Northern Arizona university intercollegiate athletic ...


NORTHERN ARIZONA UNIVERSITY DEPARTMENT OF MECHANICAL ENGINEERING CLEAN ENERGY RESEARCH ENERGY AND COMPUTATIONAL MODELING LAB OBJECTIVES Perform an Uncertainty Quantification in Wind Power Predictions from Meteodyn WT Use Computation Resources available at the Energy and Computational Modeling (ECM) Lab. Determine:

Numerical Uncertainty in Wind Speed Prediction Quantify Total Uncertainty in Model Results Velocity with 95% Confidence 2 BACKGROUND Simulatio n Error Modeling Error Numeric

al Error Input Error RoundOff Error Iterative Error Statistical Sampling Error

Discretizati on Error 3 SOFTWARE Geographic Information System (GIS) Used to develop the elevation file Computational Fluid Dynamics (CFD) Software Solves the Nonlinear, Steady, incompressible, isothermal Reynolds

Averaged Naiver Stokes (RANS) equations. Uses a one-equation closure model Matrix Laboratory Used for data reduction and visualization 4 LOCATION Grand Canyon

Flagsta 5 LOCATION Grand Canyon Flagsta 6 MESH

7 RICHARDSON EXTRAPOLATION 3 Systematically Refined Meshs Fine Med Intersectin g Nodes

Course 8 SYNTHESIS RESULTS Average Order of convergence = -1.33 9 SYNTHESIS RESULTS 1 0 SYNTHESIS RESULTS

11 CONCLUSION A significant difference between the theoretical and observed order of convergence Theoretical = 2 Observed= -1.33 Not in the asymptotic range Finer Mesh Iterative Error Influence Increase the number of iterations

12 ACKNOWLEDGEMENTS Dr. Tom Acker Energy and Computational Modeling (ECM) Lab Kathleen Stigmon & Dr. Nadine Barlow NAU Nasa Space Grant 13 Questions? 14

REFERENCES [1] ASME, Standard for Verification and Validation in Computational Fluid Dynamics and Heat Transfer, ASME V&V 20-2009, 2009. [2] T. S. Phillips, C. Roy, D. Tafti, W. Mason, and E. Cliff, Extrapolation-based Discretization Error and Uncertainty Estimation in Computational Fluid Dynamics, 2012. [3]

C. Roy, Review of Discretization Error Estimators in Scientific Computing, AIAA Pap., no. January, pp. 129, 2010. [4] L. F. Richardson, The Approximate Arithmetical Solution by Finite Differences of Physical Problems involving Differential Equations, with an Application to the Stresses in a Masonry Dam, Trans. R. Soc. London, vol. 210, 1910. [5] W. Oberkampf and C. Roy, Verification and Validation in Scientific Computing. New York: Cambridge University Press, 2010.

[6] P. J. Roache, Perspective: A Method for Uniform Reporting of Grid Refinement Studies, J. Fluids Eng., vol. 116, no. 405, 1994. [7] Meteodyn, Technical note -meteodyn WT. [8] D. Martindale, Distributed Wind Resource Assessment Using Meteodyn Wt, Northern Arizona University, 2016. 15

Recently Viewed Presentations

  • Nutrition & Prostate Cancer: Exploring the role of

    Nutrition & Prostate Cancer: Exploring the role of

    Dr Wendy Demark-Wahnefried, a researcher in Duke's School of Nursing and lead investigator on the study said that: "Our previous studies in animals and in humans had shown a correlation between flaxseed supplementation and slowed tumor growth, but the participants...
  • 18/1588r0 -

    18/1588r0 -

    [6] Fei Chen, Robert Morawski, Tho Le-Ngoc, "Self-Interference Channel Characterization for Wideband 2x2 MIMO Full-Duplex Transceivers using Dual-Polarized Antennas", IEEE Transactions on Antennas & Propagation, Vol. 66, No. 4, April 2018. [7] IEEE 802.11-03/940r1.
  • PowerPoint Presentation

    PowerPoint Presentation

    God's Promise for the week "You will show me the path to life, fullness of joys in your presence the delights at your right hand forever." Ps 16:11
  • Anatomy and Physiology Identify the structure of the

    Anatomy and Physiology Identify the structure of the

    Anatomy and Physiology. Identify the structure of the skeletal system. Explain. the function of the skeletal system
  • Biology Jeopardy - Grosse Pointe Public School System

    Biology Jeopardy - Grosse Pointe Public School System

    Pieces of rock are loosened, and detached from bedrock by the freezing of water in cracks…
  • Toward Independence

    Toward Independence

    Arial Calibri Kristen ITC Memorial Day - Indezine 1594 1_Memorial Day - Indezine 1594 Toward Independence Section 2: Before 1763 Conflict in the Ohio Valley Slide 4 French and Indian War Slide 6 Section 3: Proclamation of 1763 Slide 8...
  • 1.Plants and some other types of organisms are

    1.Plants and some other types of organisms are

    The diagram below represents a cell found in some complex organisms. The enlarged section represents an organelle, labeled X, found in this cell. ... (elodea) was placed in bright sunlight for five hours as indicated below. Bubbles of oxygen gas...
  • Phys100 Lecture One - University of British Columbia

    Phys100 Lecture One - University of British Columbia

    Title: Phys100 Lecture One Author: fei zhou Last modified by: fei zhou Created Date: 8/31/2007 5:38:22 PM Document presentation format: On-screen Show