Multiscale Space-Time Methods for Fluid-Structure Interaction Analysis with Topology Change, Slip Interfaces and Thermal Effects
Abstract
We propose a new set of integrated multiscale space-time (ST) methods for FSI analysis involving the fundamental challenges of topology change in the domain slip interfaces between the subdomains, and multiscale coupling between the flow and thermal transport. The ST Variational Multiscale (ST-VMS) method we just developed will give us, in addition to a VMS turbulence model, the "ST accuracy." Like an ALE method, it will move with the fluid-solid interfaces the high-resolution meshes placed there. With a new version we are developing, we will maintain those high-resolution meshes even when there is a topology change in the domain, such as contact between solid surfaces. We are proposing the ST version of the variationally consistent slip interface methods that have recently been successful in the ALE-VMS context. With that, we will be able to handle the subdomains that contain spinning structures with the "ST accuracy." With a new ST-VMS method we are developing for coupled flow and thermal-transport equations, we will have a method that is multiscale in the way small-scale thermo-fluid behavior is represented in the computations. These new methods, especially integrated together, will enable successfully addressing the formidable computational challenges of a wide range of FSI applications.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 14, 2019
- Source ID
- W911NF1710046
Entities
People
- Tayfun Tezduyar
Organizations
- Army Contracting Command
- Rice University
- United States Army