautics and Astronautics. | ||||||
Group: | GALCIT | ||||||
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DOI: | 10.2514/6.2014-3214 | ||||||
Record Number: | CaltechAUTHORS:20190816-144342348 | ||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20190816-144342348 | ||||||
Official Citation: | Baroclinic Torque and Implications for Subgrid-Scale Modeling Sidharth GS, Graham V. Candler, and Paul Dimotakis 7th AIAA Theoretical Fluid Mechanics Conference. https://doi.org/10.2514/6.2014-3214 | ||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
ID Code: | 97986 | ||||||
Collection: | CaltechAUTHORS | ||||||
Deposited By: | George Porter | ||||||
Deposited On: | 19 Aug 2019 21:31 | ||||||
Last Modified: | 16 Nov 2021 17:35 |
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