Fluid-Structure Interaction Presented By: Paul E. Slaboch Advisor: Dr. Scott C. Morris November 11, 2005 First Annual FlowPAC Industry Partner Meeting.

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Presentation transcript:

Fluid-Structure Interaction Presented By: Paul E. Slaboch Advisor: Dr. Scott C. Morris November 11, 2005 First Annual FlowPAC Industry Partner Meeting

November 11, ST ANNUAL FlowPAC INDUSTRY PARTNER MEETING Overview Introduction Facilities Instrumentation Current Activities Conclusions

November 11, ST ANNUAL FlowPAC INDUSTRY PARTNER MEETING Introduction Fluid structure interaction is seen in many types of applications.  Automotive  Marine  Aerospace Problems  High cycle fatigue  Noise generation

November 11, ST ANNUAL FlowPAC INDUSTRY PARTNER MEETING Facilities Anechoic Chamber with wind tunnel (AWT) Subsonic and supersonic wind tunnels Atmospheric wind tunnel Planar Jet facility

November 11, ST ANNUAL FlowPAC INDUSTRY PARTNER MEETING 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

November 11, ST ANNUAL FlowPAC INDUSTRY PARTNER MEETING Instrumentation 2 arrays of 40 microphones each 3-D Digital Particle Image Velocimetry (PIV) Single point Laser Doppler Vibrometer (LDV) Scanning LDV (SLDV)

November 11, ST ANNUAL FlowPAC INDUSTRY PARTNER MEETING 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

November 11, ST ANNUAL FlowPAC INDUSTRY PARTNER MEETING Instrumentation 2 arrays of 40 microphones each 3-D Digital Particle Image Velocimetry (PIV) Single point Laser Doppler Vibrometer (LDV) Scanning LDV (SLDV)

November 11, ST ANNUAL FlowPAC INDUSTRY PARTNER MEETING 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

November 11, ST ANNUAL FlowPAC INDUSTRY PARTNER MEETING 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.

November 11, ST ANNUAL FlowPAC INDUSTRY PARTNER MEETING Current Activities Sound Radiation From A Submersed Elastic Duct in Nonuniform Flow

November 11, ST ANNUAL FlowPAC INDUSTRY PARTNER MEETING 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

November 11, ST ANNUAL FlowPAC INDUSTRY PARTNER MEETING Thank You Questions?