Fluid-Structure Interaction

Fluid-Structure Interaction

Presented By: Paul E. Slaboch

Advisor: Dr. Scott C. Morris

November 11, 2005

First Annual FlowPAC Industry Partner Meeting

November 11, 20051ST ANNUAL FlowPAC INDUSTRY PARTNER MEETING

Overview

Introduction Facilities Instrumentation Current Activities Conclusions


Introduction

Fluid structure interaction is seen in many types of applications. Automotive Marine Aerospace

Problems High cycle fatigue Noise generation


Facilities

Anechoic Chamber with wind tunnel (AWT)

Subsonic and supersonic wind tunnels

Atmospheric wind tunnel

Planar Jet facility


Instrumentation 2 arrays of 40 microphones each 3-D Digital Particle Image Velocimetry (PIV) Single point Laser Doppler Vibrometer (LDV) Scanning LDV (SLDV) Array #1

Array #2

Flow


Instrumentation 2 arrays of 40 microphones each 3-D Digital Particle Image Velocimetry (PIV) Single point Laser Doppler Vibrometer (LDV) Scanning LDV (SLDV)



t (measured)

Signal

Time


Current Activities

Turbulent Boundary Layer Interactions with elastic end wall Hydrodynamic pressures

force vibrations in end wall.

Scanning LDV used to record vibrational pattern of endwall


Current Activities Add Airfoil Tip to

turbulent boundary layer. Complicated system of

coupled hydrodynamic and acoustic pressures.

Use unsteady force transducers with scanning and single point LDV to correlate unsteady force with vibrational pattern of endwall.


Current Activities Sound Radiation From A Submersed Elastic Duct in Nonuniform Flow


Summary Fluid structure interactions significantly impact

design considerations. Instrumentation

2 arrays of 40 microphones each 3-D Digital PIV Single Point and Scanning LDV

Facilities AWT, sub- and supersonic tunnels, planar jet


Thank You

Questions?

Fluid-Structure Interaction

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