Structural Forcing from Non-Linear Turbulent Interactions with a Compliant Surface
Abstract
This proposal describes a new research program for the study of interactions between a turbulent boundary layer and a compliant surface layer. This configuration can result in a highly non-linear interaction between the stochastic driving pressure from the turbulence and the motion of the surface. When the surface motion is large enough, the Reynolds stress field will be significantly modified resulting in a fully coupled fluid-structural interaction. The prediction of structural vibration and the resulting radiated acoustic field requires knowledge of the low wave-numbers of the unsteady surface pressure. This is because it is the lowest wave-numbers (i.e., larger length scales) that often match the acceptance of the structure to unsteady forcing. In this work, we will focus on the entire range of wave-numbers of the pressure field in order to understand the coupled physics as well as the forcing functions that cause vibration of the structure.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 07, 2019
- Source ID
- N000141912058
Entities
People
- Scott Morris
Organizations
- Office of Naval Research
- United States Navy
- University of Notre Dame