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Non Intrusive 3D Load Calculation In Yaw Conditions. V. del Campo*, D. Ragni **, D. Micallef **, B. Akay **, J. Diez ***, C. Sim ã o Ferreira** *UPC, Polytechnic University of Catalonia ** TUDelft , Delft University of Technology ***Rutgers, The State University of New Jersey. - PowerPoint PPT Presentation
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Non Intrusive 3D Load CalculationIn Yaw Conditions
V. del Campo*, D. Ragni**, D. Micallef**, B. Akay**, J. Diez***, C. Simão Ferreira**
*UPC, Polytechnic University of Catalonia **TUDelft, Delft University of Technology ***Rutgers, The State University of New Jersey
PIV Load Calculation in Yaw 2/14 [email protected]
INDEX
1. State of the Art
2. Experimental Set Up
3. Methodology
4. Results
5. Conclusions & Future Work
PIV Load Calculation in Yaw 3/14 [email protected]
1. State of the Art
2. Experimental Set Up
3. Methodology
4. Results
5. Conclusions & Future Work
PIV Load Calculation in Yaw 4/14 [email protected]
State of the Art
PIV+ME / Loads
Noca (1997)PIV - CylinderVorticity Eq.
Unal (1997)PIV - Cylinder
Fujisawa (2005)μPIV – MicroChannelPressure Poison Eq.
Wu (2005)PIV – Bluff Body
Control Surface IntegralsKurtulus (2006)TRPIV - Cylinder
Van Oudheusden (2008)SPIV – Supersonic Airfoil
Compressible Flow & Shock Waves
Ragni (2011)SPIV - PropellerRotating Blade +
Compressible Flow
Del Campo (2012)SPIV – HAWT
Unsteady Flow
PIV Load Calculation in Yaw 5/14 [email protected]
1. State of the Art
2. Experimental Set Up
3. Methodology
4. Results
5. Conclusions & Future Work
PIV Load Calculation in Yaw 6/14 [email protected]
Experimental Set Up
Experimental ConditionsYawed Flow (30º) 6 m/sAngular Velocity 400 rpmRoom Temperature 21ºAtm. Pressure 101050 PaBlade Geometry DU-96_W180Max. Twist (tip) -15º
Particle Image Velocimetry ParametersLaser Type NdYAG (300mJ)Seeding Diethylene GlycolParticle Diameter 1m (median)Camera Resolution 4830 x 3230px2
Focal Length 180mmDiaphragm Aperture 5.6Field of View 250 x 220mm2
InterrogationWindow 32x32 (50% overlap)Spatial Resolution 1.8mm
PIV Load Calculation in Yaw 7/14 [email protected]
1. State of the Art
2. Experimental Set Up
3. Methodology
4. Results
5. Conclusions & Future Work
PIV Load Calculation in Yaw 9/14 [email protected]
1. State of the Art
2. Experimental Set Up
3. Methodology
4. Results
5. Conclusions & Future Work
PIV Load Calculation in Yaw 10/14 [email protected]
Results
Relative velocity field Pressure calculated with Bernoulli
Calculated pressure (Poisson solver)Absolute velocity field
PIV Load Calculation in Yaw 12/14 [email protected]
1. State of the Art
2. Experimental Set Up
3. Methodology
4. Results
5. Conclusions & Future Work
PIV Load Calculation in Yaw 13/14 [email protected]
Conclusions & Future Work
Feasibility of Measuring wind Loads without the need of Force Balances or Pressure Tabs.
Rotating Blade + Yaw Unsteady Formulation
Stationary Frame of Reference + Solely Surface Control Volumes
Good agreement with Panel Code Results
Consistent Pressure Field, even in Non Potential Flow regions.
Better Insight into the Rotor Aerodynamics.
Means of Comparison for Numerical Models.
Active Load Control Methods.
LIDAR
