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P.V. Panel wind load effects

P.V. Panel wind load effects. Design Review #2. December 2010. Arman Hemmati , Brady Zaiser , Chaneel Park, Jeff Symons, Katie Olver. Overview. Refresh Wind-Tunnel Preliminary Model CAD Models Measurement Methods CFD Progress What’s Next. Refresh – Where were we?.

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P.V. Panel wind load effects

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  1. P.V. Panel wind load effects Design Review #2 December 2010 Arman Hemmati , Brady Zaiser, Chaneel Park, Jeff Symons, Katie Olver

  2. Overview • Refresh • Wind-Tunnel • Preliminary Model • CAD Models • Measurement Methods • CFD Progress • What’s Next

  3. Refresh – Where were we? • Ideal angle of inclination is 51° • Too much weight for the roof? • Wind-Tunnel testing – Experimental • Computational Fluid Dynamics (CFD) - Computational

  4. Wind Tunnel – Spec. & Set-backs • Wind tunnel dimensions: Target area = 20% (total area) • Set-Backs: • Unsure about the state of the Wind Tunnel – Speculations say it is functional now! • Wind Speed – Hard to obtain (Repeatability Issue) • Availability of the Tunnel – Time conflict with other groups 20% 76.2 cm 137.2 cm

  5. Preliminary Model – Design • 4-Leg Spider Model • Non-Repeatable & High errors • Complex MDoF Model Adapted for Final Concept

  6. Preliminary Model – Design • Screw-Bolt MDoF Model • Basic Hinge Model Simple/Cheap/ Repeatable | Poor

  7. CAD Models – SolidWorks • Screw-Bolt Multi-DoF Model created in SolidWorks

  8. Measurement Methods • Drag-Plate / Load Cells: • One directional force measurement • Only measures at a specific location • Pressure Taps: • Informed it is hard to set-up • Easy data acquisition / problematic analysis • Good Accuracy • ATI 6-Axis Force Transducer: • Budget Constrains: Delivery time / COST • Highly Accurate | Problematic Calibration

  9. CFD Progress – 2D Modeling • COMSOL Model: • Geometry – full size panel & 2D • Simple Physics – Laminar flow to begin • Complex system – Turbulent / Time-dependent • Boundary Layer Issues – Top/Bottom/Outlet • Convergence Issues

  10. What’s Next – Where are we going? • Building the Experimental Model • Planning the Wind-Tunnel Schedule • Familiarizing with the Acquisition programs (Labview) • Proceeding with the CFD Models

  11. www.ucalgary.ca/deloprec

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