Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session X43: Turbulence: Modeling III
8:00 AM–10:10 AM,
Tuesday, November 21, 2023
Room: 207B
Chair: Scott Salesky, University of Oklahoma
Abstract: X43.00002 : Error analysis of SES, a mixed-dynamics model to capture all turbulent scales*
8:13 AM–8:26 AM
Presenter:
Shilpa Sajeev
(Texas A&M University)
Authors:
Shilpa Sajeev
(Texas A&M University)
Diego A Donzis
(Texas A&M University)
We study this mixed-dynamics approach in model PDEs and show how error changes with time-step size, percentage of resolved modes and equation parameters. The analytical analysis offers insight into how probability affects results and, thus, how to choose a probability distribution for a particular flow configuration and condition. Since each model differential equation represents a process in real turbulent flows, our study sheds light on the effect of this mixed-dynamics approach on individual turbulent processes. Analytical results are compared with numerical results.
*Supported by National Science Foundation (Grant No. 2040114) and Advanced Cyberinfrastructure Coordination Ecosystem: Services & Support (ACCESS)
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