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Summary of the Fourth AIAA CFD Drag Prediction WorkshopResults from the Fourth AIAA Drag Prediction Workshop (DPW-IV) are summarized. The workshop focused on the prediction of both absolute and differential drag levels for wing-body and wing-body-horizontal-tail configurations that are representative of transonic transport air- craft. Numerical calculations are performed using industry-relevant test cases that include lift- specific flight conditions, trimmed drag polars, downwash variations, dragrises and Reynolds- number effects. Drag, lift and pitching moment predictions from numerous Reynolds-Averaged Navier-Stokes computational fluid dynamics methods are presented. Solutions are performed on structured, unstructured and hybrid grid systems. The structured-grid sets include point- matched multi-block meshes and over-set grid systems. The unstructured and hybrid grid sets are comprised of tetrahedral, pyramid, prismatic, and hexahedral elements. Effort is made to provide a high-quality and parametrically consistent family of grids for each grid type about each configuration under study. The wing-body-horizontal families are comprised of a coarse, medium and fine grid; an optional extra-fine grid augments several of the grid families. These mesh sequences are utilized to determine asymptotic grid-convergence characteristics of the solution sets, and to estimate grid-converged absolute drag levels of the wing-body-horizontal configuration using Richardson extrapolation.
Document ID
20100025833
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Vassberg, John C. (Boeing Co. Huntington Beach, CA, United States)
Tinoco, Edward N. (Boeing Co. Huntington Beach, CA, United States)
Mani, Mori (Boeing Co. Huntington Beach, CA, United States)
Rider, Ben (Boeing Co. Huntington Beach, CA, United States)
Zickuhr, Tom (Cessna Aircraft Co. Wichita, KS, United States)
Levy, David W. (Cessna Aircraft Co. Wichita, KS, United States)
Brodersen, Olaf P. (Deutsches Zentrum fuer Luft- und Raumfahrt e.V. Braunschweig, Germany)
Eisfeld, Bernhard (Deutsches Zentrum fuer Luft- und Raumfahrt e.V. Braunschweig, Germany)
Crippa, Simone (Deutsches Zentrum fuer Luft- und Raumfahrt e.V. Braunschweig, Germany)
Wahls, Richard A. (NASA Langley Research Center Hampton, VA, United States)
Morrison, Joseph H. (NASA Langley Research Center Hampton, VA, United States)
Mavriplis, Dimitri J. (Wyoming Univ. Laramie, WY, United States)
Murayama, Mitcuhiro (Japan Aerospace Exploration Agency Chofu, Japan)
Date Acquired
August 24, 2013
Publication Date
June 26, 2010
Subject Category
Aerodynamics
Report/Patent Number
AIAA Paper 2010-4547
NF1676L-10988
Meeting Information
Meeting: 28th AIAA Applied Aerodynamics Conference
Location: Chicago, IL
Country: United States
Start Date: June 28, 2010
End Date: July 1, 2010
Sponsors: American Inst. of Aeronautics and Astronautics
Distribution Limits
Public
Copyright
Public Use Permitted.

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