Browse Publications Technical Papers 2019-01-1470
2019-06-05

Structural Vibration of an Elastically Supported Plate due to Excitation of a Turbulent Boundary Layer 2019-01-1470

High-Reynolds number turbulent boundary layers are an important source for inducing structural vibration. Small geometric features of a structure can generate significant turbulence that result in structural vibration. In this work we develop a new method to couple a high-fidelity fluid solver with a dynamic hybrid analytical-numerical formulation for the structure. The fluid solver uses the Large-Eddy Simulation closure for the unresolved turbulence. Specifically, a local and dynamic one-equation eddy viscosity model is employed. The fluid pressure fluctuation on the structure is mapped to the dynamic structural model. The plate where the flow excitation is applied is considered as part of a larger structure. A hybrid approach based on the Component Mode Synthesis (CMS) is used for developing the new hybrid formulation. The dynamic behavior of the plate which is excited by the flow is modeled using finite elements. However, the rest of the surrounding structure is modeled using finite elements for the static modes and an analytical solution for the dynamic modes of the CMS decomposition. The two main elements of the new work, the hybrid formulation and the process of applying the fluid load on the structural dynamic model are discussed. Validation of the new methodology is done by using test data from the literature for the vibration of a plate excited by air flow, and through comparisons between the new methodology and traditional finite element based solutions.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Synergetic 1D-3D-Coupling in Engine Development Part I: Verification of Concept

2015-01-0341

View Details

TECHNICAL PAPER

Accurate Reproduction of Wind-Tunnel Results with CFD

2011-01-0158

View Details

JOURNAL ARTICLE

Multi-Physics and CFD Analysis of an Enclosed Coaxial Carbon Nanotube Speaker for Automotive Exhaust Noise Cancellation

2019-01-1569

View Details

X