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FlowPAC Acoustics Research Scott C. Morris Thomas J. Mueller
Overview Basic and applied research Mix of theoretical, computational, and experimental capabilities Experimental tools include: –Anechoic Wind Tunnel (AWT) –Phased Microphone Array –Laser vibrometry –Particle Image Velocimetry
Schematic of Rotor Wake Phenomena
Swirling Flow Phenomena
Wake Distortion by Swirl
Top View of the Acoustic Pressure of a 3D Cascade with 30 o Stagger
Experimental Approach: Acoustic Theory LES calculations Hot-wire & PIV measurements Far field signature Boundary Conditions Unsteady wall pressure
Acoustic Arrays Array Panel #1 Flow Model
Beamforming Results (Example SPL map) U ref = 69 ft/s Array #1 z = 42 in. Test section boundary Model trailing edge location Flow: L to R Inlet noise Trailing edge noise Collector noise
How well does the array work? LOW Frequency example Combined sound BF-Left BF-Right
Acoustic spectra: 3 regions Low frequency Vortex shedding Broadband
PIV Experimental Setup Trailing Edge 12-bit CCD Cameras Nd YAG Lasers Lasers Sheet Camera view areas Flow
Instantaneous Flow Field Resutls shadow area
Instantaneous vorticity contours
Phase averaged vorticity
Prediction of broadband sound
Current Projects Include: Trailing Edge Sound Ducted Propulsion Acoustics of very light fluid-structure interactions Window buffeting Effect of structural acoustics on dipole source strength
Fluid-Structure Interaction Presented By: Paul E. Slaboch Advisor: Dr. Scott C. Morris November 11, 2005 First Annual FlowPAC Industry Partner Meeting.
Sound Sources in a Ducted Rotor David B. Stephens and Scott C. Morris University of Notre Dame Aerospace and Mechanical Engineering Department.
Theory of Turbine Cascades P M V Subbarao Professor Mechanical Engineering Department Its Group Performance, What Matters.……
PIV Measurements and Computational Study around a 5-Inch Ducted Fan for VTOL UAV Ali Akturk, Akamol Shavalikul & Cengiz Camci VLRCOE (Vertical.
Influence of wall roughness on near wall turbulence structure by Haigermoser C.*, Vesely L.*, La Polla M., Onorato M., Politecnico di Torino XIV A.I.VE.LA.
Engineering Engineer -> μηχανικος Engineering ?-> μηχανικη ?? (College of Engineering -> ???) Engineers create: -design and build machines, structures.
Paper Anemometer Team Taiwan. Official Description Paper Anemometer When thin strips of paper are placed in an air flow, a noise may be heard. Investigate.
Ben Falconer. Background A bit about me Ben Falconer Came to Warwick 2006 Computer and Information engineering MEng project Project based around PIV Current.
School of Aerospace Engineering CERT Prediction of Rotorcraft Noise with A Low-Dispersion Finite Volume Scheme A Thesis Proposal Presented to The Faculty.
Week 10: Imaging Flow Around a Radio Controlled Race Car.
A Survey of Aeroacoustic Considerations in Wind Turbines Robert Scott AE 6060.
1 Numerical and Experimental Analysis of Performance and Aerodynamic Loads on HAWT Blade AeroAcoustics & Noise Control Laboratory, Seoul National University.
Flow Control over Swept Edges Demetri Telionis Dept. of Engineering Science and Mechanics.
Steps in Development of 2 D Turbine Cascades P M V Subbarao Professor Mechanical Engineering Department A Classical Method Recommended by Schlichting.……
The VAWT in Skew: Stereo-PIV and Vortex Modeling ir. C.J. Sim ã o Ferreira, M.Sc. K. Dixon, Dipl.-Ing. C. Hofemann, Prof. Dr. ir. G.J.W. van Bussel, Prof.
19 October AME Graduate Student Conference Flow Induced Oscillations of a Helmholtz Resonator Paul E. Slaboch Advisor: Scott C. Morris.
Von Karman Institute for Fluid Dynamics 1/22 Experimental and Numerical investigation of Flow and Heat Transfer in a Ribbed Square Duct. Tony
Numerical Investigation of Broadband Slat Noise Attenuation with Acoustic liner Treatment University of Southampton Southampton, UK Authors: Zhaokai Ma,
Chapter 3. Instability of the free plane and near – wall plane jet The results of researches presented in presentation are published in the following main.
Linear Motion Lift Theories. Requirements for a Valid Theory 1)A valid theory is a rational explanation of observed phenomenon 2)A valid theory.
© 2009, TSI Incorporated Stereoscopic Particle Image Velocimetry.
Computational Aeroacoustics Prof. S. H. Frankel, ME
Aerodynamic Ground Effect: a case-study of the integration of CFD and experiments Tracie Barber & Stephen Hall University of New South Wales, Sydney, Australia.
MAE513 Spring 2001 Prof. Hui Meng & Dr. David Song Dept. of Mechanical & Aerospace Engineering Advanced Diagnostics for Thermo- Fluids Laser Flow Diagnostics.
Investigation of wall-bounded turbulence over sparsely distributed roughness M. Placidi, B. Ganapathisubramani and M. Tan Faculty of Engineering and the.
Wind Tunnel Testing of a Generic Telescope Enclosure Tait S. Pottebaum Douglas G. MacMynowski* California Institute of Technology June 2004 T T M Thirty.
1 A Computational Aeroacoustics Approach to Trailing Edge Noise Prediction using the Nonlinear Disturbance Equations James P. Erwin Philip J. Morris Kenneth.
Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy’s National Nuclear.
Laser Energy Deposition for Control of Turbulent Mixing Layers Liliana Saldana University of Arizona Advisor: Dr. Jesse Little Assistant Professor, Department.
SLIDE 1 | Dantec Dynamics | 2010 Stereoscopic PIV.
Figure 1: Sonolator sketch Figure 2: Sonolator orifice David Ryan 1 2, Mark Simmons 1, Mike Baker 2 – June 2012 Cavitation in Sonolators Acknowledgements:
Masakazu Shimooka, Makoto Iida, and Chuichi Arakawa The University of Tokyo Basic Study of Winglet Effects On Aerodynamics and Aeroacoustics Using Large-Eddy.
SIROCCO, SIlant ROtors by aCoustiC Optimisation Participants: Energy Research Centre of the Netherlands, ECN (Gerard Schepers and Toine Curvers) National.
MESOSCALE OCEANIC VARIABILITY EXPERIMENT (MOVE) Shay et al. SCIENTIFIC GOAL: To observe and understand the role of mesoscale oceanic processes on littoral,
Flow Control over Sharp-Edged Wings José M. Rullán, Jason Gibbs, Pavlos Vlachos, Demetri Telionis Dept. of Engineering Science and Mechanics.
Aerodynamic research of Flapping MAV Background Flapping Micro Air Vehicles (FMAVs) as the most intriguing type of MAVs family have obtained a great interest.
Inertial Confinement Fusion Related Experimental Investigation of a Twice-Shocked Spherical Density Inhomogeneity. Nick Haehn, Chris Weber, Jason Oakley,
CHAPTER 8 CN3124E – Particle Technology. Measurement Techniques Used to Study Dynamics of Particulate Systems Electrical Capacitance Tomography (ETC)
Compressor Cascade Pressure Rise Prediction ME 491 Project Department of Mechanical Engineering, IUPUI Julia Zafian-Short December 2004.
Inlets and Nozzles: Design Considerations EGR 4347 Analysis and Design of Propulsion Systems.
Vertical Axis Wind Turbine Noise Charlie Pearson Dr. Will Graham Dr. Tam á s Bert é nyi.
Current techniques for measuring Muffler Transmission Loss.
Ben Falconer Supervisors: Peter Bryanston-Cross, Brenda Timmerman.
Aerodynamic measurement of high-speed base flows Background The separated wake at the base of cylindrical bodies presents a number of challenges to aerodynamic.
Robert S. Laramee 1 Visualization Lecture Flow visualization, An Introduction.
Particle Image Velocimetry Demo Outline (For reference) Topic NumberTopic NamePage Type 1Flow of PIVAnimated page.
Wind Modeling Studies by Dr. Xu at Tennessee State University Guanpeng Xu Tennessee State University Center of Excellence in Information System, Engineering.
An Experimental Investigation of Turbulent Boundary Layer Flow over Surface-Mounted Circular Cavities Jesse Dybenko Eric Savory Department of Mechanical.
The sources of wind noise in hearing aids By Harvey Dillon, Inge Roe, and Richard Katsch, National Acoustic Laboratories This project was kindly sponsored.
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